Document Detail

Oxygen uptake response to stroke rate manipulation in freestyle swimming.
MedLine Citation:
PMID:  20195179     Owner:  NLM     Status:  MEDLINE    
PURPOSE: The purpose of this study was to examine the manipulation of stroke rate on V˙O2 in submaximal, constant speed freestyle swimming.
METHODS: Preferred stroke rate for swimming freestyle at 1.0 m·s(-1) in a flume was determined for 10 competitive swimmers (mean ± SD: age = 33.3 ± 13.6 yr, height = 175.3 ± 8.6 cm, weight = 74.9 ± 12.2 kg). Participants then completed flume swims at 1.0 m·s(-1) with stroke rates equal to -20%, -10%, 0%, +10%, and +20% of their preferred stroke rate in a randomized order during which V˙O2 was continuously monitored. Each trial continued for 1 min after steady-state V˙O2 was verified (∼4-5 min). During the final minute of each trial, V˙O2 was measured using the Douglas bag technique, HR was recorded, and kick rate (KR) was computed using the time needed to complete 30 kicks. RPE was reported immediately after each trial.
RESULTS: V˙O2 increased 11%-16% (P < 0.05) when stroke rate was reduced but was nominally affected when stroke rate was increased. Likewise, HR increased 4%-6% (P < 0.05), and RPE increased 15%-30% (P < 0.05) when stroke rate was reduced but not affected when stroke rate was increased.
CONCLUSIONS: These data suggest that these swimmers preferred to swim freestyle at the lowest stroke rate (or the longest stroke length) that did not require an increase in V˙O2.
Scott P McLean; Dean Palmer; Graham Ice; Martin Truijens; Jimmy C Smith
Related Documents :
9451649 - Hypoxic ventilatory sensitivity in men is not reduced by prolonged hyperoxia (predictiv...
1859069 - Diaphragmatic energetics during prolonged exhaustive exercise.
1141119 - Influence of breathing pattern on oxygen exchange during hypoxia and exercise.
7608019 - Visceral oxygen consumption during chronic feed restriction and realimentation in sheep.
10759599 - Deciphering the mysteries of myoglobin in striated muscle.
7597979 - Red blood cell transit time in man: theoretical effects of capillary density.
8886389 - The predatory strike of free ranging praying mantises, sphodromantis lineola (burmeiste...
2729059 - Blood pressure and cardiac output during exercise: a longitudinal study of children und...
6501039 - Pulmonary function changes after 1 h continuous heavy exercise in 0.21 ppm ozone.
Publication Detail:
Type:  Journal Article; Research Support, Non-U.S. Gov't    
Journal Detail:
Title:  Medicine and science in sports and exercise     Volume:  42     ISSN:  1530-0315     ISO Abbreviation:  Med Sci Sports Exerc     Publication Date:  2010 Oct 
Date Detail:
Created Date:  2010-09-21     Completed Date:  2011-01-13     Revised Date:  -    
Medline Journal Info:
Nlm Unique ID:  8005433     Medline TA:  Med Sci Sports Exerc     Country:  United States    
Other Details:
Languages:  eng     Pagination:  1909-13     Citation Subset:  IM; S    
Kinesiology Department, Southwestern University, Georgetown, TX 78626, USA.
Export Citation:
APA/MLA Format     Download EndNote     Download BibTex
MeSH Terms
Heart Rate / physiology
Middle Aged
Oxygen Consumption / physiology*
Swimming / physiology*
Young Adult

From MEDLINE®/PubMed®, a database of the U.S. National Library of Medicine

Previous Document:  Glossopharyngeal insufflation and pulmonary hemodynamics in elite breath hold divers.
Next Document:  Critical power: implications for determination of V?O2max and exercise tolerance.