Linked Life Data

1490214

Source:http://linkedlifedata.com/resource/pubmed/id/1490214

Statements in which the resource exists as a subject.
PredicateObject
rdf:type
lifeskim:mentions
pubmed:issue
4
pubmed:dateCreated
1993-3-2
pubmed:abstractText
Performance and hormones were determined in eight middle- and nine long-distance runners after an increase in training volume (ITV, February 1989) or intensity (ITI, February 1990). Seven runners participated in both studies. The objective was to cause an overtraining syndrome. The mean training volume of 85.9 km week-1 increased within 3 weeks to 176.6 km week-1 during ITV and 96-98% of training volume was performed as long-distance runs at mean(s.d.) 67(8)% of maximum capacity. Speed endurance, high-speed and interval runs averaging 9 km week-1 increased within 3 weeks to 22.7 km during ITI, and the total volume increased from 61.6 to 84.7 km. A plateau in endurance performance and decrease in maximum performance occurred during ITV, probably due to overtraining, with performance incompetence over months. Nocturnal catecholamine excretion decreased markedly (47-53%), contrary to exercise-related plasma catecholamine responses, which increased. Resting and exercise-related cortisol and aldosterone levels decreased. Improvement in endurance and maximum performance occurred during ITI indicating a failure to cause an overtraining syndrome in ITI. Decrease in noctural catecholamine excretion was clearly lower (9-26%), exercise-related catecholamine responses showed a significant decrease, cortisol and aldosterone levels remained almost constant, exercise-related prolactin levels decreased slightly. There were no differences in insulin, C-peptide, free testosterone, somatotropic hormone (STH), follicle stimulating hormone (FSH), luteinizing hormone (LH), thyroid stimulating hormone (TSH), tri-iodothyronine (T3) and thyroxine (T4). The decrease in nocturnal catecholamine excretion during ITV might indicate a decrease in intrinsic sympathetic activity in exhausted sportsmen. But it remains open whether this reflected a central nervous system incompetence.
pubmed:commentsCorrections
http://linkedlifedata.com/resource/pubmed/commentcorrection/1490214-1601559, http://linkedlifedata.com/resource/pubmed/commentcorrection/1490214-2722329, http://linkedlifedata.com/resource/pubmed/commentcorrection/1490214-2982908, http://linkedlifedata.com/resource/pubmed/commentcorrection/1490214-3062735, http://linkedlifedata.com/resource/pubmed/commentcorrection/1490214-3429089, http://linkedlifedata.com/resource/pubmed/commentcorrection/1490214-3519479, http://linkedlifedata.com/resource/pubmed/commentcorrection/1490214-3744643, http://linkedlifedata.com/resource/pubmed/commentcorrection/1490214-4085479, http://linkedlifedata.com/resource/pubmed/commentcorrection/1490214-457555, http://linkedlifedata.com/resource/pubmed/commentcorrection/1490214-4635923, http://linkedlifedata.com/resource/pubmed/commentcorrection/1490214-6102098, http://linkedlifedata.com/resource/pubmed/commentcorrection/1490214-6449313, http://linkedlifedata.com/resource/pubmed/commentcorrection/1490214-7014593, http://linkedlifedata.com/resource/pubmed/commentcorrection/1490214-7298422, http://linkedlifedata.com/resource/pubmed/commentcorrection/1490214-7444345, http://linkedlifedata.com/resource/pubmed/commentcorrection/1490214-994720
pubmed:language
eng
pubmed:journal
pubmed:citationSubset
IM
pubmed:chemical
pubmed:status
MEDLINE
pubmed:month
Dec
pubmed:issn
0306-3674
pubmed:author
pubmed:issnType
Print
pubmed:volume
26
pubmed:owner
NLM
pubmed:authorsComplete
Y
pubmed:pagination
233-42
pubmed:dateRevised
2010-9-7
pubmed:meshHeading
pubmed:year
1992
pubmed:articleTitle
Training-overtraining: performance, and hormone levels, after a defined increase in training volume versus intensity in experienced middle- and long-distance runners.
pubmed:affiliation
Department of Sports and Performance Medicine, University Clinic Freiburg, Germany.
pubmed:publicationType
Journal Article, Comparative Study, Research Support, Non-U.S. Gov't