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Table 2 Baseline and changes of measurements over two-year and six-year follow-up

From: Cross-sectional and longitudinal associations between physical activity, sedentary behaviour and bone stiffness index across weight status in European children and adolescents

 

Baseline

Two-year changes

Six-year changes

Thin/normal weight

Overweight/obese

Thin/normal weight

Overweight/obese

Thin/normal weight

Overweight/obese

(N = 1627 a/833 b)

(N = 381 a/204 b)

(N = 1273 a/633 b)

(N = 380 a/206 b)

(N = 523 a/302 b)

(N = 193 a/96 b)

Anthropometric measures (Mean, SD) c

 Percentiles of bone stiffness index

43.92 (27.84)

41.36 (25.76)

3.86 (30.17)

4.60 (25.55)

8.08 (34.59) *

18.88 (33.46) *

 Height z-score

0.37 (1.00) *

0.87 (1.02) *

0.04 (0.40)

0.06 (0.39)

0.20 (0.60) *

0.05 (0.68) *

 Weight z-score

0.07 (0.87) *

2.00 (0.78) *

0.03 (0.38) *

0.19 (0.52) *

0.21 (0.66) *

0.43 (0.87) *

Reported healthy behaviour

 Watching TV/video/DVD (hours/week, Mean, SD) c

8.67 (5.00) *

9.74 (5.32) *

0.62 (4.57)

0.71 (5.13)

2.05 (6.41)

3.09 (7.57)

 Playing computer/games (hours/week, Mean, SD) c

2.34 (3.39)

2.69 (3.58)

1.38 (3.58) *

2.17 (4.66) *

2.84 (5.83)

3.63 (7.16)

 Sports clubs (hours/week, Mean, SD) c

1.13 (1.60)

1.32 (1.63)

0.72 (1.77)

0.56 (1.89)

1.41 (2.56)

0.90 (2.67)

Weight bearing sports (N, %) d

 Moderate or high mechanical loads

752 (79.5)

194 (20.5)

866 (76.5)

266 (23.5)

396 (73.5)

143 (26.5)

 No or low mechanical loads

875 (82.4)

187 (17.6)

407 (78.1)

114 (21.9)

127 (71.8)

50 (28.2)

Accelerometer data (Mean, SD)

 Sedentary time (hours/day) c

4.46 (1.21) *

4.72 (1.26) *

0.70 (1.39)

0.61 (1.42)

2.31 (1.53)

2.41 (1.59)

 Light physical activity (hours/day) c

6.37 (1.00)

6.39 (1.10)

−0.46 (1.14)

−0.57 (1.23)

−1.47 (1.28)

− 1.56 (1.29)

 Moderate-to-vigorous physical activity (10 min/day) c

4.28 (2.21) *

3.57 (1.93) *

−0.23 (2.43)

− 0.45 (1.96)

0.10 (2.61)

− 0.50 (2.72)

  1. a Sample size with full information of self-reported physical activity and sedentary behaviour as well as co-variables. b Sample size with full information of accelerometer data as well as co-variables. c Changes of values were the differences between follow-up and baseline measurements. d Changes of values were the percentages of reported moderate or high mechanical loads at baseline or follow-up, and no or low mechanical loads in both waves, respectively. * p < 0.01
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International Journal of Behavioral Nutrition and Physical Activity

ISSN: 1479-5868

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