Flexibility or muscle length?
Gajdosik
R L
RL
D004548:Elasticity; D006801:Humans; D007719:Knee Joint / Q000502:physiology*; D018482:Muscle, Skeletal / Q000502:physiology*; D016059:Range of Motion, Articular / Q000502:physiology*; D015203:Reproducibility of Results