Linked Life Data

9789797

Source:http://linkedlifedata.com/resource/pubmed/id/9789797

Statements in which the resource exists as a subject.
PredicateObject
rdf:type
lifeskim:mentions
pubmed:issue
3
pubmed:dateCreated
1998-12-18
pubmed:abstractText
The influence of exercise training intensity on thyroid activity at rest was studied in male Wistar rats, weighting 114 g +/- 24 (mean +/- SD) at the beginning of the experiment. Animals were assigned to the following groups: untrained controls and rats trained on a treadmill at the speed of 20 m/min over a 5-week period with different intensities: 2 x 60 min weekly, 4 x 60 min, 6 x 20 min, 6 x 40 min and 6 x 60 min weekly. Thyroid peroxidase (TPO) and hepatic iodothyronine 5'-monodeiodinase (5'DI) activities as well as plasma thyroxine (T4), 3,3'5-triiodothyronine (T3) and 3,3'.5'-triiodothyronine (rT3) concentrations were determined. Training intensity was found to influence parameters under investigation. TPO activity was decreased in groups trained 240 min (4 x 60 min and 6 x 40 min) and 360 min (6 x 60 min) weekly in comparison to control, untrained group. Furthermore, a drop in T4 plasma concentration in all trained groups and a decrease in T3 plasma concentration in groups exercising for 120 min (2 x 60 min and 6 x 20 min) weekly, as compared to control, untrained rats, was found. Hepatic 5'DI activity and rT3 plasma concentration were not affected by training. Thus, exercise training in rats seems to elicit the fall in TPO activity and T4 plasma concentration at rest but without changing hepatic 5'DI activity and rT3 plasma concentrations. A decline in T3 plasma concentration, observed in rats trained with the lowest exercise intensities, cold be regarded as transitional effect in adaptation to chronic exercise.
pubmed:language
eng
pubmed:journal
pubmed:citationSubset
IM
pubmed:chemical
pubmed:status
MEDLINE
pubmed:month
Sep
pubmed:issn
0867-5910
pubmed:author
pubmed:issnType
Print
pubmed:volume
49
pubmed:owner
NLM
pubmed:authorsComplete
Y
pubmed:pagination
457-66
pubmed:dateRevised
2003-11-14
pubmed:meshHeading
pubmed:year
1998
pubmed:articleTitle
The effect of exercise training intensity on thyroid activity at rest.
pubmed:affiliation
Department of Physiology of Nutrition, Faculty of Human Nutrition, Warsaw Agricultural University, Poland.
pubmed:publicationType
Journal Article