THE PREDICTIVE ROLE OF TORQUE ON SINGLE LEG JUMP PERFORMANCE IN ECCENTRIC-BASED ACTIVATION INTERVENTION: COMPARISON OF ANGULAR VELOCITY AND LEG DOMINANCE (A PILOT STUDY)

Sümeyye Genç; Atakan Boztaş; Fatih Çatıkkaş; Erkan Günay

doi:10.61962/bsd.1737375

THE PREDICTIVE ROLE OF TORQUE ON SINGLE LEG JUMP PERFORMANCE IN ECCENTRIC-BASED ACTIVATION INTERVENTION: COMPARISON OF ANGULAR VELOCITY AND LEG DOMINANCE (A PILOT STUDY)

Authors : Sümeyye Genç, Atakan Boztaş, Fatih Çatıkkaş, Erkan Günay

Pages : 168-176

Doi:10.61962/bsd.1737375

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Publication Date : 2025-12-29

Article Type : Research Paper

Abstract :The aim of this study was to examine the predictive role of torque on single leg jump performance in terms of angular velocity and leg dominance in eccentric-based activation intervention. The study was conducted in three sessions with 8 male participants. In the first session, anthropometric measurements were taken, the dominant leg was identified, and then a vertical jump test and a familiarization process for eccentric contractions were applied. The other two sessions were performed 48 hours apart and in randomized order. In the second session, participants first performed a single set of 5 repetitions of maximal eccentric contractions at an angular velocity of 60°/s with the dominant leg, followed by a 7-min transition phase and then participated in the vertical jump test with the same leg. Afterwards, the same protocol was performed with the non-dominant leg at 150°/s. In the third session, eccentric contractions were performed with the dominant leg at 150°/s, followed by a 7-minute transition phase and a jump test. Finally, the same procedure was repeated with the non-dominant leg at 60°/s. Linear regression analyses were performed to determine the predictive role of dominant and non-dominant leg torque on jump height at 60°/s and 150°/s angular velocities. However, the models were not statistically significant at both speeds (p > .05). Although the highest predictive value was obtained for the non-dominant leg at 60°/s velocity (R² = .232), this model also did not reach significance. The results show that the power of eccentric torque to predict jump performance is limited. On the other hand, there seems to be a potential for angular velocity differences (especially the lower velocity used in the non-dominant leg) to produce a potentiation effect.
Keywords : Eksantrik kasılma, açısal hız, tork, dominant ve non-dominant bacak

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