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Endurance Exercise ...
Endurance Exercise Enhances the Effect of Strength Training on Muscle Fiber Size and Protein Expression of Akt and mTOR.
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- Kazior, Zuzanna (författare)
- Mittuniversitetet,Avdelningen för hälsovetenskap,NVC,Mittuniversitetet, Avdelningen för hälsovetenskap
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- Willis, Sarah J. (författare)
- Mittuniversitetet,Avdelningen för hälsovetenskap,NVC,Mittuniversitetet, Avdelningen för hälsovetenskap
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- Moberg, Marcus (författare)
- Gymnastik- och idrottshögskolan,Eva Blomstrands forskningsgrupp,Swedish Sch Sport & Hlth Sci, Stockholm, Sweden
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- Apró, William (författare)
- Gymnastik- och idrottshögskolan,Eva Blomstrands forskningsgrupp,Swedish Sch Sport & Hlth Sci, Stockholm, Sweden
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- Calbet, José A L (författare)
- Univ Las Palmas Gran Canaria, Dept Phys Educ, Las Palmas Gran Canaria, Spain
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- Holmberg, Hans-Christer (författare)
- Mittuniversitetet,Avdelningen för hälsovetenskap,NVC,Mittuniversitetet, Avdelningen för hälsovetenskap
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- Blomstrand, Eva (författare)
- Gymnastik- och idrottshögskolan,Eva Blomstrands forskningsgrupp,Swedish Sch Sport & Hlth Sci, Stockholm, Sweden
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(creator_code:org_t)
- 2016-02-17
- 2016
- Engelska.
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Ingår i: PLOS ONE. - : Public Library of Science (PLoS). - 1932-6203. ; 11:2
- Relaterad länk:
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https://doi.org/10.1...
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https://miun.diva-po... (primary) (Raw object)
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https://urn.kb.se/re...
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https://doi.org/10.1...
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https://urn.kb.se/re...
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https://urn.kb.se/re...
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Abstract
Ämnesord
Stäng
- Reports concerning the effect of endurance exercise on the anabolic response to strength training have been contradictory. This study re-investigated this issue, focusing on training effects on indicators of protein synthesis and degradation. Two groups of male subjects performed 7 weeks of resistance exercise alone (R; n = 7) or in combination with preceding endurance exercise, including both continuous and interval cycling (ER; n = 9). Muscle biopsies were taken before and after the training period. Similar increases in leg-press 1 repetition maximum (30%; P<0.05) were observed in both groups, whereas maximal oxygen uptake was elevated (8%; P<0.05) only in the ER group. The ER training enlarged the areas of both type I and type II fibers, whereas the R protocol increased only the type II fibers. The mean fiber area increased by 28% (P<0.05) in the ER group, whereas no significant increase was observed in the R group. Moreover, expression of Akt and mTOR protein was enhanced in the ER group, whereas only the level of mTOR was elevated following R training. Training-induced alterations in the levels of both Akt and mTOR protein were correlated to changes in type I fiber area (r = 0.55-0.61, P<0.05), as well as mean fiber area (r = 0.55-0.61, P<0.05), reflecting the important role played by these proteins in connection with muscle hypertrophy. Both training regimes reduced the level of MAFbx protein (P<0.05) and tended to elevate that of MuRF-1. The present findings indicate that the larger hypertrophy observed in the ER group is due more to pronounced stimulation of anabolic rather than inhibition of catabolic processes.
Ämnesord
- MEDICIN OCH HÄLSOVETENSKAP -- Hälsovetenskap -- Idrottsvetenskap (hsv//swe)
- MEDICAL AND HEALTH SCIENCES -- Health Sciences -- Sport and Fitness Sciences (hsv//eng)
Nyckelord
- Medicin/Teknik
- Medicine/Technology
Publikations- och innehållstyp
- ref (ämneskategori)
- art (ämneskategori)
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