New Zealand blackcurrant (NZBC) extract enhanced cycling-induced fat oxidation in female en-durance athletes. We examined in recreationally active females the effects of NZBC extract on physiological and metabolic responses by moderate-intensity walking and the relationship of fat oxidation changes with focus on body composition parameters. Twelve females (age: 21±2 yrs, BMI: 23.6±3.1 kg·m-2) volunteered. Bioelectrical bioimpedance analysis was used for body composition measurements. Resting metabolic equivalent (1-MET) was 3.31±0.66 ml·kg-1·min-1. Participants completed an incremental walking test with oxygen uptake measurements to indi-vidualize the treadmill walking speed at 5-MET. In a randomized, double-blind, cross-over de-sign, the 30-min morning walks were in the same phase of each participant’s menstrual cycle. No changes by NZBC extract were observed for walking-induced heart rate, minute ventilation, oxygen uptake and carbon dioxide production. NZBC extract enhanced fat oxidation (10 re-sponders, range: 10-66%). There was a significant correlation for changes in fat oxidation with body mass index, body fat% in legs, arms and trunk, and a trend with fat oxidation at rest but not with body mass and habitual anthocyanin intake. The NZBC extract responsiveness of walking-induced fat oxidation is body composition-dependent and higher in young-adult fe-males with higher body fat% in legs, arms and trunk.