Publications by authors named "Christina Koehl"

Background & Aims: Few studies have explored the prolonged effects of dietary nitrate on vascular health. This pilot study tested the effects of prolonged consumption (13 weeks) of a range of doses of dietary nitrate (NO), provided as beetroot juice (BJ), on blood pressure (BP) and endothelial function in overweight and obese older participants.

Methods And Results: Sixty-two overweight or obese older participants (60-75 years) were randomized to the following interventions: (1) high NO (2) medium NO, (3) low NO, or (4) placebo.

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Nitrate-rich food increases nitric oxide (NO) production and may have beneficial effects on vascular, metabolic, and brain function. This pilot study tested the effects of prolonged consumption of a range of doses of dietary nitrate (NO), provided as beetroot juice, on cognitive function and cerebral blood flow (CBF) in overweight and obese older participants. The study had a 13-week single-blind, randomised, parallel design, and 62 overweight and obese older participants (aged 60 to 75 years) received the following interventions: (1) high NO (2 × 70 mL beetroot juice/day) (2) medium NO (70 mL beetroot juice/day), (3) low NO (70 mL beetroot juice on alternate days), or (4) placebo (70 mL of NO-depleted beetroot juice on alternate days).

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Nitrate-rich food can increase nitric oxide production and improve vascular and brain functions. This study examines the feasibility of a randomised controlled trial (RCT) testing the effects of prolonged consumption of different doses of dietary nitrate (NO) in the form of beetroot juice (BJ) in overweight and obese older participants. A single-blind, four-arm parallel pilot RCT was conducted in 62 overweight and obese (30.

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Sub-Saharan African countries are experiencing an alarming increase in hypertension prevalence. This study evaluated the feasibility and acceptability of nitrate-rich beetroot and folate supplementation, alone or combined, for the reduction of blood pressure (BP) in Tanzanian adults with elevated BP. This was a three-arm double-blind, placebo-controlled, parallel randomised clinical trial.

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