Table 1.
Basic characteristics of the participants, objectively measured physical activity, and sedentary behavior.
| Boys (n = 139) | Girls (n = 159) | |||||||
|---|---|---|---|---|---|---|---|---|
| Kenya (n = 59) | Japan (n = 80) | p | 95% CI | Kenya (n = 63) | Japan (n = 96) | p | 95% CI | |
| Basic characteristics | ||||||||
| Age (years) | 10.9 ± 0.7 | 10.0 ± 0.8 | <0.001 | 0.5, 1.0 | 11.0 ± 1.0 | 10.0 ± 0.8 | <0.001 | 0.8, 1.3 |
| Height (cm) | 142.0 ± 11.4 | 133.8 ± 5.7 | <0.001 | 6.3, 12.1 | 143.2 ± 8.2 | 132.9 ± 6.2 | <0.001 | 8.0, 12.5 |
| Weight (kg) | 33.6 ± 6.2 | 31.7 ± 7.4 | 0.123 | −0.5, 4.3 | 35.3 ± 6.3 | 30.0 ± 5.8 | <0.001 | 3.3, 7.2 |
| BMI | 16.7 ± 4.7 | 17.6 ± 3.3 | 0.207 | −2.2, 0.5 | 17.2 ± 2.4 | 16.9 ± 2.5 | 0.505 | −0.5, 1.1 |
| Accelerometer data | ||||||||
| Weekday | ||||||||
| SB (min/day) | 518.1 ± 109.0 | 485.1 ± 96.0 | 0.206 | −18.4, 84.3 | 566.0 ± 108.3 | 548.3 ± 85.9 | 0.428 | −26.3, 61.5 |
| LPA (min/day) | 246.0 ± 31.5 | 293.9 ± 48.5 | <0.001 | −71.7, −24.0 | 239.1 ± 28.6 | 255.8 ± 38.6 | 0.070 | −34.8, 1.36 |
| MPA (min/day) | 64.5 ± 16.7 | 54.5 ± 17.6 | 0.030 | 1.0, 19.2 | 56.9 ± 12.7 | 40.5 ± 12.1 | <0.001 | 10.4, 22.3 |
| VPA (min/day) | 27.8 ± 9.1 | 25.5 ± 13.9 | 0.508 | −4.6, 9.1 | 30.4 ± 12.0 | 17.0 ± 8.3 | <0.001 | 8.9, 17.7 |
| MVPA (min/day) | 92.3 ± 24.4 | 80.0 ± 29.4 | 0.102 | −2.5, 27.3 | 87.2 ± 21.3 | 57.5 ± 18.7 | <0.001 | 20.4, 39.0 |
| Step counts (steps/day) | 14,931 ± 3208 | 13,214 ± 3144 | 0.041 | 72, 3362 | 12,499 ± 2427 | 10,710 ± 2088 | 0.001 | 740, 2834 |
| Wear time (min/day) | 856.4 ± 114.8 | 858.9 ± 92.4 | 0.921 | −53.1, 48.0 | 892.3 ± 102.2 | 861.7 ± 93.0 | 0.191 | −15.5, 76.7 |
| Weekend | ||||||||
| SB (min/day) | 510.5 ± 79.4 | 548.6 ± 148.6 | 0.329 | −115.5, 39.3 | 519.1 ± 147.1 | 517.2 ± 108.1 | 0.950 | −58.1, 61.9 |
| LPA (min/day) | 236.2 ± 50.4 | 248.1 ± 63.0 | 0.493 | −46.1, 22.4 | 226.5 ± 57.1 | 229.9 ± 49.5 | 0.796 | −29.6, 22.8 |
| MPA (min/day) | 50.4 ± 20.6 | 39.8 ± 22.8 | 0.100 | −2.1, 23.3 | 43.8 ± 16.5 | 27.4 ± 12.5 | <0.001 | 9.5, 23.2 |
| VPA (min/day) | 21.7 ± 11.9 | 18.9 ± 20.4 | 0.597 | −7.8, 13.5 | 24.5 ± 11.8 | 12.0 ± 9.3 | <0.001 | 7.4, 17.5 |
| MVPA (min/day) | 72.2 ± 31.1 | 58.7 ± 40.8 | 0.228 | −8.6, 35.5 | 68.3 ± 26.3 | 39.5 ± 20.2 | <0.001 | 17.8, 39.9 |
| Step counts (steps/day) | 12,131 ± 3633 | 11,261 ± 7665 | 0.662 | −3090, 4831 | 10,158 ± 4017 | 8,721 ± 4289 | 0.192 | −734, 3606 |
| Wear time (min/day) | 818.9 ± 89.1 | 855.4 ± 162.8 | 0.394 | −121.5, 48.4 | 813.9 ± 136.2 | 786.6 ± 114.7 | 0.377 | −33.8, 88.5 |
Data are presented as mean ±SD; BMI: body mass index; SB: sedentary behavior; LPA: light-intensity physical activity; MPA: moderate-intensity physical activity; VPA: vigorous-intensity physical activity; MVPA: moderate-to-vigorous-intensity physical activity; 95% CI: 95% confidence Interval.