Circulation. Heart failure
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Randomized Controlled Trial
The effects of vitamin D supplementation on physical function and quality of life in older patients with heart failure: a randomized controlled trial.
Low 25-hydroxyvitamin D levels, commonly found in older patients with heart failure, may contribute to the chronic inflammation and skeletal myopathy that lead to poor exercise tolerance. We tested whether vitamin D supplementation of patients with heart failure and vitamin D insufficiency can improve physical function and quality of life. ⋯ Vitamin D supplementation did not improve functional capacity or quality of life in older patients with heart failure with vitamin D insufficiency. Clinical Trial Registration- www.controlled-trials.com. Identifier: ISRCTN51372896.