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Comparison among three different intensities of eccentric contractions of the elbow flexors resulting in the same strength loss at one day post-exercise for changes in indirect muscle damage markers.
Chen, Trevor C; Huang, Guan-Ling; Hsieh, Chung-Chan; Tseng, Kuo-Wei; Tseng, Wei-Chin; Chou, Tai-Ying; Nosaka, Kazunori.
Afiliación
  • Chen TC; Department of Physical Education, National Taiwan Normal University, P.O. Box 97-71, Wenshan Wansheng, Taipei City, 11699, Taiwan. tcchen@ntnu.edu.tw.
  • Huang GL; Department of Physical Education, National Taiwan Normal University, P.O. Box 97-71, Wenshan Wansheng, Taipei City, 11699, Taiwan.
  • Hsieh CC; Department of Physical Education, National Taiwan Normal University, P.O. Box 97-71, Wenshan Wansheng, Taipei City, 11699, Taiwan.
  • Tseng KW; Department of Exercise and Health Sciences, University of Taipei, Taipei City, Taiwan.
  • Tseng WC; Department of Exercise and Health Sciences, University of Taipei, Taipei City, Taiwan.
  • Chou TY; Department of Athletic Performance, National Taiwan Normal University, Taipei City, Taiwan.
  • Nosaka K; Centre for Exercise and Sports Science Research, School of Medical and Health Sciences, Edith Cowan University, Joondalup, WA, Australia.
Eur J Appl Physiol ; 120(1): 267-279, 2020 Jan.
Article en En | MEDLINE | ID: mdl-31811382
PURPOSE: The present study compared three different intensity elbow flexor eccentric exercises resulting in the same magnitude of maximal voluntary isomeric contraction torque (MVC) decrease at 1 day post-exercise for changes in several indirect markers of muscle damage and proprioception. METHODS: Sedentary young men performed eccentric contractions of the elbow flexors using a dumbbell corresponding to either 10%, 50% or 100% of MVC to induce ~ 20% decrease in MVC at 1 day post-exercise (n = 12/group). MVC, range of motion (ROM), upper arm circumference (CIR), muscle soreness, plasma creatine kinase (CK) activity, and proprioception measures (force match, joint position sense) were taken before to 5 days after exercise, and the changes were compared among the groups. RESULTS: MVC and ROM recovered faster (P < 0.05) in the order of 10% (e.g., 3 days post-exercise: - 3 ± 4%, 0 ± 1%), 50% (- 12 ± 3%, - 3 ± 2%) and 100% group (- 16 ± 4%, - 5 ± 1%). Peak CIR, muscle soreness and CK activity were smaller for 10% (Δ3 ± 1 mm, 26 ± 10 mm, 1049 ± 316 IU/L) than 50% (Δ6 ± 2 mm, 36 ± 14 mm, 1473 ± 429 IU/L) and 100% groups (Δ8 ± 2 mm, 47 ± 15 mm, 2104 ± 929 IU/L). The proprioception measures recovered faster (P < 0.05) for 10% followed by 50% then 100% group. The recovery rate of MVC from immediately to 1 day post-exercise was correlated (P < 0.05) with the changes in the muscle damage and proprioception markers. CONCLUSION: These results suggest that the MVC at 1 day post-exercise does not necessarily predict the changes in muscle damage markers in the following days, but the MVC recovery rate in the first 24 h reflects the magnitude of muscle damage better.
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Texto completo: 1 Colección: 01-internacional Base de datos: MEDLINE Asunto principal: Fuerza Muscular / Mialgia / Acondicionamiento Físico Humano / Contracción Isométrica Tipo de estudio: Prognostic_studies Límite: Adult / Humans / Male Idioma: En Revista: Eur J Appl Physiol Asunto de la revista: FISIOLOGIA Año: 2020 Tipo del documento: Article País de afiliación: Taiwán Pais de publicación: Alemania
Texto completo
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Texto completo: 1 Colección: 01-internacional Base de datos: MEDLINE Asunto principal: Fuerza Muscular / Mialgia / Acondicionamiento Físico Humano / Contracción Isométrica Tipo de estudio: Prognostic_studies Límite: Adult / Humans / Male Idioma: En Revista: Eur J Appl Physiol Asunto de la revista: FISIOLOGIA Año: 2020 Tipo del documento: Article País de afiliación: Taiwán Pais de publicación: Alemania