Authors: N Rianon D Feeback R Wood T Driscoll L Shackelford A LeBlanc
Publish Date: 2003/03/06
Volume: 72, Issue: 6, Pages: 694-697
Abstract
The purpose of this study was to determine whether a simple noninvasive sweat collection method using skin patches would be useful in monitoring sweat Ca and to determine changes in dermal Ca loss during a bed rest study testing a resistive exercise countermeasure The study showed that the technique was highly reproducible the mean intrasubject variation approached zero and the interindividual variability CV varied from 18 to 32 for the three anatomical regions arm chest and back tested There was less than 10 difference in sweat Ca excretion from different skin regions within the same individual at a given time point A calculated estimate of total body sweat excretion for 12 bed rest subjects was 35 ± 4 mg/day mean ± SE close to published whole body measurements Bed rest testing showed no significant differences with or without exercise when conducted in a temperaturecontrolled environment We conclude that the skin patch technique is useful for monitoring changes in sweat Ca
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