Dose effects of New Zealand blackcurrant on substrate oxidation and physiological responses during prolonged cycling.

Purpose: It has been previously shown that New Zealand blackcurrant (NZBC) extract increased fat oxidation during short duration cycling. The present study examined the effect of different doses of NZBC extract on substrate oxidation and physiological responses during prolonged cycling.

Methods: Using a randomized counterbalanced Latin-square design, 15 endurance-trained male cyclists (age: 38 ± 12 years, height: 187 ± 5 cm, body mass: 76 ± 10 kg, [Formula: see text]: 56 ± 8 mL kg min, and mean ± SD) completed four separate 120-min cycling bouts at 65% [Formula: see text] after ingesting no dose, or one of three doses (300, 600, or 900 mg day) of NZBC extract (CurraNZ™) for 7 days.

Cardiovascular function during supine rest in endurance-trained males with New Zealand blackcurrant: a dose-response study.

Purpose: Blackcurrant contains anthocyanins that could alter cardiovascular function and reduce cardiovascular disease risk. We examined dose responses of New Zealand blackcurrant (NZBC) extract on cardiovascular function during supine rest.

Methods: Fifteen endurance-trained male cyclists (age: 38 ± 12 years, height: 178 ± 5 cm, body mass: 76 ± 10 kg, [Formula: see text]: 56 ± 8 mL kg min, mean ± SD) were randomly assigned using a counterbalanced Latin square design to complete four conditions, a control of no NZBC, or one of three doses (300, 600 or 900 mg day) of NZBC extract (CurraNZ™) for 7-days with a 14-day washout.