Shigeru Sato1,2, Kakeru Hiraizumi2, Ryosuke Kiyono1,2, Taizan Fukaya1,3, Satoru Nishishita4,5,6, João Pedro Nunes7, Masatoshi Nakamura1,2. 1. Institute for Human Movement and Medical Sciences, Niigata University of Health and Welfare, Niigata City, Japan. 2. Department of Physical Therapy, Niigata University of Health and Welfare, Niigata City, Japan. 3. Department of Rehabilitation, Kyoto Kujo Hospital, Minami-ku, Japan. 4. Graduate School of Medicine, Kyoto University, Sakyo-ku, Kyoto, Japan. 5. Institute of Rehabilitation Science, Tokuyukai Medical Corporation, Toyonaka, Japan. 6. Kansai Rehabilitation Hospital, Tokuyukai Medical Corporation, Toyonaka, Japan. 7. Metabolism, Nutrition and Exercise Laboratory, Physical Education and Sport Center, Londrina State University, Londrina, Brazil.
Abstract
INTRODUCTION:Static stretching (SS) program are widely used in clinical and athletic settings. Many previous studies investigate the effect of SS program on muscle strength and muscle architecture (muscle thickness, and pennation angleh). However, no consensus has been reached about the effect of SS programs on muscle strength and muscle architecture. The aim of this study was to investigate the effects of 6-week SS programs performed at different weekly frequencies on muscle strength, muscle thickness and pennation angle at different ankle joint positions. METHODS: A total of 24 healthy male volunteers were performed 6-week SS programs (2,160 s of SS: 360 s/week*6 weeks) and were randomized to a group that performed SS once a week, or a group that performed SS three times per week. Total time under stretching was equated between groups. The muscle strength (maximum voluntary isometric contraction) at three different ankle joints were assessed before and after the 6-week SS program. In addition, muscle thickness and pennation angle were assessed by ultrasonography before and after 6-week SS program. RESULTS: There were no significant changes in all variables before and after the 6-week SS program, regardless of weekly frequency (p > 0.05). CONCLUSIONS: Our results suggest that 6-week SS programs do not increase muscle strength or muscle architecture at different ankle joint positions, regardless of stretching frequency; however, no negative effect on these outcomes was observed, contrary to evidence on the immediate, detrimental effects of SS.
RCT Entities:
INTRODUCTION: Static stretching (SS) program are widely used in clinical and athletic settings. Many previous studies investigate the effect of SS program on muscle strength and muscle architecture (muscle thickness, and pennation angleh). However, no consensus has been reached about the effect of SS programs on muscle strength and muscle architecture. The aim of this study was to investigate the effects of 6-week SS programs performed at different weekly frequencies on muscle strength, muscle thickness and pennation angle at different ankle joint positions. METHODS: A total of 24 healthy male volunteers were performed 6-week SS programs (2,160 s of SS: 360 s/week*6 weeks) and were randomized to a group that performed SS once a week, or a group that performed SS three times per week. Total time under stretching was equated between groups. The muscle strength (maximum voluntary isometric contraction) at three different ankle joints were assessed before and after the 6-week SS program. In addition, muscle thickness and pennation angle were assessed by ultrasonography before and after 6-week SS program. RESULTS: There were no significant changes in all variables before and after the 6-week SS program, regardless of weekly frequency (p > 0.05). CONCLUSIONS: Our results suggest that 6-week SS programs do not increase muscle strength or muscle architecture at different ankle joint positions, regardless of stretching frequency; however, no negative effect on these outcomes was observed, contrary to evidence on the immediate, detrimental effects of SS.
Authors: Masatoshi Nakamura; Hirotaka Ikezu; Shigeru Sato; Kaoru Yahata; Ryosuke Kiyono; Riku Yoshida; Kosuke Takeuchi; João Pedro Nunes Journal: Int J Environ Res Public Health Date: 2021-04-04 Impact factor: 3.390
Authors: Konstantin Warneke; Michael Keiner; Martin Hillebrecht; Stephan Schiemann Journal: Int J Environ Res Public Health Date: 2022-09-15 Impact factor: 4.614