Vitamin C Doesn't Boost Your Workout

New study finds it doesn't help aerobic performance

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TUESDAY, Jan. 11, 2005 (HealthDayNews) -- Vitamin C doesn't pump up your exercise performance, says a University of Colorado study.

The findings contradict previous research that suggested ingestion of vitamin C reduced oxidative stress and, therefore, could provide a boost during workouts.

The new study found that while vitamin C did reduce oxidative stress during endurance exercises such as running, cycling and walking, neither short-term nor long-term use of vitamin C helped aerobic performance. This was true for both men and women in two age groups -- 23 years old and 61 years old.

"We did see a decrease in oxidative stress with large does of vitamin C, but this decrease didn't improve aerobic abilities either for younger or older subjects," study author Christopher Bell said in a prepared statement.

The study appears in the current online edition of the Journal of Applied Physiology.

More information

The U.S. National Library of Medicine has more about vitamin C.

SOURCE: American Physiological Society, news release, Jan. 6, 2005

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