Table 1. Distribution of variables originating from Actiwatch and Lifecorder comparing activity variables of children who participated in sports club with those who did not.
| participate in sports club | t test p value |
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| Yes (n=24) | No (n=10) | ||||||
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| Mean | ± | SD | Mean | ± | SD | ||
| age (year) | 10.8 | ± | 0.9 | 10.9 | ± | 0.7 | 0.635 |
| weight (kg) | 34.4 | ± | 5.9 | 36.8 | ± | 9.3 | 0.460 |
| height (cm) | 140.8 | ± | 7.5 | 141.4 | ± | 5.9 | 0.831 |
| body mass index (kg/m2) | 17.2 | ± | 1.9 | 18.2 | ± | 3.5 | 0.425 |
| physical activity indes | 1.62 | ± | 0.07 | 1.54 | ± | 0.05 | 0.004 |
| TEE (kcal/day) | 2002.1 | ± | 236.8 | 2101.6 | ± | 394.3 | 0.369 |
| EEPA (kcal/day) | 288.9 | ± | 61.1 | 212.4 | ± | 49.4 | 0.002 |
| steps (step/day) | 17925 | ± | 2983 | 13206 | ± | 3649 | <0.001 |
| maximum EEPA(kcal/day) | 466.9 | ± | 116.6 | 375.3 | ± | 116.0 | 0.045 |
| maximum steps (step/day) | 24267 | ± | 5588 | 18074 | ± | 4659 | 0.004 |
| immobile time (%) | 84.1 | ± | 3.5 | 85.5 | ± | 1.9 | 0.242 |
| mean activity score (count/day) | 21.2 | ± | 14.5 | 17.6 | ± | 5.9 | 0.461 |
| mean activity (count/day) | 478.9 | ± | 85.4 | 423.6 | ± | 74.6 | 0.084 |
| diurnal activity (count/day) | 782.7 | ± | 163.4 | 684.5 | ± | 140.9 | 0.107 |
SD: standard deviation
TEE: total energy expenditure per day
EEPA: energy expenditure originating from physical activity per day
immobile time (%): amount of assumed sleep time that is spent immobile
mean activity score: the magnitude of activity on a per-epoch-basis during the sleep period