Table 7.
The body composition in group of girls participating in a national athletics program and pair-matched control group of girls.
| The Assessed Parameters | Girls Participating in a National Athletics Program (n = 297) | Girls Non-Participating in a National Athletics Program (n = 297) | p-Value ** | ||
|---|---|---|---|---|---|
| Mean ± SD | Median (Minimum–Maximum) | Mean ± SD | Median (Minimum–Maximum) | ||
| Body cell mass (kg) | 18.19 ± 3.60 | 18.30 (8.10–32.90) |
17.85 ± 3.64 | 17.9 (8.90–28.10) |
0.2604 |
| Body cell mass (%) | 51.88 ± 3.16 | 51.80 * (40.30–69.30) |
51.08 ± 3.52 | 51.10 * (29.00–74.00) |
0.0022 |
| Body cell mass index (kg/m2) | 7.29 ± 1.18 | 7.20 * (4.30–15.60) |
7.58 ± 3.98 | 7.30 * (4.80–73.00) |
0.3080 |
| Fat-free mass (kg) | 34.92 ± 5.93 | 35.10 (17.10–53.80) |
34.92 ± 6.30 | 35.00 (17.90–51.20) |
0.9936 |
| Fat-free mass (%) | 74.50 ± 5.74 | 74.60 * (56.00–99.70) |
72.05 ± 6.27 | 71.70 (51.80–91.10) |
<0.0001 |
| Fat mass (kg) | 12.63 ± 6.07 | 11.80 * (0.20–77.00) |
14.14 ± 5.97 | 13.30 * (2.40–36.80) |
0.0007 |
| Fat mass (%) | 25.60 ± 5.84 | 25.50 * (0.30–44.00) |
27.97 ± 6.70 | 28.20 * (5.19–62.00) |
<0.0001 |
| Total body water (kg) | 26.92 ± 3.37 | 27.10 * (13.10–37.10) |
26.92 ± 3.57 | 26.80 * (13.70–36.00) |
0.7667 |
| Total body water (%) | 58.12 ± 6.66 | 57.80 * (40.50–96.90) |
56.22 ± 7.15 | 55.80 (39.50–73.60) |
0.0009 |
| Na/ K ratio (-) | 1.07 ± 0.12 | 1.10 * (0.80–1.50) |
1.06 ± 0.14 | 1.10 * (0.70–1.80) |
0.2863 |
| Extracellular water (kg) | 11.57 ± 1.94 | 11.70 (6.30–17.50) |
11.33 ± 1.94 | 11.30 (6.00–17.00) |
0.1355 |
| Extracellular water (%) | 42.74 ± 2.46 | 43.00 * (34.40–49.70) |
42.13 ± 2.31 | 42.30 * (33.50–48.30) |
0.0003 |
| Intracellular water (kg) | 15.36 ± 1.50 | 15.40 * (6.80–19.80) |
15.46 ± 1.74 | 15.50 * (7.40–20.00) |
0.4845 |
| Intracellular water (%) | 57.26 ± 2.46 | 57.00 * (50.30–65.60) |
57.89 ± 2.32 | 57.80 * (51.70–66.50) |
0.0002 |
| Muscle mass (kg) | 22.42 ± 4.38 | 22.50 (10.10–40.00) |
21.98 ± 4.39 | 22.00 (11.00–34.20) |
0.2316 |
| Muscle mass (%) | 47.48 ± 5.45 | 47.50 * (5.40–83.80) |
45.19 ± 5.37 | 45.20 * (23.90–81.10) |
<0.0001 |
* Nonparametric distribution (verified using Shapiro-Wilk test; p ≤ 0.05); ** compared using t-Student test (for parametric distribution) and Mann-Whitney U test (for nonparametric distribution).