Davis J M, Jackson D A, Broadwell M S, Queary J L, Lambert C L
Department of Exercise Science, School of Public Health, University of South Carolina, Columbia 29208, USA.
Int J Sport Nutr. 1997 Dec;7(4):261-73. doi: 10.1123/ijsn.7.4.261.
The effects of ingesting carbohydrate drinks on fatigue during intermittent, high-intensity cycling in men and women were determined. Physically active but untrained women (n = 7) and men (n = 9) completed one practice trial and two experimental sessions separated by 1 week. Sessions consisted of repeated 1-min cycling bouts on a bicycle ergometer at 120-130% VO2max separated by 3 min rest until fatigue. Carbohydrate (CHO) or placebo (P) beverages (4 ml.kg body weight-1) were ingested immediately before exercise (18% CHO) and every 20 min during exercise (6% CHO). Plasma glucose and insulin were higher, RPE for the legs was lower, and time to fatigue was longer in CHO than P. Men's and women's responses were not different for any variable measured. These data suggest a beneficial role of CHO drinks on performance of intermittent, high-intensity exercise in men and women.
研究了摄入碳水化合物饮料对男性和女性在间歇性高强度骑行过程中疲劳的影响。身体健康但未经训练的女性（n = 7）和男性（n = 9）完成了一次练习试验和两次间隔1周的实验环节。实验环节包括在自行车测力计上以最大摄氧量（VO2max）的120%-130%进行重复的1分钟骑行，每次骑行之间休息3分钟，直至疲劳。在运动前即刻（18%碳水化合物）以及运动期间每20分钟（6%碳水化合物）摄入碳水化合物（CHO）或安慰剂（P）饮料（4毫升/千克体重）。与安慰剂组相比，碳水化合物组的血浆葡萄糖和胰岛素水平更高，腿部的主观用力程度（RPE）更低，疲劳时间更长。在测量的任何变量上，男性和女性的反应均无差异。这些数据表明碳水化合物饮料对男性和女性间歇性高强度运动的表现具有有益作用。
