Self selected speed and maximal lactate steady state speed in swimming

The purposes of this study were to ascertain whether physiological and stroking parameters remain stable during a 2-hour exercise performed at self-selected swimming speed (S4) and whether this speed corresponds to those associated with the maximal lactate steady state (SMLSS). Ten well-trained comp...

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Bibliographic Details
Published in:Journal of sports medicine and physical fitness 2005-03, Vol.45 (1), p.1-6
Main Authors: BARON, B, DEKERLE, J, DEPRETZ, S, LEFEVRE, T, PELAYO, P
Format: Article
Language:English
Subjects:
Acids
Adult
Analysis of Variance
Anatomy & physiology
Biological and medical sciences
Body Composition
Carbon Dioxide - metabolism
Exercise
Exercise Physiology
Female
Fundamental and applied biological sciences. Psychology
Heart Rate - physiology
Hemodynamics - physiology
Humans
Lactates - blood
Male
Measurement Techniques
Oxygen Consumption - physiology
Physical Exertion - physiology
Sports medicine
Statistics, Nonparametric
Swimming
Swimming - physiology
Task Performance and Analysis
Vertebrates: body movement. Posture. Locomotion. Flight. Swimming. Physical exercise. Rest. Sports
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Summary:The purposes of this study were to ascertain whether physiological and stroking parameters remain stable during a 2-hour exercise performed at self-selected swimming speed (S4) and whether this speed corresponds to those associated with the maximal lactate steady state (SMLSS). Ten well-trained competitive swimmers performed a maximal 400-m front crawl test, 4 30-min swimming tests in order to determine S(MLSS) and a 2-hour test swum at their preferred paces to determine self-selected swimming speed (S4), stroke rate (SR4), and stroke length (SL4) defined as the mean values observed between the 5th and the 15th min of this test. The stroking, metabolic and respiratory parameters, and ratings of perceived exertion (CR10) were reported throughout the 2-hour test. S4 and SMLSS were not significantly different and were highly correlated (r=0.891). S4 and SL4 decreased significantly after a steady state of 68 min and 100 min, respectively, whereas SR4 remained constant. Mean VO2, dioxide output, and heart rate values did not evolve significantly between the 10th and 120th minute of the test whereas capillary blood lactate concentration (La) decreased significantly (p
ISSN:0022-4707
1827-1928