- Potassium nitrate supplementation may not significantly improve exercise capacity or quality of life in heart failure with preserved ejection fraction patients.
- The trial involved 84 participants with a median age of 68 years and predominantly female.
- Levels of blood nitric oxide metabolites were elevated with potassium nitrate supplementation.
- Various measurements, including peak oxygen uptake and total work performed, did not show significant differences with potassium nitrate supplementation.
- The study was conducted between October 2016 and July 2022 at multiple institutions.
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