Document Detail


Cardiovascular adaptations in 8- to 12-year-old boys following a 14-week running program.
MedLine Citation:
PMID:  8081319     Owner:  NLM     Status:  MEDLINE    
Abstract/OtherAbstract:
This study examined the effects of a 14-week running program on VO2max, as well as cardiac output (Q) and arterial-venous O2 difference (a-vO2 dif) at submaximal intensities corresponding to 50 and 75% of VO2max. Thirteen boys (mean age 10.6 +/- 1.2 yrs) served as experimental subjects while 13 other boys of similar age (mean age 10.2 +/- 1.2 yrs) served as controls. Mean VO2max in the runners increased 13%, from 44.2 +/- 7.0 to 49.9 +/- 6.3 ml.kg-1.min-1. Posttraining VO2 during submaximal and maximal exercise was significantly (p < 0.05) greater in the runners than in the controls. Q and SV exhibited an increase of 10% at each intensity, but posttraining differences between groups were not significant (p > 0.05). A-vO2 dif increased by 8% at 50% of VO2max and by 6% at 75% of VO2max, and was significantly greater in the runners following training. These results indicate that increases in submaximal relative VO2 in children are mediated by increases in a-vO2 dif and Q.
Authors:
A D Mahon; P Vaccaro
Related Documents :
19952839 - Water treadmill parameters needed to obtain land treadmill intensities in runners.
7878169 - The effects of running, environment, and attentional focus on athletes' catecholamine a...
16640949 - Management of lower extremity malalignment during running with neuromuscular retraining...
8072729 - Does running cause gastrointestinal symptoms? a survey of 93 randomly selected runners ...
17332159 - Curcumin effects on inflammation and performance recovery following eccentric exercise-...
10211849 - Effects of acute exercise on plasma erythropoietin levels in trained runners.
3140329 - Metabolic and ventilatory rates in newborn kittens during acute hypoxia.
18582809 - Continuous hemodynamic monitoring in patients with pulmonary arterial hypertension.
21998269 - Resistance exercise training improves age-related declines in leg vascular conductance ...
Publication Detail:
Type:  Journal Article    
Journal Detail:
Title:  Canadian journal of applied physiology = Revue canadienne de physiologie appliquée     Volume:  19     ISSN:  1066-7814     ISO Abbreviation:  Can J Appl Physiol     Publication Date:  1994 Jun 
Date Detail:
Created Date:  1994-10-13     Completed Date:  1994-10-13     Revised Date:  2008-11-21    
Medline Journal Info:
Nlm Unique ID:  9306274     Medline TA:  Can J Appl Physiol     Country:  UNITED STATES    
Other Details:
Languages:  eng     Pagination:  139-50     Citation Subset:  IM    
Affiliation:
Exercise Science Laboratory, University of Maryland, College Park 20742.
Export Citation:
APA/MLA Format     Download EndNote     Download BibTex
MeSH Terms
Descriptor/Qualifier:
Adaptation, Physiological*
Adolescent
Cardiovascular Physiological Phenomena*
Child
Heart Rate
Humans
Male
Oxygen Consumption
Physical Endurance / physiology*
Running / physiology*

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


Previous Document:  Caffeine and exercise: metabolism and performance.
Next Document:  Population evaluations of health related fitness from perceptions of physical activity and fitness.