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Do physical activity and screen time mediate the association between European fathers’ and their children’s weight status? Cross-sectional data from the Feel4Diabetes-study

Abstract

Background

Most research on parenting and childhood obesity and obesity-related behaviours has focused on mothers while fathers have been underrepresented. Yet, recent literature has suggested that fathers uniquely influence their children’s lifestyle behaviours, and hence could also affect their weight status, but this has not yet been scientifically proven. Therefore, the present study aimed to determine whether the association between fathers’ weight status and their children’s weight status is mediated by fathers’ and children’s movement behaviours (i.e. physical activity (PA) and screen time (ST)).

Methods

Cross-sectional data of 899 European fathers and their children were analyzed. Fathers/male caregivers (mean age = 43.79 ± 5.92 years, mean BMI = 27.08 ± 3.95) completed a questionnaire assessing their own and their children’s (mean age = 8.19 ± 0.99 years, 50.90% boys, mean BMIzscore = 0.44 ± 1.07) movement behaviours. Body Mass Index (BMI, in kg/m2) was calculated based on self-reported (fathers) and objectively measured (children) height and weight. For children, BMI z-scores (SD scores) were calculated to obtain an optimal measure for their weight status. Serial mediation analyses were performed using IBM SPSS 25.0 Statistics for Windows to test whether the association between fathers’ BMI and children’s BMI is mediated by fathers’ PA and children’s PA (model 1) and fathers’ ST and children’s ST (model 2), respectively.

Results

The present study showed a (partial) mediation effect of fathers’ PA and children’s PA (but not father’s ST and children’s ST) on the association between fathers’ BMI and children’s BMI (model for PA; coefficient: 0.001, 95% CI: [0.0001, 0.002]; model for ST; coefficient: 0.001, 95% CI: [0.000, 0.002]). Furthermore, fathers’ movement behaviours (PA and ST) were positively associated with their children’s movement behaviours (PA and ST) (model for PA, coefficient: 0.281, SE: 0.023, p < 0.001; model for ST, coefficient: 0.345, SE: 0.025, p < 0.001).

Conclusions

These findings indicate that the influence of fathers on their children’s weight status partially occurs through the association between fathers’ PA and children’s PA (but not their ST). As such, intervening by focusing on PA of fathers but preferably of both members of the father-child dyad (e.g. engaging fathers and their children in co-PA) might be a novel and potentially effective strategy for interventions aiming to prevent childhood overweight and obesity. Longitudinal studies or intervention studies confirming these findings are however warranted to make meaningful recommendations for health intervention and policy.

Trial registration

The Feel4Diabetes-study is registered with the clinical trials registry http://clinicaltrials.gov, ID: 643708.

Background

Childhood overweight and obesity are currently one of the most serious public health concerns as they consistently have been associated with a wide range of negative biological, psychological, and social health consequences [1]. Along with dietary intake, two important behaviours play an important role in the development of overweight and obesity are physical activity (PA) and sedentary behaviour (SB), of which screen time (ST) (e.g. TV viewing and computer use) is the most common form [2]. Unhealthy patterns of these so-called “movement behaviours” [3] can be found in many European primary school-aged children. Recent evidence has for example shown that 4.6 to 16.8% of European primary school-aged children (10–12 years old) does not meet the international recommendation of at least 60 min of moderate-to-vigorous PA per day, and 19.0 to 31.7% (weekdays) and 57.4 to 71.2% (weekend days) of the European primary school-aged children (6–9 years old) exceeds the internationally recommended guideline [3,4,5] of no more than 2 h recreational ST per day [6]. The establishment of healthy patterns of PA and SB (including ST) during childhood is however important, as they tend to track into adolescence and adulthood [7,8,9]. As such, targeting these movement behaviours at a young age has become an important focus in health promotion and obesity prevention research [10, 11].

This can be framed within the socio-ecological model of health behaviour, which is a model often used in health research offering a broad perspective on health behaviours, integrating multiple hierarchically-nested levels of influence. According to this theoretical model, influences from the interpersonal level –which is the closest to the child and contains the structures with which the child has direct contact, such as family, school, neighborhood, or childcare environments- are the strongest and have the greatest impact on the child [12, 13]. Within this interpersonal level, it has been widely stated in the literature that parents play a key role in establishing positive health behaviours in their children [14, 15]. However, a large drawback of this assumption is that most of the studies included only mothers, while fathers have been largely underrepresented [16,17,18]. More specifically, there is a paucity of research on the (specific) impact of fathers on their children’s health behaviours [19]. In a systematic review identifying the inclusion of fathers as research participants in observational studies investigating parental influences on childhood obesity or obesity-related behaviours, it was found that fathers represented only 17% of parents across the 667 eligible studies, 48% of which included no fathers at all [17]. Overall, only 10% of the studies reported father-specific data and only 1% of the studies included only fathers. This is a major evidence gap, as overlooking the (unique) contribution of fathers has reduced our understanding of factors contributing to childhood obesity and hindered the development of effective family-based intervention programs [16]. Moreover, recent research has indicated that the influence of fathers may be important for predicting childhood obesity [20, 21]. Several longitudinal studies have for example shown that weight status of the father is a significant and important predictor of their children’s weight status [20, 21]. Furthermore, some recent studies also showed a positive association between movement behaviours of the father (i.e. PA and SB) and those of their children, which was independent from the mother [22,23,24,25,26,27,28,29,30,31,32]. However, studies examining PA associations are still limited [33]. For SB, the existing evidence is even more scarce and research findings are inconclusive [25, 33, 34].

Most importantly, no studies investigated the interrelationships between fathers’ and children’s weight status and their movement behaviours (i.e. PA and ST). This is important to understand the potential pathways between father and child weight status and it might provide novel intervention modality in the fight against childhood obesity. Therefore, this study aimed to determine whether the association between fathers’ and children’s weight status is mediated by respectively fathers’ and children’s movement behaviours (i.e. PA and ST). We hypothesize that this will indeed be the case, and if so, lifestyle interventions could focus on the father’s movement behaviours in order to prevent childhood obesity, in addition to children’s and mothers’ behaviours. Last, a major shortcoming in research on this topic is that most studies on this topic are national studies (e.g. conducted in Australia, Canada, USA, UK and Portugal), predominantly coming from high-income countries [35]. Given the different occupational and socio-cultural structures, environmental factors (e.g. safety, climate), etc. in middle- to low-income countries, evidence from these countries is needed too [36]. The current study addresses these shortcomings by investigating data from six European countries, representing different socio-economic levels. Additionally, examining large-scale international data also increases the generalizability of the results and allows an examination of associations regardless of the specific characteristics of a country.

Methods

Study background and data collection

This study performed secondary data analysis on cross-sectional data from the “Feel4Diabetes-study”, which was conducted in six European countries representing low income countries (Bulgaria and Hungary), high income countries (Belgium and Finland) and countries under austerity measures (Greece and Spain). Recruitment was conducted within the provinces of Oost-Vlaanderen and West-Vlaanderen (Belgium), Varna and Sofia (Bulgaria), Satakunta (Finland), Attica (Greece), Debrecen and its county (Hungary) and Zaragoza (Spain). In Bulgaria and Hungary, all areas within the selected provinces were eligible to participate in Feel4Diabetes. In Greece, Spain, Finland and Belgium, the municipalities, school districts or other equivalent units in the selected provinces were grouped in tertiles according to socio-economic indices retrieved from official resources and authorities areas were randomly selected only from the tertile with the lowest education level or the highest unemployment rate. In the case of Finland, areas were ordered based on the mean values of the selected socioeconomic index and areas were selected from the lower mean. In all countries, after taking the necessary approval(s) from local authorities (ethical committees, ministries, municipalities, etc.), lists of all primary schools within the randomly selected areas were created and primary schools were randomly selected and recruited within each area. Thereafter, children attending the first three grades of compulsory education and their families were then recruited within these schools to participate in the study. More specifically, children received an information letter to take home for their families, in which parents were briefly informed about the purpose of the study. By signing a written informed consent, parents gave permission to participate in the study. All parents/primary caregivers who agreed to participate were then asked to complete a questionnaire, and researchers visited the schools again to objectively measure the weight and height of the participating children (i.e. see the measures section for more information on how this was obtained). More details about this research, data collection and design can be found elsewhere (www.feel4diabetes-study.eu) [37].

Measures

Within the Feel4Diabetes-study, a questionnaire was developed to be completed (at home) by one of the parents/primary caregivers, who completed this questionnaire both for him/herself and their child. For the present study, only relevant socio-demographics (i.e. fathers’ age, fathers’ education level, and children’s age and sex) and measures on movement behaviours collected with this questionnaire (i.e. PA and ST) were used.

Physical activity

Fathers’ and children’s PA were assessed in two questions, i.e. “In the previous week, how many days were you/was your child active for at least 30 min/day (parent)/ 60 min/day (child) (a) on weekdays, and (b) on weekend days? With ‘active’ we mean any kind of movement that makes you sweat a little and increases your heart rate, for example cycling, dancing, gardening, fitness, etc.”. For weekdays, possible answer options varied on a 6-point scale ranging from “none” to “5 days”. For weekend days, possible answer options varied on a 3-point scale ranging from “none” to “2 days”. These categorical values were then recoded into continuous variables (i.e. none was recoded into 0, 1 day was recoded into 1, etc.). The sum of these two variables was used in the analyses as a measure of the fathers’ and children’s amount of PA, reflecting the number of days fathers/children reached the PA guideline.

Screen time

Fathers’ and children’s ST were also assessed in two questions, i.e. “How many hours per day do you/does your child spend on screen activities (activities at work/school not included) on (a) weekdays, and (b) on weekend days”. Answer options varied on a 10-point scale, ranging from “none” to “7 or more hours/day”, with a 1 hour range in other options e.g. “2 to less than 3 hours/day”. These categorical variables were recoded into continuous variables using the midpoint method (e.g. “2 to less than 3 h/day” was recoded into 150 min/day, “3 to less than 4 h/day was recoded into 210 min/day) [38], and the average daily amount of the parents’ and children’s ST (min/day) was then calculated using the following formula: ((STweekdays*5) + (STweekenddays*2))/7.

The test-retest reliability of the PA and ST measures was ranked as ‘moderate’ to ‘excellent’ (ICC range = 0.57 to 0.83), except for children’s PA on weekend days and fathers’ ST on weekdays, which was ranked as ‘poor’ (ICC = 0.37 and ICC = 0.33, respectively).

Body mass index

Both mothers’ and fathers’ Body Mass Index (BMI, in kg/m2) was calculated based on their self-reported weight and height, and children’s BMI was calculated based on their objectively weight and height. More specifically, children were measured at schools by a team of researchers. Height was measured using the Seca 2017 stadiometer for mobile height measurement, and weight was measured using the Seca 813 digital flat scale. For the analyses, BMI z-scores were calculated for the children to obtain an optimal measure for their weight status, relative to their age and sex.

Education level

Education level of the father was questioned to have a proxy measure of socio-economic status of the family [39]. This was asked in a 5-point Likert-type scale question, ranging from “less than 7 years” to “more than 16 years” of education.

Data analysis

Data of 899 father-child dyads (i.e. combination of a father/male caregiver with (one) primary school-aged child) were included in the present study. Inclusion criteria were having complete data on the (outcome) variables for both the father and the child and the child’s age between 5 and 13 years old (i.e. primary school age). In total, 325 cases were excluded for not meeting these inclusion criteria, see Fig. 1 for a more detailed description. Descriptive statistics were computed to describe the sample characteristics, using IBM SPSS Statistics for Windows, version 25.0 [40]. As recommended by Baron and Kenny [41] the following assumptions must be fulfilled to establish a mediation effect: i) the predictor and outcome variable need to be significantly correlated, ii) mediators need to be significantly correlated with both the predictor and outcome variable in order to include them in the model. To check these assumptions, Pearson correlation analysis was performed using IBM SPSS Statistics for Windows, version 25.0 [40] between all the proposed mediators (i.e. PA of the father, PA of the child, ST of the father and ST of the child), the predictor (BMI of the father) and the outcome variable (BMI of the child). Using model 6 (i.e. serial mediation model with two mediators) of an SPSS macro provided by Preacher and Hayes (2008) [42], two serial mediation analyses with two mediators each (M1 and M2; see Fig. 2 for a graphical representation) were performed to investigate whether the association between BMI of the father and BMI of the child is mediated by respectively PA of the father and PA of the child (model 1) and by respectively ST of the father and ST of the child (model 2). A mediation effect occurs when the (direct) effect of BMI of the father on BMI of the child is eliminated (complete mediation) or reduced (partial mediation) when controlled for the mediators (M1 and M2). As represented in Fig. 2, ten effects can be estimated in each model [1]; the total effect (c-path), representing the effect of BMI of the father on BMI of the child, [2] the direct effect (c’-path), representing the direct effect of BMI of the father on BMI of the child, [3] five ‘intermediate’ effects; the effect of BMI of the father on M1 (PA or ST of the father) (a1-path), the effect of BMI of the father on M2 (PA or ST of the child) (a2-path), the effect of M1 (PA or ST of the father) on M2 (PA or ST of the child) (a3-path), the effect of M1 (PA or ST of the child) on BMI of the child (b1-path) and the effect of M2 (PA or ST of the child) on BMI of the child (b2-path), and [4] three indirect effects. The total effect (c-path) of BMI of the father on BMI of the child was quantified as the sum of the direct effect (c’-path) and the indirect effects. Three indirect effects of BMI of the father on BMI of the child could be estimated; one through M1 (path a1xb1), one through M2 (path a2xb2), and one through both M1 and M2 (path M1&M2, quantified as the subtraction of the direct effect (c’) and indirect effects via (only) M1 and (only) M2 from the total effect (c) (i.e. c-[c’ + (a1xb1) + (a2xb2)]). To test the mediation effect, 5000 bootstrapped resamples and a 95% confidence interval (CI) were applied to construct the indirect paths. Bias-corrected CI that did not include 0 were considered significant. As an effect size, the completely standardized indirect effect size (effect sizecz) was calculated, indicating that the outcome variable (BMI of the child) is expected to decrease by the magnitude of effect size standard deviations for every standard deviation increase in the predictor (BMI of the father) indirectly through the mediators M1 and M2. An effect sizecz of 0.01 was considered as small, 0.09 as moderate and 0.25 as strong [43]. Fathers’ and children’s age, children’s sex and BMI of the mother were included as covariates in the mediation model to control for their potential confounding effect.

Fig. 1
figure 1

Flow diagram of participants throughout the study

Fig. 2
figure 2

The serial mediation models. Each model with two mediators (M1 and M2) in each model; PA of the father and PA the child in model 1, and ST of the father and ST of the child in model 2. Path a1 represents the effect of BMI of the father on M1, path a2 represents the effect of BMI of the father on M2, path a3 represents the effect of M1 on M2. Path b1 and path b2 represent the effect of respectively M1 and M2 on BMI of the child. Path c represents the total effect of BMI of the father on BMI of the child, and path c’ is the direct effect of BMI of the father on BMI of the child

Fig. 3
figure 3

Model 1 of the serial mediation analysis. The association between BMI of the father and BMI of the child through respectively PA of the father (M1) and PA of the child (M2), with each pathway in the serial mediation model. Each arrow with a solid line represents a significant path between variables, an arrow with a dashed line represents a non-significant path. The estimated coefficients are unstandardized. Note. *p-value is significant at the 0.05 level, **p-value is significant at the 0.01 level, ***p-value is significant at the 0.001 level, NSnon-significant p-value

Fig. 4
figure 4

Model 2 of the serial mediation analyses. The association between BMI of the father and BMI of the child through respectively ST of the father (M1) and ST of the child (M2), with each pathway in the serial mediation model. Each arrow with a solid line represents a significant path between variables, an arrow with a dashed line represents a non-significant path. The estimated coefficients are unstandardized. Note. *p-value is significant at the 0.05 level, **p-value is significant at the 0.01 level, ***p-value is significant at the 0.001 level, NSnon-significant p-value

Results

Descriptives statistics

In total, data of 899 father-child dyads were analyzed (mean age fathers/male caregivers: 43.79 ± 5.92 years, mean age primary school aged children: 8.19 ± 0.99 years; 50.90% boys). The flow diagram of participants throughout the study can be found in Fig. 1. Descriptive statistics of the sample and variables can be found in Table 1.

Table 1 Descriptive statistics

Correlation analysis

The bivariate correlation analysis showed a significant correlation between the predictor (BMI of the father) and outcome variable (BMI of the child), which was required for testing a mediational effect. Furthermore, all the mediators (i.e. PA of the father, PA of the child, ST of the father and ST of the child) were significantly correlated with both the predictor (BMI of the father) and outcome variable (BMI of the child), and could therefore be included in the mediation models. Last, all proposed covariates were significantly correlated with (one of) the outcome variables, justifying its inclusion in the mediation models. The bivariate correlation analysis results can be found in Table 2.

Table 2 Bivariate correlations among fathers’ and children’s PA, ST and BMI
Table 3 Multiple mediation effects through PA (model 1) and ST (model 2) of the father and the child in the association between BMI of the father and BMI of the child

Mediation analysis

Fig. 3 (PA, model 1) and Fig. 4 (ST, model 2) show the association between BMI of the father and BMI of the child, with each pathway in the multiple mediation model. For a detailed description of the results, see Table 3.

Total effect and direct effect

The mediation analysis showed a significant total effect (c-path) of BMI of the father on BMI of the child in both models (model 1 (PA), coefficient: 0.071, SE: 0.009, p < 0.001; model 2 (ST), coefficient: 0.069, SE: 0.009, p < 0.001), indicating that a higher BMI of the father was associated with a higher BMI of the child. Moreover, this effect reduced but remained significant after controlling for the mediators (M1 and M2) in both models (c’, direct effect; model 1 (PA), coefficient: 0.070, SE: 0.009, p < 0.001; model 2 (ST), coefficient: 0.068, SE: 0.009, p < 0.001), which indicates a partial mediation effect of the mediator(s) on the association between BMI of the father and BMI of the child.

Intermediate effects

The effects of BMI of the father on M1 (PA/ST of the father) were both significant (a1-path; model 1 (PA); coefficient: -0.059, SE: 0.019, p = 0.002; model 2 (ST); coefficient: 2.238, SE:0.725, p = 0.002), indicating that a higher BMI of the father was associated with less PA and more ST of the father. Also the effects of M1 (PA/ST of the father) on M2 (PA/ST of the child) were both significant (a3-path; model 1 (PA); coefficient: 0.281, SE: 0.023, p < 0.001; model 2 (ST); coefficient: 0.345, SE: 0.025, p < 0.001), indicating that more PA and ST of the father was associated with more PA and less ST of the child, respectively. Furthermore, only in model 1 (PA), the effect of M1 (PA of the child) on BMI of the child was found significant (b2-path; coefficient: -0.050, SE: 0.022, p = 0.026), indicating that more PA of the child was related to a lower BMI of the child. All other effects in both models were found non-significant (i.e. model 1 (PA); a2-path, coefficient: 0.001, SE: 0.013, p = 0.967; b1-path, coefficient: 0.027, SE: 0.017, p = 0.107; model 2 (ST); a2-path, coefficient: 0.463, SE: 0.542, p = 0.393; b1-path, coefficient: 0.000, SE: 0.001, p = 0.922; b2-path, coefficient: 0.001, SE: 0.001, p = 0.103).

Indirect (mediational) effects

Only in model 1 (PA) a significant indirect (mediational) effect was found, i.e. the mediational effect of BMI of the father on BMI of the child via both M1 (PA of the father) and M2 (PA of the child) (M1&M2-path; coefficient: 0.001, 95% CI: [0.001, 0.002]). In both model 1 (PA) and model 2 (ST), all other indirect effects were found non-significant (model 1 (PA); a1xb1-path, coefficient: 0.000, 95% CI: [− 0.004, 0.003], a2xb2-path, coefficient: 0.000, 95% CI: [− 0.002, 0.002]; model 2 (ST); a1xb1-path, coefficient: 0.000, 95% CI: [− 0.002, 0.002], a2xb2-path, coefficient: 0.000, 95% CI: [− 0.001, 0.002], M1&M2-path, coefficient: 0.002, 95% CI: [0.000, 0.002]). As the direct effect (c’-path) of BMI of the father on BMI of the child was not reduced to zero in model 1 (PA) (i.e. the model with the significant mediational effect) (coefficient: 0.070, SE: 0.009, p < 0.001), this was only a partial mediation effect and effect sizes were only small (effect sizescz < 0.01).

Discussion

The aim of the present study was to determine whether the association between fathers’ weight status and their children’s weight status is mediated by fathers’ and children’s movement behaviours (i.e. physical activity (PA) and screen time (ST)), in six European countries. With this, we aimed to gain more insight into the specific and unique influence that fathers have on their children’s weight status, and the specific pathways through which this influence occurs. In line with our hypothesis, the present study found that the association between weight status of the father and weight status of the child (partially) occurred through both the father’s and the child’s PA levels. This might, as suggested in previous research, imply that fathers play a unique and important role in establishing and maintaining positive PA habits in their children, thereby affecting their weight status [44, 45]. The significant association found between fathers’ PA and their children’s PA in the mediation analysis is consistent with previous research [22, 33]. Studies have indeed shown that fathers typically engage in more vigorous, active, risky and stimulating play with their children than mothers [46, 47], and are better role models for fundamental movement skills (e.g. catching, throwing) due to their increased opportunity and encouragement to learn and practice these skills throughout life [47, 48]. Furthermore, if confirmed in a longitudinal design or an intervention study, the results of the present study might indicate that the established association between fathers’ and children’s weight status is not entirely determined by non-modifiable factors (e.g. genes). This could have important implications for future lifestyle interventions, as they suggest that intervening by focusing on lifestyle behaviours (i.e. PA) of fathers can be a good and important strategy to influence the lifestyle behaviours and weight status of children, thereby preventing childhood obesity [49]. As such, a first approach could be to focus on the fathers’ PA in order to improve the child’s PA and consequently the child’s weight status. A systematic review summarizing the effectiveness of PA interventions for adult males showed that most of these interventions had positive effects on their PA outcomes [50]. However, none of these studies were designed to influence children’s PA through fathers’ PA or measured the impact of change in fathers’ PA on children’s PA or weight status, making it difficult to draw conclusions on the effectiveness of this approach on health and health-related outcomes of children. Another possible approach might be to focus on both members of the father-child dyad. A novel way to do so, might be through “co-PA” (i.e. engaging fathers and children together in PA). Although the mechanisms of co-PA are still unclear, some recent studies already provided a good indication that engaging fathers and children in co-PA can indeed lead to positive outcomes related to behaviour and health [51, 52]. More specifically, two programs have recently been developed specifically targeting fathers and children, aiming to help overweight fathers lose weight and establish positive health behaviors for their children [51, 52]. The results of these intervention studies showed that engaging fathers and children in co-PA increased (total) PA in both fathers and children, and positively influenced their weight. Furthermore, father-child co-PA also improved the father-child relationship and the social-emotional well-being of the child, which has also been mentioned in other research as a consequence of co-PA [46, 48, 53]. Taken together, co-PA appears as a potentially promising approach, that might act on both the direct and indirect effects between father and child BMI. Further research on co-PA is however needed to better understand its mechanism, and to determine whether focusing on co-PA is of added value and thus more effective than focusing separately on PA of the father and PA of the child. Moreover, a longitudinal design or an intervention study is warranted to confirm the findings discussed above, before definite conclusions and intervention recommendations can be made. As such, we are currently developing the “Run Daddy Run” intervention specifically targeting fathers and their children in order to improve their co-PA and limit their screen time.

In contrast to PA, the present study did not find a significant mediation effect of ST of the father and ST of the child on the association between BMI of the father and BMI of the child. Although we did found a significant positive association between fathers’ ST and their children’s ST -which is interesting as previous research on this association was currently scarce and inconclusive (33, 54, 55)-, a possible reason for the fact that no mediation effect was found might be that mainly mothers have an influence on their children’s ST, as previously suggested in research [54, 55]. Furthermore, another potential reason for the absent mediation effect of ST could be due to the non-significant association between ST of the child on BMI of the child. As significant associations between children’s ST and their weight status have been established in previous research [56,57,58,59,60], it might be that the strength of this association is underestimated in the present study, causing a non-significant mediation effect. Similarly, although a significant (partial) mediation effect of PA of the father and PA of the child on the association between weight status of fathers and weight status children was found in the present study, effect sizes were only small. Therefore, the clinical meaningfulness of the results should be interpreted with caution. The small effects might be due to the small association found between BMI and PA of the father. This is surprising as previous studies have shown stronger associations between adults’ weight status and their PA levels [61,62,63]. A reason for the weak or non-significant associations might be that BMI, PA and ST of the father was self-reported, and children’s PA and ST was based on parental report. Parental report is a subjective proxy-measure that may be biased. Using objectively measuring BMI, PA and SB may overcome this issue, which is therefore recommended for future research. Furthermore, two of our questions used for calculating the PA and ST measure (i.e. children’s PA on weekend days and fathers’ ST on weekday) had a lower reliability. Despite the fact that the reliability of the other questions measuring PA and ST questions was moderate to excellent, using existing validated and reliable questionnaires to measure PA and ST is recommended. Last, small effect sizes can also be due to residual confounders such as dietary behaviour, which was not accounted for in the present study.

Although the cross-sectional design of the study is a limitation, a strength of the present study is that standardized (paternal) data were included from six European countries, increasing the generalizability of the results and providing a large sample of fathers (n = 899). Although fathers represented only 10.1% of the total sample of the Feel4Diabetes-study (i.e. which is similar to previous research showing that mothers represent the majority of research participants [17]), our sample of fathers was still large enough to have a meaningful representation of fathers. Descriptive data from this study confirmed that our sample of fathers was indeed representative for the general population, with descriptive data (e.g. age, BMI, education level, etc.) similar to previous prevalence studies [64,65,66]. The underrepresentation of fathers in the Feel4Diabetes-study may be due to the fact that no recruitment strategies were used that explicitly targeted fathers. This may have caused a selection bias towards fathers who are generally more involved in child care and motivated for health and healthy lifestyle behaviours. Future research can target this issue by including recruitment strategies in which fathers are explicitly invited to participate (i.e. fathers often assume that the term “parent” is interchangeable with “mother” [16]), by targeting father-focused recruitment venues (e.g. work settings) and by clearly communicating the salient benefits and motivators for fathers (e.g. enhancing father-child relationship, spending quality time with their children) [16, 67].

Conclusions

The present study showed that the association between fathers’ and children’s weight status is (partially) mediated by fathers’ and children’s PA (but not their ST). This helps us gaining more insight into the specific pathway through which fathers’ weight status influences their children’s weight status, and might imply that this association is not entirely determined by non-modifiable factors (e.g. genes). If confirmed in a longitudinal design or in an intervention study (e.g. the Run Daddy Run intervention), these findings might also have implications for future lifestyle interventions, as they indicate that intervening by focusing on fathers’ and children’s PA (i.e. preferably through engaging them together in PA) can be an important and novel strategy to influence weight status of children, thereby preventing childhood obesity.

Availability of data and materials

The data of the present study is available from the corresponding author on reasonable request.

Abbreviations

BMI:

Body Mass Index

PA:

Physical activity

SB:

Sedentary behaviour

ST:

Screen time

References

  1. World Health Organization. Childhood overweight and obesity 2016. Available from: http://www.who.int/dietphysicalactivity/childhood/en/. Accessed 14 Feb 2019.

  2. Kremers SP, De Bruijn G-J, Visscher TL, Van Mechelen W, De Vries NK, Brug J. Environmental influences on energy balance-related behaviors: a dual-process view. Int J Behav Nutr Phy. 2006;3(1):9.

    Article  Google Scholar 

  3. Tremblay MS, Carson V, Chaput J-P, Connor Gorber S, Dinh T, Duggan M, et al. Canadian 24-hour movement guidelines for children and youth: an integration of physical activity, sedentary behaviour, and sleep. Appl Physiol Nutr Metab. 2016;41(6):S311–S27.

    Article  PubMed  Google Scholar 

  4. Hinkley T, Salmon J, Okely AD, Crawford D, Hesketh K. Preschoolers’ physical activity, screen time, and compliance with recommendations. Med Sci Sports Exerc. 2012;44(3):458–65.

    Article  PubMed  Google Scholar 

  5. American Academy of Pediatrics. Announces New Recommendations for Children’s Media Use 2016. Available from: https://www.aap.org/en-us/about-the-aap/aap-press-room/Pages/American-Academy-of-Pediatrics-Announces-New-Recommendations-for-Childrens-Media-Use.aspx. Accessed 18 Nov 2018.

  6. Santaliestra-Pasias AM, Mouratidou T, Verbestel V, Bammann K, Molnar D, Sieri S, et al. Physical activity and sedentary behaviour in European children: the IDEFICS study. Public Health Nutr. 2014;17(10):2295–306.

    Article  PubMed  Google Scholar 

  7. Viner R, Macfarlane A. Health promotion. BMJ. 2005;330(7490):527–9.

    Article  PubMed  PubMed Central  Google Scholar 

  8. Kelder SH, Perry CL, Klepp KI, Lytle LL. Longitudinal tracking of adolescent smoking, physical activity, and food choice behaviors. Am J Public Health. 1994;84(7):1121–6.

    Article  CAS  PubMed  PubMed Central  Google Scholar 

  9. Biddle SJ, Pearson N, Ross GM, Braithwaite R. Tracking of sedentary behaviours of young people: a systematic review. Prev Med. 2010;51(5):345–51.

    Article  PubMed  Google Scholar 

  10. DeMattia L, Lemont L, Meurer L. Do interventions to limit sedentary behaviours change behaviour and reduce childhood obesity? A critical review of the literature. Obes Rev. 2007;8(1):69–81.

    Article  CAS  PubMed  Google Scholar 

  11. Epstein LH, Paluch RA, Gordy CC, Dorn J. Decreasing sedentary behaviors in treating pediatric obesity. Arch Pediatr Adolesc Med. 2000;154(3):220–6.

    Article  CAS  PubMed  Google Scholar 

  12. Glanz K, Rimer BK, Viswanath K. Health behavior: Theory, research, and practice. 4th ed. San Fransisco: Jossey-Bass; 2008.

  13. UNICEF. Module 1: What are the Social Ecological Model (SEM), Communication for Development (C4D) 2009. Available from: www.unicef.org/cbsc/files/Module_1_SEM-C4D.docx. Accessed 21 Nov 2018.

  14. Trost SG, Sallis JF, Pate RR, Freedson PS, Taylor WC, Dowda M. Evaluating a model of parental influence on youth physical activity. Am J Prev Med. 2003;25(4):277–82.

    Article  PubMed  Google Scholar 

  15. Bauman AE, Reis RS, Sallis JF, Wells JC, Loos RJ, Martin BW. Correlates of physical activity: why are some people physically active and others not? Lancet. 2012;380(9838):258–71.

    Article  PubMed  Google Scholar 

  16. Morgan PJ, Young MD. The influence of fathers on Children's physical activity and dietary behaviors: insights, recommendations and future directions. Curr Obes Rep. 2017;6(3):324–33.

    Article  PubMed  Google Scholar 

  17. Davison KK, Gicevic S, Aftosmes-Tobio A, Ganter C, Simon CL, Newlan S, et al. Fathers’ representation in observational studies on parenting and childhood obesity: a systematic review and content analysis. Am J Public Health. 2016;106(11):e14–21.

    Article  PubMed  PubMed Central  Google Scholar 

  18. Morgan PJ, Young MD, Lloyd AB, Wang ML, Eather N, Miller A, et al. Involvement of Fathers in Pediatric Obesity Treatment and Prevention Trials: A Systematic Review. Pediatrics. 2017;139(2). https://doi.org/10.1542/peds.2016-2635.

    Article  PubMed  Google Scholar 

  19. Ball J, Moselle K, Pedersen S. Father's involvement as a determinant of child health: father involvement research Alliance; 2007.

    Google Scholar 

  20. Freeman E, Fletcher R, Collins CE, Morgan PJ, Burrows T, Callister R. Preventing and treating childhood obesity: time to target fathers. Int J Obes. 2012;36(1):12–5.

    Article  CAS  Google Scholar 

  21. Burke V, Beilin L, Dunbar D. Family lifestyle and parental body mass index as predictors of body mass index in Australian children: a longitudinal study. Int J Obes. 2001;25(2):147.

    Article  CAS  Google Scholar 

  22. Ferreira I, van der Horst K, Wendel-Vos W, Kremers S, van Lenthe FJ, Brug J. Environmental correlates of physical activity in youth - a review and update. Obes Rev. 2007;8(2):129–54.

    Article  CAS  PubMed  Google Scholar 

  23. Van Der Horst K, Paw MJ, Twisk JW, Van WM. A brief review on correlates of physical activity and sedentariness in youth. Med Sci Sports Exerc. 2007;39(8):1241–50.

    Article  Google Scholar 

  24. Sallis JF, Prochaska JJ, Taylor WC. A review of correlates of physical activity of children and adolescents. Med Sci Sports Exerc. 2000;32(5):963–75.

    Article  CAS  PubMed  Google Scholar 

  25. Vollmer RL, Adamsons K, Gorin A, Foster JS, Mobley AR. Investigating the relationship of body mass index, diet quality, and physical activity level between fathers and their preschool-aged children. J Acad Nutr Diet. 2015;115(6):919–26.

    Article  PubMed  Google Scholar 

  26. Fuemmeler BF, Anderson CB, Mâsse LC. Parent-child relationship of directly measured physical activity. Int J Behav Nutr Phy. 2011;8(1):17.

    Article  Google Scholar 

  27. Isgor Z, Powell LM, Wang Y. Multivariable analysis of the association between fathers’ and youths’ physical activity in the United States. BMC Public Health. 2013;13:1075.

    Article  PubMed  PubMed Central  Google Scholar 

  28. Jago R, Sebire SJ, Wood L, Pool L, Zahra J, Thompson JL, et al. Associations between objectively assessed child and parental physical activity: a cross-sectional study of families with 5-6 year old children. BMC Public Health. 2014;14:655.

    Article  PubMed  PubMed Central  Google Scholar 

  29. Lloyd AB, Lubans DR, Plotnikoff RC, Collins CE, Morgan PJ. Maternal and paternal parenting practices and their influence on children's adiposity, screen-time, diet and physical activity. Appetite. 2014;79:149–57.

    Article  PubMed  Google Scholar 

  30. Craig CL, Cameron C, Tudor-Locke C. Relationship between parent and child pedometer-determined physical activity: a sub-study of the CANPLAY surveillance study. Int J Behav Nutr Phys Act. 2013;10:8.

    Article  PubMed  PubMed Central  Google Scholar 

  31. Jacobi D, Caille A, Borys J-M, Lommez A, Couet C, Charles M-A, et al. Parent-offspring correlations in pedometer-assessed physical activity. PLoS One. 2011;6(12):e29195.

    Article  CAS  PubMed  PubMed Central  Google Scholar 

  32. Maia J, Gomes TN, Tregouet DA, Katzmarzyk PT. Familial resemblance of physical activity levels in the Portuguese population. J Sci Med Sport. 2014;17(4):381–6.

    Article  PubMed  Google Scholar 

  33. Neshteruk CD, Nezami BT, Nino-Tapias G, Davison KK, Ward DS. The influence of fathers on children's physical activity: a review of the literature from 2009 to 2015. Prev Med. 2017;102:12–9.

    Article  PubMed  Google Scholar 

  34. Fuemmeler BF, Anderson CB, Masse LC. Parent-child relationship of directly measured physical activity. Int J Behav Nutr Phys Act. 2011;8:17.

    Article  PubMed  PubMed Central  Google Scholar 

  35. Prince S, Reed J, McFetridge C, Tremblay M, Reid R. Correlates of sedentary behaviour in adults: a systematic review. Obes Rev. 2017;18(8):915–35.

    Article  CAS  PubMed  Google Scholar 

  36. Atkinson K, Lowe S, Moore S. Human development, occupational structure and physical inactivity among 47 low and middle income countries. Prev Med Rep. 2016;3:40–5.

    Article  PubMed  Google Scholar 

  37. Manios Y, Androutsos O, Lambrinou C-P, Cardon G, Lindstrom J, Annemans L, et al. A school-and community-based intervention to promote healthy lifestyle and prevent type 2 diabetes in vulnerable families across Europe: design and implementation of the Feel4Diabetes-study. Public Health Nutr. 2018;21(17):3281–90.

    Article  PubMed  Google Scholar 

  38. De Craemer M, Lateva M, Iotova V, De Decker E, Verloigne M, De Bourdeaudhuij I, et al. Differences in energy balance-related behaviours in European preschool children: the ToyBox-study. PLoS One. 2015;10(3):e0118303.

    Article  PubMed  PubMed Central  CAS  Google Scholar 

  39. Brug J, van Stralen MM, Te Velde SJ, Chinapaw MJ, De Bourdeaudhuij I, Lien N, et al. Differences in weight status and energy-balance related behaviors among schoolchildren across Europe: the ENERGY-project. Plos One. 2012;7(4):e34742.

    Article  CAS  PubMed  PubMed Central  Google Scholar 

  40. Corp I. IBM SPSS statistics for windows, version 25.0. Armonk, NY: IBM Corp. 2017.

  41. Baron RM, Kenny DA. The moderator–mediator variable distinction in social psychological research: conceptual, strategic, and statistical considerations. J Pers Soc Psychol. 1986;51(6):1173.

    Article  CAS  PubMed  Google Scholar 

  42. Preacher KJ, Hayes AF. Asymptotic and resampling strategies for assessing and comparing indirect effects in multiple mediator models. Behav Res Methods. 2008;40(3):879–91.

    Article  PubMed  Google Scholar 

  43. Preacher KJ, Kelley K. Effect size measures for mediation models: quantitative strategies for communicating indirect effects. Psychol Methods. 2011;16(2):93–115.

    Article  PubMed  Google Scholar 

  44. Beets MW, Foley JT. Association of father involvement and neighborhood quality with kindergartners' physical activity: a multilevel structural equation model. Am J Health Promot. 2008;22(3):195–203.

    Article  PubMed  Google Scholar 

  45. Lloyd AB, Lubans DR, Plotnikoff RC, Morgan PJ. Paternal lifestyle-related parenting practices mediate changes in Children's dietary and physical activity behaviors: findings from the healthy dads, healthy kids community randomized controlled trial. J Phys Act Health. 2015;12(9):1327–35.

    Article  PubMed  Google Scholar 

  46. Lamb ME. The role of the father in child development. 3th ed. New York: Wiley; 1997.

  47. Fletcher R, May C, St George J, Morgan PJ, Lubans DR. Fathers’ perceptions of rough-and-tumble play: implications for early childhood services. Australas J Early Childhood. 2011;36(4):131.

    Article  Google Scholar 

  48. Paquette D. Theorizing the father-child relationship: mechanisms and developmental outcomes. Hum Dev. 2004;47(4):193–219.

    Article  Google Scholar 

  49. Young MD, Callister R, Collins CE, Plotnikoff RC, Aguiar EJ, Morgan PJ. Efficacy of a gender-tailored intervention to prevent weight regain in men over 3 years: a weight loss maintenance RCT. Obesity (Silver Spring). 2017;25(1):56–65.

    Article  Google Scholar 

  50. George ES, Kolt GS, Duncan MJ, Caperchione CM, Mummery WK, Vandelanotte C, et al. A review of the effectiveness of physical activity interventions for adult males. Sports Med. 2012;42(4):281–300.

    Article  PubMed  Google Scholar 

  51. Morgan PJ, Lubans DR, Callister R, Okely AD, Burrows TL, Fletcher R, et al. The ‘Healthy dads, healthy Kids’ randomized controlled trial: efficacy of a healthy lifestyle program for overweight fathers and their children. Int J Obes. 2011;35(3):436–47.

    Article  CAS  Google Scholar 

  52. Morgan PJ, Young MD, Barnes AT, Eather N, Pollock ER, Lubans DR. Engaging fathers to increase physical activity in girls: the “dads and daughters exercising and empowered” (DADEE) randomized controlled trial. Ann Behav Med. 2018.

  53. Lindsey EW, Cremeens PR, Caldera YM. Mother–child and father–child mutuality in two contexts: consequences for young children’s peer relationships. Infant Child Dev. 2010;19(2):142–60.

    Google Scholar 

  54. Schoeppe S, Vandelanotte C, Bere E, Lien N, Verloigne M, Kovács É, et al. The influence of parental modelling on children’s physical activity and screen time: does it differ by gender? Eur J Public Health. 2016;27(1):152–7.

    Google Scholar 

  55. Jago R, Stamatakis E, Gama A, Carvalhal IM, Nogueira H, Rosado V, et al. Parent and child screen-viewing time and home media environment. Am J Prev Med. 2012;43(2):150–8.

    Article  PubMed  Google Scholar 

  56. Jago R, Baranowski T, Baranowski JC, Thompson D, Greaves K. BMI from 3–6 y of age is predicted by TV viewing and physical activity, not diet. Int J Obes. 2005;29(6):557.

    Article  CAS  Google Scholar 

  57. Dietz WH, Gortmaker SL. Do we fatten our children at the television set? Obesity and television viewing in children and adolescents. Pediatrics. 1985;75(5):807–12.

    PubMed  Google Scholar 

  58. Marshall SJ, Biddle SJ, Gorely T, Cameron N, Murdey I. Relationships between media use, body fatness and physical activity in children and youth: a meta-analysis. Int J Obes. 2004;28(10):1238.

    Article  CAS  Google Scholar 

  59. Janssen I, Katzmarzyk PT, Boyce WF, Vereecken C, Mulvihill C, Roberts C, et al. Comparison of overweight and obesity prevalence in school-aged youth from 34 countries and their relationships with physical activity and dietary patterns. Obes Rev. 2005;6(2):123–32.

    Article  CAS  PubMed  Google Scholar 

  60. Must A, Tybor D. Physical activity and sedentary behavior: a review of longitudinal studies of weight and adiposity in youth. Int J Obes. 2005;29(S2):S84.

    Article  Google Scholar 

  61. Martínez-González MÁ, Martinez JA, Hu F, Gibney M, Kearney J. Physical inactivity, sedentary lifestyle and obesity in the European Union. Int J Obes. 1999;23(11):1192.

    Article  Google Scholar 

  62. Brownson RC, Eyler AA, King AC, Brown DR, Shyu Y-L, Sallis JF. Patterns and correlates of physical activity among US women 40 years and older. Am J Public Health. 2000;90(2):264.

    Article  CAS  PubMed  PubMed Central  Google Scholar 

  63. Schröder H, Marrugat J, Elosua R, Covas MI. Relationship between body mass index, serum cholesterol, leisure-time physical activity, and diet in a Mediterranean southern-Europe population. Br J Nutr. 2003;90(2):431–9.

    Article  PubMed  CAS  Google Scholar 

  64. Di Cesare M, Bentham J, Stevens GA, Bjertness E, Bjertness MB, Ekelund U, et al. Trends in adult body-mass index in 200 countries from 1975 to 2014: a pooled analysis of 1698 population-based measurement studies with 19.2 million participants. 2016.

  65. Marques A, Sarmento H, Martins J, Nunes LS. Prevalence of physical activity in European adults—compliance with the World Health Organization's physical activity guidelines. Prev Med. 2015;81:333–8.

    Article  PubMed  Google Scholar 

  66. Schoeppe S, Rebar AL, Short CE, Alley S, Van Lippevelde W, Vandelanotte C. How is adults’ screen time behaviour influencing their views on screen time restrictions for children? A cross-sectional study. BMC Public Health. 2016;16(1):201.

    Article  PubMed  PubMed Central  Google Scholar 

  67. Davison KK, Charles JN, Khandpur N, Nelson TJ. Fathers’ perceived reasons for their underrepresentation in child Health Research and strategies to increase their involvement. Matern Child Health J. 2017;21(2):267–74.

    Article  PubMed  PubMed Central  Google Scholar 

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Acknowledgements

The Feel4Diabetes-study has received funding from the European Union’s Horizon 2020 research and innovation programme under grant agreement n° 643708. The content of this article reflects only the authors‟ views and the European Community is not liable for any use that may be made of the information contained therein”.

figure b

The Feel4Diabetes-study group consists of: Coordinator: Yannis Manios1, Project manager: Odysseas Androutsos1, Steering Committee: Yannis Manios1, Greet Cardon3a, Jaana Lindström2, Peter Schwarz4, Konstantinos Makrilakis5, Lieven Annemans3b, Dimitrios Kakoulis6.

The Feel4Diabetes member group: Yannis Manios1, Meropi Kontogianni1, Odysseas Androutsos1, George Moschonis1, Konstantina Tsoutsoulopoulou1, Christina Mavrogianni1, Christina Katsarou1, Eva Karaglani1, Eirini Efstathopoulou1, Ioanna Kechribari1, Konstantina Maragkopoulou1, Effie Argyri1, Athanasios Douligeris1, Mary Nikolaou1, Eleni-Anna Vampouli1, Katerina Kouroupaki1, Roula Koutsi1, Elina Tzormpatzaki1, Eirini Manou1, Panagiota Mpinou1, Alexandra Karachaliou1, Christina Filippou1, Amalia Filippou1, Jaana Lindström2, Tiina Laatikainen2, Katja Wikström2, Karoliina Nelimarkka2, Jemina Kivelä2, Päivi Valve2, Greet Cardon3a, Julie Latomme3a, Vicky Van Stappen3a, Nele Huys3a, Lieven Annemans3b, Lore Pil3b,Prof. Dr. Peter Schwarz4, Ivonne Panchyrz4, Maxi Holland4, Patrick Timpel4, Konstantinos Makrilakis5, Stavros Liatis5, George Dafoulas5, Christina-Paulina Lambrinou5, Angeliki Giannopoulou5, Lydia Tsirigoti5, Evi Fappa5, Costas Anastasiou5, Konstantina Zachari5, Lala Rabemananjara6, Dimitrios Kakoulis6, Mayur Mandalia6, Maria Stella de Sabata6, Niti Pall6,Luis Moreno7, Fernando Civeira7, Gloria Bueno7, Pilar De Miguel-Etayo7, Esther Mª Gonzalez-Gil7, Maria I Mesana7, Germán Vicente-Rodriguez7, Gerardo Rodriguez7, Lucia Baila-Rueda7, Ana Cenarro7, Estíbaliz Jarauta7, Rocío Mateo-Gallego7, Violeta Iotova8, Tsvetalina Tankova8, Natalia Usheva8, Kaloyan Tsochev8, Nevena Chakarova8, Sonya Galcheva8, Rumyana Dimova8, Yana Bocheva8, Zhaneta Radkova8, Vanya Marinova8, Imre Rurik9, Timea Ungvari9, Zoltán Jancsó9, Anna Nánási9, László Kolozsvári9, Remberto Martinez10, Marcos Tong10, Kaisla Joutsenniemi10, Katrina Wendel-Mitoraj10.

Funding

The Feel4Diabetes-study was funded by the European Union’s Horizon 2020 research and innovation programme under grant agreement n° 643708. The funding body did not did not have any role in the design of the study and collection, analysis, and interpretation of data and in writing the manuscript. The content of this article reflects only the authors’ views and the European Community is not liable for any use that may be made of the information contained therein.

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Conceptualization, JL, GC; Data Curation, JL, NH, ML, NC, JK, OA, EMGG, PME, AN, LRK, JLi, YM; Methodology, JL; Formal Analysis, JL; Investigation, JL; Writing-Original Draft Preparation, JL; Writing-Review & Editing, JL, NH, GC, PJM, ML, NC, JK, JLi, OA, EMGG, PME, YM, MDC; Supervision, GC; Project Administration, YM, OA; Funding Acquisition, YM, JLi, GC. All authors read and approved the final manuscript.

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Correspondence to Julie Latomme.

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Latomme, J., Huys, N., Cardon, G. et al. Do physical activity and screen time mediate the association between European fathers’ and their children’s weight status? Cross-sectional data from the Feel4Diabetes-study. Int J Behav Nutr Phys Act 16, 100 (2019). https://doi.org/10.1186/s12966-019-0864-8

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