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විවෘත සංවාද - open discussions => කතා බහ | general => Topic started by: sithari on September 16, 2006, 09:53:44 AM

Title: Vitamin C after heart attack improves exercise ability
Post by: sithari on September 16, 2006, 09:53:44 AM
NEW YORK - Vitamin C (ascorbic acid) supplements improve the response of the sympathetic nervous system during exercise in patients who have had a heart attack (myocardial infarction), according to a report in the International Journal of Cardiology.

The sympathetic nervous system is a part of the nervous system that controls heart rate and other involuntary body responses. Patients with heart disease sometimes have poor sympathetic function, the authors explain, but whether or not antioxidants can improve this complication remains unclear.

Dr. Kazuyo Kato and colleagues from Nippon Medical School, Tokyo, investigated whether ascorbic acid influenced the sympathetic response to exercise in 21 men who were studied at least one month after a myocardial infarction.

The participants underwent symptom-limited exercise testing twice, once 2 hours after oral administration of 2 grams of ascorbic acid and once without the supplement.

Although resting blood pressure and heart rate did not differ with or without ascorbic acid, the authors report, the heart rate response to peak exercise was significantly higher, an indication of better heart function, after ascorbic acid than without ascorbic acid.

- Reuters