Table 3.
Descriptive and anthropometric characteristics of participants by individual school and overall (mean (SD) or percentage).
| 1. Class (n = 93) |
2. Choice (n = 73) |
3. No Club (n = 68) |
All Girls (n = 234) |
|
|---|---|---|---|---|
| Age (y) | 14.0 (0.3) | 14.0 (0.3) | 14.1 (0.3) | 14.0 (0.3) |
| Stature (cm) | 160.7 (5.8) | 160.4 (5.7) | 161.7 (9.5) | 160.9 (6.9) |
| Body Mass (kg) | 56.8 (10.2) | 55.4 (8.8) | 57.8 (12.1) | 56.7 (10.5) |
| BMI (kg∙m2) | 22.4 (5.9) | 21.7 (3.2) | 22.4 (6.6) | 22.2 (5.6) |
| BMI z-Score | 0.7 (1.0) | 0.7 (0.9) | 0.6 (1.4) | 0.7 (1.1) |
| WHtR | 0.46 (0.04) | 0.44 (0.04) | 0.46 (0.07) | 0.45 (0.05) |
| Maturity Offset (y) | 1.8 (0.4) | 1.8 (0.4) | 1.9 (0.6) | 1.8 (0.5) |
| Weight Status (%) | ||||
| Underweight | 2.2 | 5.5 | 9.2 | 5.2 |
| Normal Weight | 70.0 | 67.3 | 61.6 | 66.7 |
| Overweight/Obese | 27.8 | 27.3 | 29.2 | 28.1 |
| IMD Score | 6.6 (2.6) | 5.7 (3.0) | 6.8 (2.0) | 6.4 (2.6) |
| MVPA (min·day−1) | 23.3 (11.9) | 26.4 (13.3) | 32.2 (12.9) | 26.9 (13.1) |
| MVPA Guidelines (%) | 0 | 3.1 | 3.3 | 1.9 |
Notes: BMI = body mass index, WHtR = waist-to-height-ratio, Maturity Offset = predicated time from peak height velocity, IMD = indices of multiple deprivation, MVPA levels = mean moderate-to-vigorous PA (MVPA) level in minutes at baseline, MVPA Guidelines = % of girls meeting the recommended daily 60 min of MVPA at baseline.