From: Longitudinal changes in sedentary time and physical activity during adolescence
12 years Mean(SD) | 15 years Mean(SD) | Difference (95% CI) Mean(SD) | P Value of difference a | |||
---|---|---|---|---|---|---|
Proportion of time (%) | Sedentary time (%) | School | 66.22 (8.06) | 74.46 (7.87) | +8.23 (7.35 to 9.13) | <0.001 |
After-school | 63.15 (9.75) | 70.14 (9.31) | +6.99 (5.91 to 8.07) | <0.001 | ||
Weekendsb | 64.45 (9.00) | 71.43 (10.37) | +6.86 (5.10 to 8.62) | <0.001 | ||
Light PA (%) | School | 27.21 (6.26) | 19.58 (5.87) | -7.62 (-8.26 to -6.98) | <0.001 | |
After-school | 27.82 (6.59) | 20.80 (6.10) | -7.01 (-7.74 to -6.28) | <0.001 | ||
Weekendsb | 28.24 (6.10) | 21.53 (6.67) | -6.72 (-7.80 to -5.65) | <0.001 | ||
MVPA (%) | School | 6.60 (3.80) | 5.95 (3.53) | -0.64 (-1.11 to -0.18) | 0.007 | |
After-school | 9.00 (4.95) | 9.04 (5.59) | +0.04 (-0.58 to 0.67) | 0.893 | ||
Weekendsb | 7.31 (4.32) | 7.03 (6.35) | -0.14 (-1.18 to 0.90) | 0.582 | ||
Time (minutes) in each intensity | Sedentary time (minutes) | School | 263.9 (36.2) | 295.9 (35.7) | +32.0 (28.4 to 35.6) | <0.001 |
After-school | 213.7 (34.1) | 238.5 (33.7) | +24.8 (21.1 to 28.5) | <0.001 | ||
Weekendsb | 449.6 (62.8) | 498.4 (72.4) | +48.8 (36.9 to 60.6) | <0.001 | ||
LPA (minutes) | School | 108.1 (24.4) | 77.7 (23.1) | -30.4 (-32.9 to -27.9) | <0.001 | |
After-school | 94.5 (23.8) | 71.0 (22.0) | -23.5 (-26.0 to -21.0) | <0.001 | ||
Weekendsb | 197.5 (42.2) | 150.6 (46.7) | -46.9 (-54.4 to -39.4) | <0.001 | ||
MVPA (minutes) | School | 26.3 (14.9) | 23.8 (14.4) | -2.5 (-4.4 to -0.7) | 0.007 | |
After-school | 30.6 (17.2) | 31.0 (19.7) | +0.4 (-1.8 to 2.5) | 0.724 | ||
Weekendsb | 50.7 (30.1) | 49.8 (45.1) | -1.0 (-8.2 to 6.3) | 0.582 |