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Effects of exhausti...
Effects of exhaustive stretch-shortening cycle exercise on muscle blood flow during exercise
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- Laaksonen, Marko (author)
- Mittuniversitetet,Institutionen för hälsovetenskap (-2013)
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- Kivelä, R. (author)
- University of Jyväskylä, Jyväskylä, Finland
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- Kyröläinen, H. (author)
- University of Jyväskylä, Jyväskylä, Finland
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- Sipilä, S. (author)
- University of Jyväskylä, Jyväskylä, Finland
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- Selänne, H. (author)
- University of Jyväskylä, Jyväskylä, Finland
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- Lautamäki, R. (author)
- University of Turku, Turku, Finland
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- Nuutila, P. (author)
- University of Turku, Turku, Finland
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- Knuuti, J. (author)
- University of Turku, Turku, Finland
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- Kalliokoski, K.K. (author)
- University of Turku, Turku, Finland
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- Komi, P. V. (author)
- University of Jyväskylä, Jyväskylä, Finland
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(creator_code:org_t)
- Wiley, 2006
- 2006
- English.
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In: Acta Physiologica. - : Wiley. - 1748-1708 .- 1748-1716. ; 186:4, s. 261-270
- Related links:
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https://urn.kb.se/re...
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https://doi.org/10.1...
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Abstract
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- Abstract Aim: The influence of exhaustive stretch-shortening cycle exercise (SSC) on skeletal muscle blood flow (BF) during exercise is currently unknown. Methods: Quadriceps femoris (QF) BF was measured in eight healthy men using positron emission tomography before and 3 days after exhaustive SSC exercise. The SSC protocol consisted of maximal and submaximal drop jumps with one leg. Needle biopsies of the vastus lateralis muscles were taken immediately and 2 days after SSC for muscle endothelial nitric oxide synthase (eNOS) and interleukin-1-beta (IL-1beta) mRNA level determinations. Results: All subjects reported subjective muscle soreness after SSC (P < 0.001), which was well in line with a decrease in maximal isometric contraction force (MVC) and increase in serum creatine kinase activity (CK) (P = 0.018). After SSC muscle BF was 25% higher in entire QF (P = 0.043) and in its deep and superficial muscle regions, whereas oxygen uptake remained unchanged (P = 0.893). Muscle biopsies revealed increased IL-1beta (30 min: 152 +/- 75%, P = 0.012 and 2 days: 108 +/- 203%, P = 0.036) but decreased or unchanged eNOS (30 min; -21 +/- 57%, P = 0.050 and 2 days: +101 +/- 204%, P = 0.779) mRNA levels after SSC. Conclusion: It was concluded that fatiguing SSC exercise induces increased muscle BF during exercise, which is likely to be associated with pro-inflammatory processes in the exercised muscle.
Subject headings
- MEDICIN OCH HÄLSOVETENSKAP -- Hälsovetenskap -- Idrottsvetenskap (hsv//swe)
- MEDICAL AND HEALTH SCIENCES -- Health Sciences -- Sport and Fitness Sciences (hsv//eng)
Keyword
- skeletal muscle
- inflammation
- perfusion
- positron emission tomography
- stretch-shortening cycle
- Idrottsvetenskap
- Sports
- Idrott
Publication and Content Type
- ref (subject category)
- art (subject category)
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- By the author/editor
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Laaksonen, Marko
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Kivelä, R.
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Kyröläinen, H.
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Sipilä, S.
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Selänne, H.
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Lautamäki, R.
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show more...
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Nuutila, P.
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Knuuti, J.
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Kalliokoski, K.K ...
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Komi, P. V.
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- About the subject
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- MEDICAL AND HEALTH SCIENCES
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MEDICAL AND HEAL ...
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and Health Sciences
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and Sport and Fitnes ...
- Articles in the publication
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Acta Physiologic ...
- By the university
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Mid Sweden University