Analysis of time spent engaged in PA categories by gender, BMI category, and day
| Factor | Mean CPM±SD (95% CI) | Mean PA by category±SD, min/day (95% CI) | ||||
| LPA | MPA | VPA | MVPA | TPA | ||
| Gender | ||||||
| Boys (n=174) | 498.3±120.3* (478.7 to 516.7) | 99.2±18.4* (96.8 to 102.0) | 40.9±9.7 (39.5 to 42.3) | 31.9±10.7* (30.4 to 33.4) | 72.8±18.8* (70.1 to 75.4) | 171.9±34.0* (167.1 to 176.8) |
| Girls (n=129) | 468.0±109.3 (447.3 to 486.2) | 94.6±15.9 (91.8 to 97.3) | 38.8±8.0 (37.3 to 40.1) | 29.6±8.6 (28.0 to 31.1) | 68.3±15.1 (65.7 to 70.9) | 162.9±27.6 (158.0 to 167.6) |
| BMI | ||||||
| Normal (n=245) | 484.7±113.6 (470.0 to 501.4) | 96.9±17.4 (94.7 to 99.1) | 39.8±8.8 (38.7 to 41.0) | 30.9±9.6 (29.7 to 32.0) | 70.7±17.0 (68.7 to 72.9) | 167.6±31.1 (163.8 to 171.5) |
| Overweight (n=40) | 476.0±121.5 (437.3 to 514.6) | 99.0±18.2 (93.5 to 104.9) | 40.0±9.7 (37.1 to 43.4) | 30.3±10.9 (27.1 to 34.0) | 70.3±19.7 (64.4 to 76.9) | 169.3±35.5 (158.2 to 181.2) |
| Obesity (n=18) | 509.9±144.2 (444.0 to 580.5) | 97.7±16.9 (89.3 to 105.2) | 42.1±11.1 (37.4 to 47.2) | 32.3±12.1 (26.7 to 37.9) | 74.4±19.0 (65.7 to 83.0) | 171.0±32.4 (156.0 to 186.4) |
| Type of day | ||||||
| Week (n=303) | 471.0±117.4†(457.8 to 484.6) | 96.4±17.9 (94.5 to 98.3) | 39.3±9.3†(38.3 to 40.4) | 30.9±9.9 (29.9 to 32.1) | 70.2±17.5 (68.4 to 72.1) | 166.6±32.3† (163.2 to 170.1) |
| Weekend (n=303) | 517.4±166.2 (497.4 to 536.5) | 98.6±24.8 (95.8 to 101.4) | 41.6±12.0 (40.1 to 43.1) | 30.6±13.3 (29.2 to 32.2) | 72.1±24.0 (69.6 to 75.0) | 170.6±44.3 (165.8 to 175.6) |
| ALL (n=303) | 485.0±116.4 (472.6 to 500.0) | 97.2±17.5 (95.2- to 99.2) | 40.0±9.1 (39.0 to 40.1) | 30.9±9.9 (29.8 to 32.0) | 70.9±17.5 (68.9 to 72.9) | 168.0±31.7 (164.6 to 171.6) |
| Percentage time spent in different intensities of PA, % | – | 13.1±2.1 (12.8 to 13.3) | 5.4 ± 1.1 (5.2 to 5.5) | 4.2±1.3 (4.0 to 4.3) | 9.5±2.2 (9.3 to 9.8) | 22.6±3.7 (22.1 to 23.0) |
Significant data are shown in bold.
Mean±SD and 95% CI are reported for normally distributed variables.
*P<0.05, boys versus girls.
†P<0.05, weekdays versus weekend days.
CPM, counts per minute; LPA, light physical activity; MPA, moderate physical activity; MVPA, moderate-to-vigorous physical activity; PA, physical activity; TPA, total physical activity; VPA, vigorous physical activity.