Acute effects of static stretching on the hamstrings using shear elastic modulus determined by ultrasound shear wave elastography: Differences in flexibility between hamstring muscle components

Manual Therapy
Hiroki UmegakiNoriaki Ichihashi

Abstract

Static stretching (SS) with hip flexion and knee extension is often used to stretch the hamstrings. However, it is unclear whether there are the differences in the acute effect of this SS maneuver on flexibility between each component of the hamstrings, namely the semitendinosus (ST), semimembranosus (SM), and biceps femoris (BF) muscles. The aims of this study were to investigate the acute effects of SS on the flexibility of the individual muscle components of the hamstrings, and to examine the difference in the acute effect of SS between these components using shear elastic modulus as the index of muscle flexibility. Twenty healthy men (age, 23.4 ± 2.3 years) volunteered for this study. The shear elastic modulus of the ST, SM and BF muscles were measured using ultrasound shear wave elastography before (PRE) and immediately after (POST) 5 min of SS. Measurements of shear elastic modulus were taken with the knee at 90° (slack position) and 45° (extension position) of flexion. In all muscles, the shear elastic modulus at both knee angles decreased significantly after SS. The percentage change in the shear elastic modulus from PRE to POST in the muscles at 45° of knee flexion was greatest in the SM. These results suggest that SS ...Continue Reading

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Citations

Dec 30, 2015·Journal of Electromyography and Kinesiology : Official Journal of the International Society of Electrophysiological Kinesiology·Eleftherios Kellis
Dec 17, 2015·Scandinavian Journal of Medicine & Science in Sports·N MiyamotoH Kanehisa
Apr 27, 2016·Journal of Sports Sciences·Noriaki IchihashiSatoko Ibuki
Sep 30, 2015·PloS One·Guillaume Le SantAntoine Nordez
Jun 14, 2017·Ultrasonography·Kelly Mônica Marinho E LimaLiliam Fernandes de Oliveira
Jun 25, 2019·Sports Biomechanics·Shusuke NojiriNoriaki Ichihashi
May 17, 2019·Journal of Sport Rehabilitation·Masatoshi NakamuraTomoichi Yoshida
Mar 23, 2018·Clinics in Orthopedic Surgery·Joong-Bae SeoJae-Sung Yoo
May 1, 2018·Journal of Ultrasound in Medicine : Official Journal of the American Institute of Ultrasound in Medicine·Kelly LimaLiliam F Oliveira
Aug 16, 2018·European Journal of Applied Physiology·Bruno MendesSandro R Freitas
Nov 16, 2016·AJR. American Journal of Roentgenology·Christoph A AgtenAndrea B Rosskopf
Jan 31, 2021·Journal of Ultrasound·Stacey M CornelsonNorman W Kettner
Mar 13, 2021·Journal of Sports Science & Medicine·Jun UmeharaNoriaki Ichihashi
Apr 25, 2021·Journal of Biomechanics·Jun UmeharaNoriaki Ichihashi
Jan 30, 2019·Journal of Strength and Conditioning Research·Sayaka NakaoNoriaki Ichihashi

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