Document Detail


Cardiorespiratory responses to exercise distributed between the upper and lower body.
MedLine Citation:
PMID:  6863099     Owner:  NLM     Status:  MEDLINE    
Abstract/OtherAbstract:
The present study examined the influence that distributing exercise between upper (arm crank exercise) and lower (cycle exercise) body muscle groups had on cardiorespiratory responses to constant power output (PO) exercise. Six male volunteers completed five submaximal exercise bouts of 7-min duration at both 76 and 109 W. The arm PO/total PO (% arm) for these bouts was approximately 0, 20, 40, 60, and 100%. At 76 W, O2 uptake (VO2) did not change (P greater than 0.05) from 0 to approximately 20% arm (approximately 1.30 1 x min-1) but increased with increasing percent arm values up to 100% (1.58 1 x min-1). At 109 W, VO2 increased throughout the range of 0 (1.70 1 x min-1) to 100% arm (2.33 1 x min-1). In general, minute ventilation (VE) and respiratory exchange ratio (R) increased with increased percent arm values at 76 and 109 W. The heart rate (HR) responses remained unchanged from 0 to 60% arm at both 76 and 109 W; however, between 60 and 100% arm, a 26-beats x min-1 increase was observed at 76 W (143 beats x min-1 at 100% arm) and a 45-beats x min-1 increase at 109 W (174 beats x min-1 at 100% arm). These data suggested that during upper body exercise, the increased VO2 associated with increased percent arm values was not accompanied by an elevated HR response when at least 40% of the PO was performed by the lower body. This might be attributed to a facilitated venous return and/or a decreased total peripheral resistance when the lower body was involved in the exercise.
Authors:
M M Toner; M N Sawka; L Levine; K B Pandolf
Related Documents :
10803419 - Early corrective reactions of the leg to perturbations at the torso during walking in h...
19346669 - The effect of external cuff pressure on initial exercise hyperpnea.
8213179 - Muscle fibre types and enzyme activities after training with local leg ischaemia in man.
11828229 - Diagnosing external iliac endofibrosis by postexercise ankle to arm index in cyclists.
7594109 - Peripheral blood flow responses to exercise after successful correction of coarctation ...
7556119 - Are oxygen uptake kinetics at the onset of exercise speeded up by local metabolic statu...
8524729 - Health promotion and osteoporosis prevention among postmenopausal women.
10710409 - Iron supplementation improves endurance after training in iron-depleted, nonanemic women.
2909329 - Exercise testing in women with chest pain. are there additional exercise characteristic...
Publication Detail:
Type:  Comparative Study; Journal Article    
Journal Detail:
Title:  Journal of applied physiology: respiratory, environmental and exercise physiology     Volume:  54     ISSN:  0161-7567     ISO Abbreviation:  J Appl Physiol Respir Environ Exerc Physiol     Publication Date:  1983 May 
Date Detail:
Created Date:  1983-08-11     Completed Date:  1983-08-11     Revised Date:  2013-09-26    
Medline Journal Info:
Nlm Unique ID:  7801242     Medline TA:  J Appl Physiol Respir Environ Exerc Physiol     Country:  UNITED STATES    
Other Details:
Languages:  eng     Pagination:  1403-7     Citation Subset:  IM; S    
Export Citation:
APA/MLA Format     Download EndNote     Download BibTex
MeSH Terms
Descriptor/Qualifier:
Adult
Arm / physiology*
Exercise Test
Heart Rate
Humans
Leg / physiology*
Male
Oxygen Consumption
Physical Exertion*
Respiration*
Respiratory Function Tests

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


Previous Document:  Esophageal elastance in anesthetized humans.
Next Document:  Noninvasive quantitative imaging of shape and volume of lungs.