NASA Logo, External Link
Facebook icon, External Link to NASA STI page on Facebook Twitter icon, External Link to NASA STI on Twitter YouTube icon, External Link to NASA STI Channel on YouTube RSS icon, External Link to New NASA STI RSS Feed AddThis share icon
 

Record Details

Record 1 of 873
Cardiorespiratory deconditioning with static and dynamic leg exercise during bed rest
Author and Affiliation:
Stremel, R. W.(California Univ., Davis, CA, United States)
Convertino, V. A.(California Univ., Davis, CA, United States)
Bernauer, E. M.(California Univ., Davis, CA, United States)
Greenleaf, J. E.(NASA Ames Research Center, Laboratory of Human Environmental Physiology, Moffett Field, Calif)
Abstract: Results are presented for an experimental study designed to compare the effects of heavy static and dynamic exercise training during 14 days of bed rest on the cardiorespiratory responses to submaximal and maximal exercise performed by seven healthy men aged 19-22 yr. The parameters measured were submaximal and maximal oxygen uptake, minute ventilation, heart rate, and plasma volume. The results indicate that exercise alone during bed rest reduces but does not eliminate the reduction in maximal oxygen uptake. An additional positive hydrostatic effect is therefore necessary to restore maximal oxygen uptake to ambulatory control levels. The greater protective effect of static exercise on maximal oxygen uptake is probably due to a greater hydrostatic component from the isometric muscular contraction. Neither the static nor the dynamic exercise training regimes are found to minimize the changes in all the variables studied, thereby suggesting a combination of static and dynamic exercises.
Publication Date: Dec 01, 1976
Document ID:
19770033929
(Acquired Dec 01, 1995)
Accession Number: 77A16781
Subject Category: AEROSPACE MEDICINE
Document Type: Journal Article
Publication Information: Journal of Applied Physiology; 41; Dec. 197
Publisher Information: United States
Contract/Grant/Task Num: NCA2-OR180-506
Financial Sponsor: NASA; United States
Organization Source: California Univ.; Davis, CA, United States
NASA Ames Research Center; Moffett Field, CA, United States
Description: 5p; In English
Distribution Limits: Unclassified; Publicly available; Unlimited
Rights: Copyright
NASA Terms: BED REST; HEART FUNCTION; PHYSICAL EXERCISE; PHYSICAL FITNESS; RESPIRATORY PHYSIOLOGY; DECONDITIONING; HEART RATE; LEG (ANATOMY); OXYGEN CONSUMPTION; SUPINE POSITION; VENTILATION; WORK CAPACITY
Imprint And Other Notes: Journal of Applied Physiology, vol. 41, Dec. 1976, p. 905-909.
Miscellaneous Notes: p. 905-909
Availability Source: Other Sources
› Back to Top
Find Similar Records
NASA Logo, External Link
NASA Official: Gerald Steeman
Site Curator: STI Program
Last Modified: August 16, 2011
Contact Us