Table 2.
Multiple linear regression values of FFM and BMD as dependent variables.
| Dependent variables | Independent variables | Goalkeepers | Field players | All | |||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| R | R2 | SEE | p | R | R2 | SEE | p | R | R2 | SEE | p | ||
| FFM (kg) | |||||||||||||
| Chronological age (years) | 0.78 | 0.60 | 1.09 | 0.00 | 0.63 | 0.40 | 1.00 | 0.00 | 0.64 | 0.41 | 1.04 | 0.00 | |
| Biological age (PHV) | 0.81 | 0.66 | 1.01 | 0.00 | 0.69 | 0.48 | 0.93 | 0.00 | 0.71 | 0.51 | 0.94 | 0.00 | |
| Weight (kg) | 0.78 | 0.60 | 1.08 | 0.00 | 0.79 | 0.62 | 0.79 | 0.00 | 0.78 | 0.61 | 0.84 | 0.00 | |
| Arm circumference (cm) | 0.66 | 0.43 | 1.29 | 0.00 | 0.72 | 0.52 | 0.89 | 0.00 | 0.70 | 0.50 | 0.94 | 0.00 | |
| BMD (g/cm2) | |||||||||||||
| Chronological age (years) | 0.91 | 0.82 | 0.08 | 0.00 | 0.78 | 0.62 | 0.12 | 0.00 | 0.80 | 0.64 | 0.11 | 0.00 | |
| Biological age (PHV) | 0.92 | 0.85 | 0.08 | 0.00 | 0.81 | 0.66 | 0.11 | 0.00 | 0.83 | 0.69 | 0.11 | 0.00 | |
| Weight (kg) | 0.90 | 0.82 | 0.09 | 0.00 | 0.84 | 0.71 | 0.10 | 0.00 | 0.84 | 0.70 | 0.10 | 0.00 | |
| Length of the foot (cm) | 0.79 | 0.62 | 0.12 | 0.00 | 0.68 | 0.47 | 0.14 | 0.00 | 0.67 | 0.45 | 0.14 | 0.00 | |
| D. Humerus (cm) | 0.82 | 0.68 | 0.11 | 0.00 | 0.69 | 0.47 | 0.14 | 0.00 | 0.70 | 0.50 | 0.13 | 0.00 | |
PHV, peak height velocity; C, circumference; D, diameter; BMD, bone mineral density; FFM, fat free mass; SEE, standard error of estimation.