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J Int Soc Sports Nutr. 2010 Jan 22;7(1):3. doi: 10.1186/1550-2783-7-3.

The betaine content of sweat from adolescent females.

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1
Danisco A/S, Elmsford, NY, USA. stuart.craig@danisco.com.

Abstract

BACKGROUND:

This study was developed to establish whether betaine was present in the sweat of females and to determine any correlations with other sweat components.

METHODS:

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.

RESULTS:

Betaine was present in the sweat of all subjects (232 +/- 84 mumol.L-1), which is higher than typically found in plasma. The concentration of several sweat components were correlated, in particular betaine with most other measured components.

CONCLUSION:

Betaine, an osmoprotectant and methyl donor, is a component of sweat that may be lost from the body in significant amounts.

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