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 4 of 3523
Association of sex and age with responses to lower-body negative pressure
Author and Affiliation:
Frey, Mary Anne Bassett(NASA John F. Kennedy Space Center, Cocoa Beach, FL, United States)
Hoffler, G. Wyckliffe(NASA Kennedy Space Center, Bionetics Corp.)
Abstract: The effects of age and sex on the human-body responses to -50 torr LBNP were investigated in subjects who have undergone LBNP tests at the Kennedy Space Center. The comparison of results obtained on women and age-matched men indicated that men had larger relative increases in calf circumference and greater increases in peripheral resistance during the exposure to LBNP than the women; on the other hand, women displayed greater increases in thoracic impedance and heart rate. The comparison of the results on men of different ages (between 29 and 56 y) indicated that older subjects had greater increases in peripheral resistance and less heart rate elevation in response to LBNP. It is suggested that the age-related circulatory differences were due to a reduction in vagal response and a switch to predominant sympathetic nervous system influence in older men.
Publication Date: Oct 01, 1988
Document ID:
19890026569
(Acquired Nov 28, 1995)
Accession Number: 89A13940
Subject Category: AEROSPACE MEDICINE
Document Type: Journal Article
Publication Information: Journal of Applied Physiology (ISSN 0161-7567); 65; 1752-175
Publisher Information: United States
Financial Sponsor: NASA; United States
Organization Source: NASA Kennedy Space Center; Cocoa Beach, FL, United States
Bionetics Corp.; Cocoa Beach, FL, United States
Description: 5p; In English
Distribution Limits: Unclassified; Publicly available; Unlimited
Rights: Copyright
NASA Terms: AGE FACTOR; CARDIOVASCULAR SYSTEM; LOWER BODY NEGATIVE PRESSURE; ORTHOSTATIC TOLERANCE; SEX FACTOR; BARORECEPTORS; HEART RATE; SYMPATHETIC NERVOUS SYSTEM
Imprint And Other Notes: Journal of Applied Physiology (ISSN 0161-7567), vol. 65, Oct. 1988, p. 1752-1756.
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 18, 2011
Contact Us