Trait | Mean (SD) | h2*, % |
Age | 25.1 (4.5) | |
Weight, kg | 74.5 (10.4) | 85 |
Stature, cm | 180.2 (6.5) | 92 |
Fat-free mass, kg | 63.4 (6.5) | 90 |
Body mass index, kg/m2 | 22.9 (2.9) | 81 |
MBA mid thigh, cm2 | 171.8 (22.7) | 85 |
Isometric torque at 30° flexion, Nm | 147.9 (28.9) | 90 |
Isometric torque at 60° extension, Nm | 260.9 (53.5) | 78 |
Torque–length flexion, % | 81.2 (8.7) | 37 |
Torque–length extension, % | 61.4 (8.5) | 38 |
Sport index | 3.0 (0.7) | 50 |
*Estimated on the total Leuven Genes for Muscular Strength sample (n = 748).
Torque–length relationship for knee flexion and extension was quantified by calculating the ratio of torque at the joint angle in which the lowest force is produced (60° for flexion; 30° for extension) over torque at the joint angle with the highest force output (30° for flexion; 60° for extension), multiplied by 100.