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Omega-3 May Safely Treat Precancerous Bowel Polyps
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CIRCULATORY SYSTEM
Tai Chi and Qigong Offer Many Health Benefits: Review
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An Apple a Day May Help Keep Heart Disease Away
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Gummy Bears Join Cavity Fight
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Spices, Herbs Boost Health for Diabetics
Treatment for Type 2 Diabetes Updated
Coffee, Tea Might Stave Off Diabetes
DIET, NUTRITION
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Blueberry Drink Protects Mice From Obesity, Diabetes
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DISABILITIES
Review Finds Marijuana May Help MS Patients
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Pregnant Rural Women More at Risk
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EYE CARE, VISION
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FITNESS
Exercise Cuts Lung Cancer Risk in Ex-Smokers by 45%
Exercise Guards White Blood Cells Against Aging
More Steps a Day Lead to Better Health
GASTROINTESTINAL PROBLEMS
HRT Use Raises Risk of Stomach Trouble
Gum Chewing May Speed Colon Surgery Recovery
Intestinal Bacteria Trigger Immune Response
GENERAL HEALTH
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Imaging Sheds Light on How Acupuncture Works
Should the FDA Regulate Tobacco?
HEAD & NECK
Ski Helmets Encouraged for All
Zen May Thicken Brain, Thwart Pain
Many Children Will Outgrow Headaches
HEALTH & TECHNOLOGY
Study Suggests Link Between Cell Phones and Brain Tumors
'Comfort Dogs' Come to Emotional Rescue
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HEARING
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Noise Hurts Men's Hearing More, Study Shows
HEART & CARDIOVASCULAR
Fatty Fish May Cut Heart Failure Risk in Men
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INFECTIOUS DISEASE
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INFERTILITY
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MEN'S HEALTH
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PAIN
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Alleviating Rheumatoid Arthritis
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PHYSICAL THERAPY
PREGNANCY
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Pregnant Women Exposed To Certain Pollutants Could Lower Childs IQ
Expectant Mom's Exercise Keeps Newborn's Birth Weight Down
SENIORS
Money May Matter, Health-Wise, in Old Age
Any Old Cane Won't Do
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SEXUAL HEALTH
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6 to 8 Hours of Shut-Eye Is Optimal for Health
Daylight Savings: Not a Bright Time for All
WOMEN'S HEALTH
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Woman in America Are Delaying Motherhood, Study Says
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The Juice From Beetroots May Boost Stamina

(HealthDay News) -- Beetroot juice can boost physical stamina and increase exercise endurance by up to 16 percent, a new British study shows.

The researchers found that nitrate in beetroot juice reduces oxygen uptake to a degree that can't be achieved by any other means. The findings could benefit endurance athletes, elderly people and those with cardiovascular, respiratory or metabolic diseases, the study authors suggest.

The study included eight men, aged 19 to 38, who drank 500 milliliters a day of organic beetroot juice for six consecutive days. They then completed a series of tests on an exercise bike. The same tests were repeated after the men drank the same amount of a placebo (blackcurrant cordial) for six days.

After drinking the beetroot juice, the men were able to cycle for an average of 11.25 minutes -- 92 seconds longer than after consuming the placebo drink. The men also had a lower resting blood pressure after they drank the beetroot juice, the researchers found.

The study was published Aug. 6 in the Journal of Applied Physiology.

"Our study is the first to show that nitrate-rich food can increase exercise endurance," corresponding author Andy Jones, a professor in the University of Exeter's School of Sport and Health Sciences, said in a news release from the university.

"We were amazed by the effects of beetroot juice on oxygen uptake because these effects cannot be achieved by any other known means, including training. I am sure professional and amateur athletes will be interested in the results of this research. I am also keen to explore the relevance of the findings to those people who suffer from poor fitness and may be able to use dietary supplements to help them go about their daily lives," Jones added.

He and his colleagues don't know the exact mechanism that causes nitrate in beetroot juice to increase stamina, but they suspect that nitrate may turn into nitric oxide in the body, leading to a reduction in oxygen uptake and making exercise less tiring.

SOURCES: University of Exeter, news release, Aug. 6, 2009