Two weeks daily intake of anthocyanin-rich New Zealand blackcurrant extract enhances whole-body fat oxidation during supine rest in healthy males

M. Willems, P. Bilgiç, S. Montanari, M. Şahin
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引用次数: 1

Abstract

Introduction: Increase in exercise-induced fat oxidation has been observed with a 2-week daily intake of New Zealand blackcurrant (NZBC) extract. We examined for supine rest the effects of a 2-week daily intake of NZBC extract on physiological and metabolic parameters in relation to body fat%.Methods: Healthy active men (n=16, age: 24.1±6.0 yr, body mass: 78.2±15.6 kg, BMI: 24.7±4.2 kg·m-2) volunteered. NZBC extract (210 mg of anthocyanins) was consumed with breakfast with a14-day washout. The final ingestion was 2 hours before testing. Physiological and metabolic responses were measured during supine rest (2x10 min), and observations with the lowest 10-minute ventilation were analyzed. Bioelectrical impedance analysis was used to measure body fat%.Results: During supine rest, a 14-day daily intake of NZBC extract had no effect on heart rate, minute ventilation, oxygen uptake, carbon dioxide production, and energy expenditure. However, a 14-day daily intake of NZBC extract decreased the respiratory exchange ratio (baseline: 0.840±0.045, 14-day: 0.820±0.058, P=0.03), increased fat oxidation (baseline: 0.079±0.03, 14-day: 0.088±0.043 g·min-1, P=0.05), and decreased carbohydrate oxidation (baseline: 0.178±0.067, 14-day: 0.143±0.071 g·min-1, P=0.03) during supine rest. Nine of the 16 participants had increased fat oxidation by over 10% during supine rest. For those nine participants, the increases were 26±16%. We did not observe a significant correlation between body fat% and absolute and percentual changes in fat oxidation.Conclusions: In a healthy male cohort, daily intake of New Zealand blackcurrant extract for two weeks was able to increase fat oxidation during supine rest. Daily intake of New Zealand blackcurrant extract may be an effective anthocyanin-rich supplement for managing body composition and body weight.Keywords: New Zealand blackcurrant; anthocyanins; metabolic equivalent; rest; fat oxidation; respiratory exchange ratio
两周每天摄入花青素丰富的新西兰黑加仑提取物提高全身脂肪氧化在仰卧休息期间健康的男性
导读:每天摄入新西兰黑加仑(NZBC)提取物两周后,观察到运动引起的脂肪氧化增加。我们检查了仰卧休息时每天摄入2周NZBC提取物对与体脂%相关的生理和代谢参数的影响。方法:健康运动男性16例,年龄24.1±6.0岁,体重78.2±15.6 kg, BMI 24.7±4.2 kg·m-2。早餐时服用NZBC提取物(花青素210毫克),并进行14天的洗脱。最后一次摄入是在测试前2小时。在仰卧休息(2x10 min)时测量生理和代谢反应,并分析最低10分钟通气时的观察结果。采用生物电阻抗分析法测定体脂率。结果:在仰卧休息期间,每天摄入14天NZBC提取物对心率、分钟通气量、摄氧量、二氧化碳产生和能量消耗没有影响。然而,每天摄入14天NZBC提取物降低了仰卧休息时的呼吸交换率(基线:0.840±0.045,14天:0.820±0.058,P=0.03),增加了脂肪氧化(基线:0.079±0.03,14天:0.088±0.043 g·min-1, P=0.05),降低了碳水化合物氧化(基线:0.178±0.067,14天:0.143±0.071 g·min-1, P=0.03)。16名参与者中有9人在仰卧休息时脂肪氧化增加了10%以上。对于这9名参与者,增加了26±16%。我们没有观察到体脂百分比与脂肪氧化的绝对和百分比变化之间的显著相关性。结论:在健康男性队列中,每天摄入新西兰黑加仑提取物两周能够增加仰卧休息时的脂肪氧化。每天摄入新西兰黑加仑提取物可能是一种有效的富含花青素的补充剂,可以控制身体成分和体重。关键词:新西兰黑加仑;花青素;代谢当量;休息;脂肪氧化;呼吸交换率
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