Effect of New Zealand Blackcurrant on Blood Pressure, Cognitive Function and Functional Performance in Older Adults
2020
Cook, Matthew David | Sandu, BSc (Hons) Amber Kaur | Joyce, PhD Jennifer Patricia
New Zealand blackcurrant (NZBC) can increase exercise performance in young adults, potentially by anthocyanin-induced cardiovascular function alterations and increased blood flow, however, effects upon blood pressure, functional exercise performance and cognitive function in older adults is unknown. In a randomized, double-blind, placebo-controlled, cross-over design, 14 older adults (age: 69 ± 4 years, height: 172 ± 9 cm, body mass: 85 ± 12) ingested NZBC extract (600 mg·day⁻¹ CurraNZ™) or placebo (PL, 600 mg microcrystalline cellulose) for 7-days (7-day washout between conditions). On day-7, 2-hours following consumption of the capsules, resting blood pressure, cognitive function (Cambridge neuropsychological test automated battery) and 6-minute walk test performance and were measured. Intake of NZBC caused a decrease (p < 0.05) in systolic (PL: 136 ± 14; NZBC: 130 ± 12 mmHg) and diastolic (PL: 84 ± 11; NZBC 78 ± 6 mmHg) blood pressure. There was no effect on 6-minute walk performance or cognitive function variables. Future research should address optimization of intake and examine cardiovascular responses during exercise.
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