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Address:
15201 Shady Grove Rd. Suite #106
Rockville, MD 20850
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Sports Drinks - Keeping Yourself Fueled up on the field
Judy Goffi
MS, RD, CDE, LD
Fluid replacement is critical to successful
and safe sports performance. Numerous research
studies support the use of electrolyte and carbohydrate
replenishment drinks as a way of improving performance
and preventing fatigue (1-2). One study showed
that athletes used 22% less stored carbohydrate
during sprint exercise when drinking a carbohydrate
supplement drink (2).
What Makes a Good Sports Drink?
A good sports drink should contain carbohydrate
and sodium which maximizes fluid absorption
and helps to provide your muscles with energy.
It should also provide potassium and magnesium,
as these are often lost during exercise and
competition. If you are sweating heavily, your
drink should contain up to 8% carbohydrate as
this will enhance fluid absorption.
The following is a list of some commercially
available sports drinks.
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Sport Drink
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Sodium
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Potassium
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Magnesium
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Carb concentration
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Accelerade
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190
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64
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128
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9%
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Revenge Sport
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100
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110
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20
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7%
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G Push
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285
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60
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5
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7.5%
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Gatorade
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165
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45
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0
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6%
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Powerade
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79
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49
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0
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8%
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All Sport
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82-120
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75
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0
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8 to 9%
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Cytomax
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60
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112
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0
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7 to 11%
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Of the above list, only Accelerate, Revenge
Sport and G Push even contain magnesium. Popular
drinks such as Gatorade, All Sport and Powerade
contain none.
Check with your local health food store and
read the back of the labels for information
on carbohydrate content, sodium, potassium and
magnesium content.
Don't get fancy with buying a sports drink.
There is no need for ginseng, ecchineaca or
any other herbal "enhancement" that has no basis
for improving performance or decreasing fatigue.
Fatigue occurs due to loss of stored carbohydrate
or glycogen. The way to replace that is
through a carbohydrate supplement.
Return to Articles
References: 1. Ivy JL, Lee
MC, Brozinick JT, et al: Muscle glycogen storage
after different amounts of carbohydrate ingestion.
J Appl Physiol 1988;65(5):2018-2023.
2. Sugiura K, Kobayashi K. Effect of carbohydrate
ingestion on sprint performance following continuous
and intermittent exercise. Med Sci Sports Exerc
1998 Nov;30(11):1624-30
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