LEG STIFFNESS DURING A LATERAL PLANT-AND-REVERSE MOVEMENT: A MALE-FEMALE COMPARISON

Abstract

This study aimed to apply the spring-mass model to a plant-and-reverse lateral movement. Using the model to calculate leg stiffness (KLeg), research has shown a link to running performance factors, but also to injury indicators. Perhaps similar links could be drawn for lateral movement. A comparison between men and women was also investigated. 3 male and 3 female collegiate tennis players performed a plant-andreverse movement on a force platform. The change in leg length was measured. KLeg was calculated (M: 49.02 ±12.8 kN/m; W: 23.46 ±5.6 kN/m). A Pearson r correlation ensured that the linear spring-mass model was properly applied to the braking phase. No differences were found, but the use of the spring-mass model for lateral movement was supported. Future research may now define how leg stiffness relates to performance and injury indicators for lateral movement.