Document Detail

Cardiac responses of young women to conditioning for a 10 kilometer race.
MedLine Citation:
PMID:  1521955     Owner:  NLM     Status:  MEDLINE    
Seven previously sedentary women (mean age, 19 yrs) participated in an 11-week running program (4-5 sessions/week) in preparation for a 10 km race. Training intensity was 80-85% of maximum heart rate reserve. Exercise duration began at 20 minutes/session and was lengthened 5 minutes/session every 2 weeks. A control group consisting of 4 women was also evaluated. Maximal oxygen uptake (VO2max, ml/kg/min) increased 11% in the trained group and decreased 6% in the control group during the study (p less than 0.05). Oxygen uptake, cardiac output (Q), and stroke volume (SV) increased significantly (p less than 0.05) in the trained group during each of 3 levels of steady state cycle ergometer exercise (heart rate targets: 115, 135 and 155 beats/min, respectively). Arteriovenous oxygen difference (a-V02 diff) was not increased significantly after training. Resting left ventricular dimensions and performance evaluated by echocardiography also did not change significantly after training. It was concluded that short-term conditioning in this population results in an increased exercise Q without concomitant increases in left ventricular dimensions or arteriovenous oxygen difference.
L A Wolfe; A Laprade; G W Burggraf; R Norman
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Publication Detail:
Type:  Comparative Study; Journal Article    
Journal Detail:
Title:  International journal of sports medicine     Volume:  13     ISSN:  0172-4622     ISO Abbreviation:  Int J Sports Med     Publication Date:  1992 Jul 
Date Detail:
Created Date:  1992-10-09     Completed Date:  1992-10-09     Revised Date:  2006-11-15    
Medline Journal Info:
Nlm Unique ID:  8008349     Medline TA:  Int J Sports Med     Country:  GERMANY    
Other Details:
Languages:  eng     Pagination:  384-9     Citation Subset:  IM    
School of Physical and Health Education, Queen's University, Kingston, Ontario, Canada.
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MeSH Terms
Cardiac Output*
Oxygen Consumption
Sex Factors
Stroke Volume
Track and Field*

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

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