Skip to main content

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