| Blood metabolites during prolonged exercise in swimming and leg cycling. | |
| | |
MedLine Citation:
|
PMID: 7199448 Owner: NLM Status: MEDLINE |
Abstract/OtherAbstract:
|
This study was designed to compare the influence of two modes of exercise (swimming and leg cycling) on the blood concentrations of metabolic substrates and metabolites during a 45-min exercise period. Eight college students (mean age = 21.6 +/- 1.2 year) exercised at 70% of VO2 max, in water using the front crawl on one occasion, and on a cycle ergometer using the legs on another. Blood samples were drawn at 0, 15, 30, and 45 min and analyzed for free fatty acids, glycerol, glucose, pyruvate, and lactate concentrations. Mean oxygen uptakes (2.23 vs 2.12 l . min-1) and heart rates (152 vs 150 b . min-1) for cycling and swimming respectively were not significantly different. Lactate and pyruvate were significantly (p less than 0.01) higher during swimming as compared to cycling. Free fatty acids, glycerol, and glucose were not significantly different between the two modes of exercise (p greater than 0.05). Assuming venous blood concentrations provide some indication of metabolic events, these data are compatible with a tendency to a higher relative carbohydrate oxidation rate during swimming as compared to cycling during prolonged exercise at the same relative work intensities. |
| | |
Authors:
|
J M Lavoie |
Related Documents
:
|
11247928 - Lactate removal is not enhanced in nonstimulated perfused skeletal muscle after enduran... 18308878 - Heart rate-based protocols for exercise challenge testing do not ensure sufficient exer... 20013328 - The relationship between exercise intensity and the sweat lactate excretion rate. 8321628 - Effects of dichloroacetate on exercise performance in healthy volunteers. 22068048 - Total isovolumic time relates to exercise capacity in patients with transposition of th... 20378678 - A balance exercise program appears to improve function for patients with total knee art... |
Publication Detail:
|
Type: Comparative Study; Journal Article |
Journal Detail:
|
Title: European journal of applied physiology and occupational physiology Volume: 48 ISSN: 0301-5548 ISO Abbreviation: Eur J Appl Physiol Occup Physiol Publication Date: 1982 |
Date Detail:
|
Created Date: 1982-05-12 Completed Date: 1982-05-12 Revised Date: 2006-11-15 |
Medline Journal Info:
|
Nlm Unique ID: 0410266 Medline TA: Eur J Appl Physiol Occup Physiol Country: GERMANY, WEST |
Other Details:
|
Languages: eng Pagination: 127-33 Citation Subset: IM |
Export Citation:
|
APA/MLA Format Download EndNote Download BibTex |
| MeSH Terms | |
Descriptor/Qualifier:
|
Adult Blood Glucose / metabolism Fatty Acids, Nonesterified / blood Glycerol / blood Humans Lactates / blood* Male Oxygen Consumption Pyruvates / blood* Sports* Swimming* |
| Chemical | |
Reg. No./Substance:
|
0/Blood Glucose; 0/Fatty Acids, Nonesterified; 0/Lactates; 0/Pyruvates; 56-81-5/Glycerol |
From MEDLINE®/PubMed®, a database of the U.S. National Library of Medicine
Previous Document: Muscle ultrastructural characteristics of elite powerlifters and bodybuilders.
Next Document: The delayed effects of prolonged physical exercise and physical training on cholesterol level.