Table 1 Baseline participant characteristics for each study sample (N = 278 participants)
| Â | Sample | |||
|---|---|---|---|---|
Training | Model selection | Testing (epoch level) | Testing (participant-season level) | |
Participant characteristics | ||||
 Number of participants, n | 156 | 38 | 84 | 65 |
 Age yr, Mean (SD) | 10.5 (0.7) | 10.4 (0.6) | 10.5 (0.7) | 10.5 (0.6) |
 Female, n (%) | 79 (50.6%) | 18 (47.4%) | 44 (52.5%) | 37 (56.9%) |
 BMIz, Mean (SD) | 0.59 (1.15) | 0.27 (1.09) | 0.69 (1.17) | 0.51 (1.16) |
 Low/middle socioeconomic status, n (%) | 63 (40.4%) | 13 (34.3%) | 29 (34.5%) | 21 (32.3%) |
Seasons | ||||
 Number of participant-seasons, n | 414 | 102 | 202 | 127 |
 Fall, n (%) | 90 (21.7) | 19 (18.6) | 44 (21.8) | 24 (18.9) |
 Winter, n (%) | 120 (29.0) | 26 (25.5) | 57 (28.2) | 44 (34.6) |
 Spring, n (%) | 98 (23.7) | 26 (25.5) | 38 (18.8) | 25 (19.7) |
 Summer, n (%) | 106 (25.6) | 31 (30.4) | 63 (31.2) | 34 (26.8) |