Document Detail


Human skeletal muscle HSP70 response to physical training depends on exercise intensity.
MedLine Citation:
PMID:  10950444     Owner:  NLM     Status:  MEDLINE    
Abstract/OtherAbstract:
We have previously reported that HSP70 in human skeletal muscle could be induced by training. However, whether HSP70 induction is dependent upon exercise volume or exercise intensity remains unknown. The aim of the present study was to investigate the relationship between HSP70 and training intensity in rowers. Fourteen well-trained male rowers were divided into two groups (group A, n = 6; group B, n = 8). Group A performed higher intensity exercise during 1st phase, whereas group B performed higher intensity exercise during 2nd training phase. Training volume in 2nd phase increased in both groups. Both training intensity and volume were reduced in 3rd phase. Muscle samples were taken from m. vastus lateralis by fine needle biopsy before training, at the end of the 1st, 2nd and 3rd training phases. HSP70 was quantitatively determined using SDS-PAGE with silver stain. In group A, HSP70 increased significantly from 38 +/- 12 etag before training to 59 +/- 16 etag at the end of the lst training phase (loaded total protein 2.5microg), and decreased afterwards. In group B, HSP70 increase (from 36 +/- 11 etag to 50 +/- 13 etag) in the 1st phase was significantly smaller, there was a further increase of HSP70 in the 2nd phase (60 +/- 14 etag). At the end of the training, HSP70 decreased in both groups. Thus, HSP70 response to training seems to be dependent upon exercise intensity.
Authors:
Y Liu; W Lormes; C Baur; A Opitz-Gress; D Altenburg; M Lehmann; J M Steinacker
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Publication Detail:
Type:  Comparative Study; Journal Article; Research Support, Non-U.S. Gov't    
Journal Detail:
Title:  International journal of sports medicine     Volume:  21     ISSN:  0172-4622     ISO Abbreviation:  Int J Sports Med     Publication Date:  2000 Jul 
Date Detail:
Created Date:  2000-11-27     Completed Date:  2000-12-22     Revised Date:  2006-11-15    
Medline Journal Info:
Nlm Unique ID:  8008349     Medline TA:  Int J Sports Med     Country:  GERMANY    
Other Details:
Languages:  eng     Pagination:  351-5     Citation Subset:  IM    
Affiliation:
Abteilung Sport- und Rehabilitationsmedizin, Universität Ulm, Germany. yuefei.liu@medizin.uni-ulm.de
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MeSH Terms
Descriptor/Qualifier:
Adolescent
HSP70 Heat-Shock Proteins / analysis*,  biosynthesis
Humans
Male
Muscle, Skeletal / physiology*
Physical Endurance / physiology*
Sports / physiology
Chemical
Reg. No./Substance:
0/HSP70 Heat-Shock Proteins

From MEDLINE®/PubMed®, a database of the U.S. National Library of Medicine


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