HOME HELP FEEDBACK SUBSCRIPTIONS ARCHIVE SEARCH TABLE OF CONTENTS		QUICK SEARCH:   [advanced] Author: Keyword(s): Year:  Vol:  Page:

This Article Full Text (PDF) Services Email this article to a friend Similar articles in this journal Similar articles in PubMed Alert me to new issues of the journal Download to citation manager Citing Articles Citing Articles via Google Scholar Google Scholar Articles by Pugh, L. G. C. E. Search for Related Content PubMed PubMed Citation Articles by Pugh, L. G. C. E.

1. Blood volume was measured with carbon monoxide on six hill-walkers before and immediately after a 28-mile walk on two occasions. The subjects had free access to food and fluid.

2. Blood volume increased and haematocrit fell significantly on both occasions compared with the control observations. The mean increase of blood volume was 204 ml. or 3·9% (P < 0·01) and the mean reduction of haematocrit was 2·1% (P < 0·02). Plasma volume calculated from these results increased by 233 ml. or 7·3%. There was no significant change in red cell volume or plasma protein concentration.

3. These changes are the opposite of those taking place in short-term exercise and suggest that in the absence of dehydration a compensatory adjustment of blood volume takes place during exercise of many hours duration.