Influence of Constant Torque Stretching at Different Stretching Intensities on Flexibility and Mechanical Properties of Plantar Flexors

Oba, Kensuke; Samukawa, Mina; Nakamura, Kentaro; Mikami, Kentaro; Suzumori, Yuki; Ishida, Yuko; Keeler, Nathalie; Saitoh, Hiroshi; Yamanaka, Masanori; Tohyama, Harukazu

Influence of Constant Torque Stretching at Different Stretching Intensities on Flexibility and Mechanical Properties of Plantar Flexors

Oba, Kensuke; Samukawa, Mina; Nakamura, Kentaro et al.

Journal of strength and conditioning research, 2021, 35(3), 709-714

Permalink : https://hdl.handle.net/2115/84204

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アクセス権	open access
URI	https://hdl.handle.net/2115/84204
タイトル	Influence of Constant Torque Stretching at Different Stretching Intensities on Flexibility and Mechanical Properties of Plantar Flexors
著者	Oba, Kensuke ; Samukawa, Mina ; Nakamura, Kentaro ; Mikami, Kentaro ; Suzumori, Yuki ; Ishida, Yuko ; Keeler, Nathalie ; Saitoh, Hiroshi ; Yamanaka, Masanori ; Tohyama, Harukazu
著者名 Oba, Kensuke
e-Rad_Researcher 40360953 著者名 Samukawa, Mina
著者名 Nakamura, Kentaro
著者名 Mikami, Kentaro
著者名 Suzumori, Yuki
著者名 Ishida, Yuko
著者名 Keeler, Nathalie
著者名 Saitoh, Hiroshi
e-Rad_Researcher 40166757 著者名 Yamanaka, Masanori
e-Rad_Researcher 60301884 著者名 Tohyama, Harukazu
言語	英語
キーワード	stretching intensity
	range of motion
	stiffness
発行日	2021-03
出版者	Lippincott Williams & Wilkins (LWW)
収録物名	Journal of strength and conditioning research
巻(号)	35(3)
ページ	709-714
抄録	Oba, K, Samukawa, M, Nakamura, K, Mikami, K, Suzumori, Y, Ishida, Y, Keeler, N, Saitoh, H, Yamanaka, M, and Tohyama, H. Influence of constant torque stretching at different stretching intensities on flexibility and mechanical properties of plantar flexors. J Strength Cond Res 35(3): 709-714, 2021-The purpose of this study was to examine the effects of constant torque stretching (CTS) at different stretching intensities on the maximal range of motion (ROM) and muscle-tendon unit (MTU) stiffness of plantar flexors. Fourteen healthy men performed 4 trials of differing stretch intensities: no stretching (control), 50, 75, and 100%. Stretch intensity was defined as maximum passive resistive torque predetermined at a familiarization trial. Each stretch trial consisted of 5 sets of 60-second CTS at the designated stretch intensity. Both maximal ROM and passive resistive torque were assessed during passive dorsiflexion, and MTU stiffness was calculated using the torque-angle curves measured before and after CTS. There were no significant differences in maximal ROM or MTU stiffness at the baseline condition. After the intervention, significantly greater maximal ROM and significantly lower MTU stiffness were observed in the 100% CTS condition than the control condition, whereas there were no significant differences between the submaximal intensity condition (i.e., 50 or 75% intensity) and the control condition. Therefore, our findings suggest that maximal intensity stretching is the most effective approach for improving both flexibility and MTU stiffness with CTS.
資源タイプ	学術雑誌論文
出版タイプ	Accepted Manuscript
権利情報	This is a non-final version of an article published in final form in Oba, Kensuke1; Samukawa, Mina2; Nakamura, Kentaro2; Mikami, Kentaro3; Suzumori, Yuki1; Ishida, Yuko4; Keeler, Nathalie5; Saitoh, Hiroshi6; Yamanaka, Masanori2; Tohyama, Harukazu2 Influence of Constant Torque Stretching at Different Stretching Intensities on Flexibility and Mechanical Properties of Plantar Flexors, Journal of Strength and Conditioning Research: March 2021 - Volume 35 - Issue 3 - p 709-714 doi: 10.1519/JSC.0000000000002767.
PISSN	1064-8011
関連情報 (isVersionOf)	出版社版DOI https://doi.org/10.1519/JSC.0000000000002767