Relationship between Hip and Knee Strength and Knee Valgus Angle during Drop Jump in Elite Female Athletes

purpose: the purpose of this study was to investigate the relationship between hip and kneestrength with knee valgus angle during drop jump in elite female athletes. methods: forty female athletes (mean ± sd age, 21.5 ± 1.99 years; height, 169.08 ± 8.25 cm;body mass, 61.05 ± 10.06 kg) participated in this study. isometric hip and knee muscles strengthwere evaluated using standard clinical procedures and a handheld dynamometer. knee valgusangle was assessed using a 6-camera motion analysis system during a drop jump task. pearsoncorrelation analyses were performed to determine the relationship between hip and knee musclesstrength and knee valgus angle at initial contact (p≤0.05). results: hip abductor strength and knee flexor-extensor ratio were found to be negativelycorrelated with knee valgus angle (r = –0.229, p = 0.04 and r = –0.446, p = 0.002, respectively). conclusion: no relationship between measure of hip external rotation strength and kneevalgus angle was observed (p = 0.39). strength training of the hip and knee musculaturemay still need to be addressed in prevention programs, but it also should be combined withteaching proper