The Effect of Two Stretching Methods on the Elongation Portion of the Biceps Femoris

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  • NAKAMURA Masatoshi
    Institute for Human Movement and Medical Sciences, Niigata University of Health and Welfare
  • IKEZOE Tome
    Human Health Sciences, Graduated School of Medicine, Kyoto University
  • NISHISHITA Satoru
    Human Health Sciences, Graduated School of Medicine, Kyoto University Institute of Rehabilitation Science, Tokuyukai Medical Corporation Kansai Rehabilitation Hospital, Tokuyukai Medical Corporation
  • UMEHARA Jun
    Human Health Sciences, Graduated School of Medicine, Kyoto University
  • ICHIHASHI Noriaki
    Human Health Sciences, Graduated School of Medicine, Kyoto University

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Other Title
  • ストレッチング方法の違いにより大腿二頭筋の伸長部位を変化させることができるか？
  • ─せん断波エラストグラフィー機能を用いた検討─
  • An Ultrasonic Shear Wave Elastography Study

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Abstract

<p>Purpose: To investigate the effects of two stretching methods on the elongation of different portions of the biceps femoris (BF).</p><p>Methods: Fifteen healthy men volunteered for this study. The shear elastic moduli of the proximal, middle, and distal portions of the BF were measured using ultrasonic shear-wave elastographic imaging at rest (supine position with 90° knee flexion and 90° hip flexion) and at two stretching positions (knee extension with 90° hip flexion [KE] and hip flexion with full knee extension [SLR]).</p><p>Results: A post-hoc test indicated that the shear elastic moduli of all portions were higher in both the KE and SLR positions than at rest. However, there were no significant differences between the KE and SLR for all portions. In addition, split-plot analysis of variance showed no significant interaction effect in the rate changes of the shear elastic modulus (three portions × two stretching positions).</p><p>Conclusion: Our results suggest that both the KE and SLR stretching positions could effectively elongate all portions of the BF and that there is no significant difference in the elongation of different portions between both the stretching methods.</p>

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