From: Effect of maturation on muscle quality of the lower limb muscles in adolescent boys
Prepubescent | Pubescent | Effect size (r) | |
---|---|---|---|
Age, years | 13.3 ± 0.5 | 14.0 ± 0.6* | 0.49 |
Height, cm | 152.7 ± 8.5 | 163.6 ± 6.5* | 0.59 |
Weight, kg | 42.2 ± 8.0 | 51.7 ± 7.2* | 0.53 |
BMI, kg/m 2 | 18.0 ± 1.8 | 19.2 ± 1.5* | 0.36 |
Percent body fat, % | 13.6 ± 5.2 | 15.4 ± 3.9* | 0.20 |
LBM, kg | 36.2 ± 5.2 | 43.5 ± 4.7* | 0.60 |
Limb length, cm | |||
Femur | 36.7 ± 2.9 | 38.6 ± 2.1* | 0.10 |
Lower leg | 36.1 ± 2.5 | 38.2 ± 1.8* | 0.45 |
Muscle thickness, cm | |||
KE | 4.0 ± 0.5 | 4.6 ± 0.5* | 0.49 |
PF | 5.8 ± 0.5 | 6.4 ± 0.5* | 0.53 |
Muscle volume index, cm 3 | |||
KE | 930 ± 390 | 1318 ± 310* | 0.51 |
PF | 649 ± 152 | 850 ± 139* | 0.55 |
Maximal voluntary joint torque, Nm | |||
KET | 119.5 ± 36.7 | 160.0 ± 39.0* | 0.47 |
PFT | 78.6 ± 26.5 | 111.7 ± 34.2* | 0.46 |
TQ/MV, Nm/cm 3 | |||
KET/MV | 0.14 ± 0.05 | 0.13 ± 0.03* | 0.20 |
PFT/MV | 0.12 ± 0.03 | 0.13 ± 0.03 | 0.15 |