The betaine content of sweat from adolescent females
Greg Horrace | Maresh Carl M | Ganio Matthew S | Craig Stuart AS | Craig Shona S | da Costa Kerry-Ann | Zeisel Steven H
<p>Abstract</p> <p>Background</p> <p>This study was developed to establish whether betaine was present in the sweat of females and to determine any correlations with other sweat components.</p> <p>Methods</p> <p>Sweat patches were placed on eight trained adolescent Highland dancers (age = 13.6 ± 2.3 yr), who then participated in a dance class for 2 hours. Patches were removed, and the sweat recovered via centrifugation. The sweat was subsequently analyzed for betaine, choline, sodium, potassium, chloride, lactate, glucose, urea and ammonia.</p> <p>Results</p> <p>Betaine was present in the sweat of all subjects (232 ± 84 μmol·L<sup>-1</sup>), which is higher than typically found in plasma. The concentration of several sweat components were correlated, in particular betaine with most other measured components.</p> <p>Conclusion</p> <p>Betaine, an osmoprotectant and methyl donor, is a component of sweat that may be lost from the body in significant amounts.</p>
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