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The effects of static stretching programs on muscle strength and muscle architecture of the medial gastrocnemius

Sato, Shigeru ; Hiraizumi, Kakeru ; Kiyono, Ryosuke ; Fukaya, Taizan ; Nishishita, Satoru ; Nunes, João Pedro ; Nakamura, Masatoshi Di Giminiani, Riccardo

PloS one, 2020-07, Vol.15 (7), p.e0235679-e0235679 [Periódico revisado por pares]

San Francisco: Public Library of Science

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  • Título:
    The effects of static stretching programs on muscle strength and muscle architecture of the medial gastrocnemius
  • Autor: Sato, Shigeru ; Hiraizumi, Kakeru ; Kiyono, Ryosuke ; Fukaya, Taizan ; Nishishita, Satoru ; Nunes, João Pedro ; Nakamura, Masatoshi
  • Di Giminiani, Riccardo
  • Assuntos: Ankle ; Architecture ; Biology and Life Sciences ; Contraction ; Evaluation ; Group dynamics ; Joints (anatomy) ; Medicine and Health Sciences ; Muscle contraction ; Muscle strength ; Muscular strength ; Physical therapy ; Physiological aspects ; Rehabilitation ; Research and Analysis Methods ; Social Sciences ; Stretching ; Studies ; Thickness
  • É parte de: PloS one, 2020-07, Vol.15 (7), p.e0235679-e0235679
  • Notas: ObjectType-Article-1
    SourceType-Scholarly Journals-1
    ObjectType-Feature-2
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    Competing Interests: The authors have read the journal’s policy and have the following competing interests: SN (Satoru Nishishita) is a paid employee of Tokuyukai Medical Corporation. This does not alter our adherence to PLOS ONE policies on sharing data and materials. There are no patents, products in development or marketed products associated with this research to declare.
  • Descrição: 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.
  • Editor: San Francisco: Public Library of Science
  • Idioma: Inglês
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  • Realização: ABCD-USP USP   Logos de Redes Sociais: Freepik

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