Relationship between lateral differences in the cross-sectional area of the psoas muscle and curve running time

Journal of Physiological Anthropology
Nobuaki TottoriTadao Isaka

Abstract

The aim of this study was to investigate whether lateral differences in the cross-sectional areas of the hip and thigh muscles were related to curve sprinting time. Thirteen college students (10 men and 3 women; mean ± SD: age, 20.4 ± 1.7 years; height, 167.6 ± 8.9 cm; mass, 57.4 ± 5.4 kg) participated in this study. The participants were instructed to sprint along a circular track (23 m radius) in the counterclockwise and clockwise directions. Magnetic resonance imaging was used to measure the cross-sectional area of the psoas major, quadriceps femoris, and hamstring muscles. The symmetry index was used to evaluate the lateral differences in the cross-sectional area. The lateral difference was observed in the cross-sectional area (CSA) of the thigh muscles, not in the psoas major muscle. The sprint time was not significantly different between the counterclockwise (22.15 ± 2.27 s) and clockwise (22.13 ± 2.32 s) directions. No significant correlations were found between the symmetry index of the thigh muscles and the cross-directional differences in sprint time. However, the symmetry index of the psoas major muscle correlated significantly with the cross-directional difference in sprint time (r = -0.614, P = 0.026). These findin...Continue Reading

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Citations

Nov 15, 2017·Sports Biomechanics·Johannes FunkenWolfgang Potthast
Sep 24, 2019·Frontiers in Sports and Active Living·Shimpei FujitaMasaaki Sugita
Jan 21, 2021·Journal of Functional Morphology and Kinesiology·S Kyle TravisMichael H Stone

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