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J Phys Ther Sci. 2016 Sep;28(9):2468-2469. Epub 2016 Sep 29.

Comparison of hamstring-to-quadriceps ratio between accelerating and decelerating sections during squat exercise.

Author information

1
Department of Physical Therapy, College of Biomedical Science and Engineering, Inje University, Republic of Korea.

Abstract

[Purpose] The aim of this study was to compare hamstring-to-quadriceps ratio between the accelerating and decelerating sections for anterior cruciate ligament protection during squat exercise. [Subjects and Methods] Nine asymptomatic males were enrolled in this study. The hamstring (medial part) and quadriceps (rectus femoris) muscle activities during squat exercise were measured, and the squat exercises were classified into two sections (accelerating and decelerating) by using an accelerometer. [Results] The hamstring-to-quadriceps ratio was significantly higher in the decelerating section than in the accelerating section during the squat exercise. [Conclusion] Application of an increasing decelerating section strategy during the squat exercise can prevent damage in patients with a weakened anterior cruciate ligament due to sports activities.

KEYWORDS:

Anterior cruciate ligament; H/Q ratio; Squat exercise

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