Bilateral difference in hamstrings to quadriceps ratio in healthy males and females

Physical Therapy in Sport : Official Journal of the Association of Chartered Physiotherapists in Sports Medicine
Pui W Kong, Stephen F Burns

Abstract

To compare the isometric and isokinetic hamstrings to quadriceps (H:Q) ratio 1) between the dominant (D) and non-dominant (ND) legs, and 2) between healthy males and females. Cross-sectional. University research laboratory. Quadriceps and hamstrings strength were assessed by maximum isometric contractions at six angles (40 degrees, 50 degrees, 60 degrees, 70 degrees, 80 degrees, 90 degrees) and concentric contractions at three angular velocities (60 degrees s(-1), 180 degrees s(-1), 300 degrees s(-1)). Forty physically active adults (25 males). Peak isometric and isokinetic torques of the quadriceps and hamstrings, and the corresponding H:Q ratios. Isometric H:Q ratio increased with greater knee extension (P<0.001), with overall a higher ratio in the D leg (P<0.001). Isokinetic H:Q ratio increased with angular velocity (P<0.001), with a higher ratio in the D leg (P<0.05). Neither isometric nor isokinetic H:Q ratios differed between males and females. When setting rehabilitation goals, it may be appropriate to adjust the H:Q ratio and leg strength based on the uninvolved leg with consideration of leg dominance. Gender-related differences do not explain the discrepancy in the literature regarding bilateral differences in the H:Q ...Continue Reading

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Citations

Apr 17, 2012·Archives of Gerontology and Geriatrics·Lucy AirdMaria Stokes
Apr 19, 2011·Physical Therapy in Sport : Official Journal of the Association of Chartered Physiotherapists in Sports Medicine·Katharina Lanshammar, Eva L Ribom
Jun 10, 2015·Journal of Sports Sciences·Timothy M McGrathDamian Smith
Mar 1, 2012·Journal of Sports Sciences·Marilia Dos Santos AndradeAntonio Carlos Da Silva
Jul 25, 2013·Journal of Sports Sciences·Chia-Wei LinCheng-Feng Lin
Feb 6, 2018·Journal of Strength and Conditioning Research·Samantha N MadoniAndrew J Galpin
Jan 10, 2018·PloS One·Jaroslaw KabacinskiLechoslaw Bogdan Dworak
Oct 28, 2017·Journal of Strength and Conditioning Research·Olivier MaurelliJacques Prioux
Sep 14, 2012·Der Ophthalmologe : Zeitschrift der Deutschen Ophthalmologischen Gesellschaft·K SpaniolT Stupp
Jun 12, 2019·Research Quarterly for Exercise and Sport·Zhong M TayPui W Kong
Apr 4, 2021·International Journal of Environmental Research and Public Health·Petr MiratskyTomas Maly
Dec 15, 2020·Journal of Human Kinetics·Przemysław PietraszewskiAdam Maszczyk
Jul 27, 2021·Frontiers in Physiology·José AfonsoRodrigo Ramirez-Campillo

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