Beer as a Sports Drink? Manipulating Beer's Ingredients to Replace Lost Fluid

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Desbrow, Ben
Murray, Daniel
Leveritt, Michael
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2013
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Abstract

Purpose: To investigate the effect of manipulating the alcohol and sodium content of beer on fluid restoration following exercise. Method: Seven male volunteers exercised on a cycle ergometer until 1.96 ᠰ.25% body mass (mean᠓D) was lost. Participants were then randomly allocated a different beer to consume on four separate occasions. Drinks included a low-alcohol beer (2.3% ABV; LightBeer), a low-alcohol beer with 25 mmol׌-1 of added sodium (LightBeer+25), a full-strength beer (4.8% ABV; Beer), or a full-strength beer with 25 mmol׌-1 of added sodium (Beer+25). Volumes consumed were equivalent to 150% of body mass loss during exercise and were consumed over a 1h period. Body mass and urine samples were obtained before and hourly for 4 hr after beverage consumption. Results: Significantly enhanced net fluid balance was achieved following the LightBeer+25 trial (-1.02 ᠰ.35 kg) compared with the Beer (-1.59 ᠰ.32 kg) and Beer+25 (-1.64 ᠰ.28 kg) treatments. Accumulated urine output was significantly lower in the LightBeer+25 trial (1477 ᠴ85 ml) compared with the Beer+25 (2101 ᠴ82 ml) and Beer (2175 ᠳ72 ml) trials. Conclusion: A low alcohol beer with added sodium offers a potential compromise between a beverage with high social acceptance and one which avoids the exacerbated fluid losses observed when consuming full strength beer.

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International Journal of Sport Nutrition & Exercise Metabolism

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23

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© 2013 Human Kinetics. This is the author-manuscript version of this paper. Reproduced in accordance with the copyright policy of the publisher. Please refer to the journal website for access to the definitive, published version.

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Sports science and exercise

Medical physiology

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