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pubmed-article:11829023pubmed:dateCreated2002-2-5lld:pubmed
pubmed-article:11829023pubmed:abstractTextThe purpose of this study was to compare cardiorespiratory responses of men and women to submaximal and maximal workloads before and after bed rest (BR). Fifteen male college students (19-23 yr) and 8 female nurses (23-34 yr) underwent 14 d and 17 d, respectively of bed rest. The maximal work capacity test was performed in the supine position on a bicycle ergometer just before and immediately after bed rest. The women's maximal O2 uptake (maximal VO2) was 41% lower (P<0.05) than the men's before bed rest and 42% lower (P<0.05) after bed rest. During bed rest the women's maximal VO2 decreased from 2.06 to 1.86 liter/min (-9.7%, P<0.05), and that of the men decreased from 3.52 to 3.20 liter/min (-9.1%, P<0.05). Compared with pre-BR values, after bed rest the maximal ventilatory volume was essentially unchanged in the men (+1.8%) and women (+ 2.3%), but maximal heart rate was elevated from 185 to 193 b/min (+ 4.3%, P<0.05) in the men and from 181 to 187 b/min (3.3%, P<0.05) in the women. Submaximal VO2 was unchanged after bed rest in the men but was significantly reduced in the women; the women's Hct and RBC levels were lower (P<0.05) than comparable male data. Mean corpuscular volume was unchanged in both groups pre- and post-bed rest. It is concluded that the proportional deterioration in maximal VO2 following prolonged bed rest was essentially the same in young men and women.lld:pubmed
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pubmed-article:11829023pubmed:pagination895-905lld:pubmed
pubmed-article:11829023pubmed:dateRevised2006-11-15lld:pubmed
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pubmed-article:11829023pubmed:articleTitleCardiorespiratory responses to exercise after bed rest in men and women.lld:pubmed
pubmed-article:11829023pubmed:affiliationLaboratory of Human Environmental Physiology, Ames Research Center, NASA, Moffett Field, CA 94035, USA.lld:pubmed
pubmed-article:11829023pubmed:publicationTypeJournal Articlelld:pubmed
pubmed-article:11829023pubmed:publicationTypeComparative Studylld:pubmed
pubmed-article:11829023pubmed:publicationTypeResearch Support, U.S. Gov't, Non-P.H.S.lld:pubmed
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