Document Detail

Thermal and circulatory responses to repeated bouts of prolonged running.
MedLine Citation:
PMID:  491877     Owner:  NLM     Status:  MEDLINE    
The purpose of this study was to determine the thermal and circulatory responses of seven runners (X VO2max = 66 ml kg min) to two bouts of high intensity prolonged treadmill running (PTR) [each 80-min at 70% VO2max] spaced by a 90-min rest. After the transition to exercise, oxygen uptake (VO2) and percent change in plasma volume remained constant throughout each PTR. Rectal temperature (Tr) and heart rate (HR) increased while stroke volume (SV) and cardiac output (Q) decreased during the course of each PTR. The pattern of response for each variable was similar for both PTRs. However, Tr and HR were higher and SV and Q were lower during the second PTR when compared to the first of each respective time period.
M N Sawka; R G Knowlton; J B Critz
Related Documents :
21743327 - Syncope during exercise: just another benign vasovagal event?
6662757 - Dynamics of cardiac output and systolic time intervals in supine and upright exercise.
21725107 - The effects of fatigue on soccer skills performed during a soccer match simulation.
11283447 - Stability and convergent validity of three physical activity assessments.
23179677 - For the overweight, is proximity to in-shape, normal-weight exercisers a deterrent or a...
25333827 - Combined effects of sleep deprivation and strenuous exercise on cognitive performances ...
Publication Detail:
Type:  Journal Article    
Journal Detail:
Title:  Medicine and science in sports     Volume:  11     ISSN:  0025-7990     ISO Abbreviation:  Med Sci Sports     Publication Date:  1979  
Date Detail:
Created Date:  1979-12-20     Completed Date:  1979-12-20     Revised Date:  2007-11-15    
Medline Journal Info:
Nlm Unique ID:  0203246     Medline TA:  Med Sci Sports     Country:  UNITED STATES    
Other Details:
Languages:  eng     Pagination:  177-80     Citation Subset:  IM    
Export Citation:
APA/MLA Format     Download EndNote     Download BibTex
MeSH Terms
Body Temperature Regulation*
Cardiac Output
Heart Rate
Oxygen Consumption
Physical Endurance*
Stroke Volume

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

Previous Document:  Physiological characteristics of elite prepubertal cross-country runners.
Next Document:  Low exercise ventilation in endurance athletes.