(HealthDay News) — Beetroot juice improves submaximal aerobic endurance and blood pressure in elderly patients with heart failure with preserved ejection fraction, according to a small study publishedin JACC: Heart Failure.
Joel Eggebeen, from the Wake Forest University in Winston-Salem, North Carolina, and colleagues treated 20 patients with heart failure with preserved ejection fraction (average age, 69 years ) in an initial crossover design comparing a single, acute dose of beetroot juice (6.1 mmol nitrate) to a nitrate-depleted, placebo beetroot juice. During the second week, all patients consumed beetroot juice for an average of 7 days of daily dosing.
The researchers found that submaximal aerobic endurance improved 24% after 1 week of daily beetroot juice dosing (P=.02), but was not affected by the single, acute dose of beetroot juice, compared with placebo. Both dosing schemes significantly reduced resting systolic blood pressure and increased plasma nitrate and nitrite.
“One week of daily dosing with beetroot juice (6.1 mmol inorganic nitrate) significantly improves submaximal aerobic endurance and blood pressure in [elderly patients with heart failure with preserved ejection fraction],” the researchers wrote.
Several authors disclosed financial ties to the nutrition and pharmaceutical industries.