Isometric exercise

Physics

Sprint

Mathematics

Physiology

Political science

Physical therapy

Football

Vertical jump

Jumping

Jump

Quantum mechanics

Orthodontics

Football players

Medicine

Physical medicine and rehabilitation

International Journal of Sport and Health Science

This study aimed to elucidate the relationships among unilateral stance isometric mid-thigh pull (IMTPUni) variables, sprint times, and single-leg jump performance in collegiate football players. A total of twenty male collegiate football players participated in this study. Participants were instructed to perform IMTPUni by pulling a fixed bar on a force plate to measure the ground reaction force (GRF). Based on the GRF, two variables were calculated; force output from onset of pull (F100) and peak force (PF). Sprint performance was measured by light gates over a distance of 30m. The height of single-leg countermovement jumps (CMJ) and the single-leg drop jump index which was the jump height divided by contact time was measured for single-leg jump performance. The legs were divided by two types of definition such as kicking/supporting legs and dominant/non-dominant leg based on PF. As the result, sprint times were significantly correlated with single-leg CMJ only in the kicking and dominant legs. On the other hand, PF of IMTPUni was significantly correlated with sprint times in the supporting leg as well as both the dominant and non-dominant legs. However, no significant correlations were found between F100 and sprint time in both definitions. Therefore, the PF of IMTPUni as well as CMJ can be used as an effective predictor of strength for sprint.

Relationship among Unilateral Stance Isometric Mid-thigh Pull Variables, Sprint Times, and Jump Performance in Collegiate Football Players