Table 3.
Breakdown for Different Activity Levels as Defined by Movement Frequency Cut-Points in 2121 Boys and 2336 Girls
| Boys |
Girls |
p | |||
|---|---|---|---|---|---|
| Mean | sd | Mean | sd | ||
| Total activity (100 counts/minute) | |||||
| Overall | 6.61 | 1.84 | 5.50 | 1.5 | <0.001 |
| Light | 4.76 | 1.00 | 4.25 | 0.87 | <0.001 |
| Moderate | 1.41 | 0.82 | 0.89 | 0.56 | <0.001 |
| Vigorous | 0.45 | 0.53 | 0.36 | 0.61 | <0.001 |
| Moderate and vigorous | 1.86 | 1.17 | 1.24 | 0.94 | <0.001 |
| Activity duration (minutes/day) | |||||
| Overall | 783.2 | 47.0 | 774.9 | 46.4 | <0.001 |
| Light | 754.6 | 47.6 | 756.6 | 46.3 | 0.1 |
| Moderate | 24.6 | 14.1 | 15.5 | 9.6 | <0.001 |
| Vigorous | 4.0 | 4.3 | 2.8 | 3.7 | <0.001 |
| Moderate and vigorous | 28.6 | 17.0 | 18.3 | 11.6 | <0.001 |
| Mean activity (100 counts/minute) | |||||
| Light | 5.0 | 1.1 | 4.4 | 0.9 | <0.001 |
| Moderate | 44.4 | 1.5 | 44.0 | 1.7 | <0.001 |
| Vigorous | 82.9 | 17.4 | 87.2 | 22.4 | <0.001 |
| Moderate and vigorous | 50.0 | 7.4 | 51.1 | 11.0 | <0.001 |
For each level, data show total activity (i.e., total counts divided by overall recording time), duration, and mean activity (i.e., total counts divided by duration).