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Vitamin C could ease muscle fatigue in chronic obstructive pulmonary disease patients
Date:11/7/2013

C before the set, but both the study volunteers and the researchers monitoring the exercises didn't know which infusion the volunteers received. Two to three days later, the volunteers performed a second set of knee exercises after receiving the other type of infusion. Before and after they performed these exercises, the study subjects had blood drawn to test for antioxidant levels. Immediately after the exercises, the researchers measured a variety of other factors, including the volunteers' breathing and heart rate, blood pressure, feelings of exertion of breathlessness, and blood flow.

Results

The researchers found that during exercises, patients had significantly less muscle fatigue after receiving vitamin C and breathed better and slower. After vitamin C infusions, the volunteers also had significantly higher blood antioxidant activity than when they received only saline. Additionally, vitamin C infusions lowered their resting blood pressure and blood flow.

Importance of the Findings

These findings suggest that IV infusions of antioxidants, such as vitamin C, can curb the skeletal muscle fatigue that plagues COPD patients. They also provide further evidence that oxidative stress plays a critical role in the skeletal muscle dysfunction that many COPD patients experience. They suggest that antioxidants could eventually be used as a treatment for these problems.

"Targeting oxidative stress with some form of antioxidant therapy in a clinical setting may represent an important therapeutic avenue for patients with COPD," they write.


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Contact: Donna Krupa
dkrupa@the-aps.org
American Physiological Society
Source:Eurekalert

Page: 1 2

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