Document Detail

Energy expenditure during antiorthostatic bed rest (simulated microgravity).
MedLine Citation:
PMID:  7665419     Owner:  NLM     Status:  MEDLINE    
Few studies have addressed the interaction between energy balance and lean body mass in healthy subjects during spaceflight or its simulations. We used doubly labeled water to measure total energy expenditure (TEE) in nine healthy adult men during two 7-day periods, once before and once during a 10-day head-down bed-rest period. Mean TEE was 21% less during than before bed rest; however, neither basal (BEE) nor resting (REE) energy expenditures changed, implying that the lesser TEE resulted from a reduction in physical activity. During the bed-rest period, energy intake was 563 +/- 280 kcal/day higher than TEE (P < 0.05) but body weight, fluid balance, BEE, and REE did not change relative to before bed rest. However, the small but statistically significant increase in body fat (0.44 +/- 0.67 kg, P < 0.05) during the bed-rest period suggests that body weight alone does not accurately reflect changes in energy balance during antiorthostatic bed rest.
R J Gretebeck; D A Schoeller; E K Gibson; H W Lane
Related Documents :
12487419 - Magnesium and exercise.
21586989 - The effectiveness of exercise on improving cognitive function in older people: a system...
22062599 - Effect of exercise on skeletal muscle proteolytic enzyme activity and meat quality char...
1636689 - Relationship between aerobic fitness level and daily energy expenditure in weight-stabl...
21975459 - Kinematic and kinetic synergies of the lower extremities during the pull in olympic wei...
21867399 - Inhaled whole exhaust and its effect on exercise performance and vascular function.
10158029 - Evidence for the validity and utility of the stages of exercise behaviour change scale ...
11406489 - Sarcoplasmic reticulum ca(2+) uptake is impaired in coronary smooth muscle distal to co...
15665059 - Estimating oxygen consumption rates of arteriolar walls under physiological conditions ...
Publication Detail:
Type:  Journal Article    
Journal Detail:
Title:  Journal of applied physiology (Bethesda, Md. : 1985)     Volume:  78     ISSN:  8750-7587     ISO Abbreviation:  J. Appl. Physiol.     Publication Date:  1995 Jun 
Date Detail:
Created Date:  1995-10-11     Completed Date:  1995-10-11     Revised Date:  2013-09-26    
Medline Journal Info:
Nlm Unique ID:  8502536     Medline TA:  J Appl Physiol (1985)     Country:  UNITED STATES    
Other Details:
Languages:  eng     Pagination:  2207-11     Citation Subset:  IM; S    
Nutritional Biochemistry and Stable Isotope Laboratories, National Aeronautics and Space Administration, Johnson Space Center, Houston, Texas 77058, USA.
Export Citation:
APA/MLA Format     Download EndNote     Download BibTex
MeSH Terms
Bed Rest*
Body Weight
Energy Metabolism*
Time Factors
Reg. No./Substance:

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

Previous Document:  Effect of exercise on lipolytic sensitivity in endurance-trained athletes.
Next Document:  Hepatic anion flux during acute endotoxemia.