| No effect of seasonal variation in training load on immuno-endocrine responses to acute exhaustive exercise. | |
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MedLine Citation:
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PMID: 11374427 Owner: NLM Status: MEDLINE |
Abstract/OtherAbstract:
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This study was designed to examine the relationship between seasonal changes in training and competition load, and changes in leukocyte subsets, stress hormones, and interleukin-6 (IL-6) in response to a standardised bout of endurance exercise. In addition, changes in mood states were monitored. Ten male, international Nordic skiers, age 20-29, maximal oxygen uptake 70-82 ml x kg(-1) x min(-1) performed the same incremental treadmill tests to exhaustion at the same time of day (+/-1 h), during the competitive season (in-season HI test) and the recovery season (off-season LO test). The subject filled out a training and competition log (TC score) for three weeks prior to each test and a 65-item Profile of Mood State (POMS) test on arrival at the laboratory. Venous blood for haematological, hormonal, and IL-6 analysis was drawn before and at 0, 15, 30, 60, 120 and 240 min after the test. TC score was more than twice as high during the competitive season (16.0 +/- 3.9) compared to the off-season period (7.0 +/- 4.4). An ANOVA procedure for repeated measures showed no difference in exercise induced changes in concentrations of neutrocytes, lymphocytes, epinephrine, ACTH or cortisol between the in-season HI and off-season LO tests; however, norepinephrine and the IL-6 concentrations were elevated at the in-season HI test compared to the off-season LO test. There were no significant differences in POMS global mood score or sub-scores between the in-season HI and the off-season LO tests. Thus, in a group of elite Nordic skiers, we conclude that a doubling of the training and competition load during the winter season does not alter the leukocyte and stress hormone responses to an incremental exercise test to exhaustion. |
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Authors:
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O Ronsen; K Holm; H Staff; P K Opstad; B K Pedersen; R Bahr |
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Publication Detail:
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Type: Journal Article; Research Support, Non-U.S. Gov't |
Journal Detail:
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Title: Scandinavian journal of medicine & science in sports Volume: 11 ISSN: 0905-7188 ISO Abbreviation: Scand J Med Sci Sports Publication Date: 2001 Jun |
Date Detail:
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Created Date: 2001-05-25 Completed Date: 2001-09-27 Revised Date: 2006-11-15 |
Medline Journal Info:
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Nlm Unique ID: 9111504 Medline TA: Scand J Med Sci Sports Country: Denmark |
Other Details:
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Languages: eng Pagination: 141-8 Citation Subset: IM |
Affiliation:
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Norwegian National Sports Center, Oslo. |
Export Citation:
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APA/MLA Format Download EndNote Download BibTex |
| MeSH Terms | |
Descriptor/Qualifier:
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Adaptation, Physiological
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physiology Adaptation, Psychological Adrenal Cortex Hormones / blood Adrenocorticotropic Hormone / blood Adult Endocrine System / physiology* Exercise / physiology*, psychology Humans Immune System / physiology* Interleukin-6 / blood Leukocytes / metabolism Male Neutrophils / metabolism Physical Education and Training / methods* Seasons* Skiing / physiology*, psychology |
| Chemical | |
Reg. No./Substance:
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0/Adrenal Cortex Hormones; 0/Interleukin-6; 9002-60-2/Adrenocorticotropic Hormone |
From MEDLINE®/PubMed®, a database of the U.S. National Library of Medicine
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