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Table 5 Longitudinal associations between sedentary behaviour, physical activity and bone stiffness index percentiles after 6 years

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

 

Whole group

Thin/normal weight group

Overweight/obese group

β (99%CI)

p-value

β (99%CI)

p-value

β (99%CI)

p-value

Main sample (self-reported data, N = 716)

 Baseline watching TV/video/DVD (hours/week)

− 0.18(− 0.80,0.44)

0.444

−0.18(− 0.93,0.57)

0.531

−0.36(−1.50,0.77)

0.404

 Baseline playing computer/games (hours/week)

0.24(−0.59,1.08)

0.448

0.33(−0.73,1.39)

0.420

−0.16(−1.51,1.20)

0.766

 Baseline sports clubs (hours/week)

1.79(−0.16,3.74)

0.018

1.99(−0.29,4.27)

0.024

0.59(−3.20,4.38)

0.686

 Change of watching TV/video/DVD (hours/week)

−0.16(− 0.61,0.29)

0.362

− 0.20(− 0.74,0.34)

0.335

−0.10(− 0.93,0.72)

0.744

 Change of playing computer/games (hours/week)

−0.13(− 0.59,0.33)

0.472

0.11(− 0.45,0.67)

0.617

−0.75(−1.58,0.07)

0.019

 Change of sports clubs (hours/week)

1.01(−0.10,2.12)

0.020

1.54 (0.23,2.85)

0.002

−0.46(−2.64,1.73)

0.588

 Weight bearing sports

 Moderate or high mechanical loads vs. No or low mechanical loads (reference)

4.47(−2.29,11.22)

0.088

2.48(−5.39,10.36)

0.416

11.26(−1.69,24.22)

0.025

Subsample (accelerometer data, N = 398)

 Baseline sedentary time (hours/day)

−0.44(−4.00,3.13)

0.751

0.08(−4.19,4.35)

0.961

1.03(−5.82,7.88)

0.693

 Baseline light physical activity (hours/day)

−2.70(−7.01,1.62)

0.106

−1.68(−6.76,3.41)

0.393

−5.13 (12.46,2.19)

0.068

 Baseline moderate-to-vigorous physical activity (10 min/day)

3.67 (1.55,5.79)

< 0.001

3.49 (1.03,5.95)

< 0.001

4.94 (0.92,8.97)

0.002

 Change of sedentary time (hours/day)

−0.18(−2.55,2.18)

0.840

0.16(−2.69,3.01)

0.884

−1.61(−5.51,2.28)

0.277

 Change of light physical activity (hours/day)

−0.53(−3.78,2.71)

0.670

0.11(−3.70,3.92)

0.938

−2.18(−7.82,3.45)

0.309

 Change of moderate-to-vigorous physical activity (10 min/day)

1.53(−0.04,3.10)

0.012

1.74(−0.10,3.59)

0.015

0.87(−2.09,3.83)

0.441

  1. Adjusted for baseline age, sex, socio-economic status, daylight, bone stiffness index percentiles, height and weight z-scores and puberty at six-year follow-up, country as a random effect