跑步机运动的家禽（家鸡）对能量底物的利用：血糖

Utilisation of energy substrates in treadmill-exercised domestic fowl (Gallus gallus domesticus): blood glucose.

Brackenbury J H, Vincent R

Sub-department of Veterinary Anatomy, University of Cambridge, England.

Br Poult Sci. 1988 Sep;29(3):457-68. doi: 10.1080/00071668808417072.

Abstract

Blood glucose concentration, glucose turnover and gas exchange were monitored in adult male domestic fowl at rest and during 90 min of continuous treadmill exercise. 2. During exercise oxygen consumption increased to about three times its resting value. Blood glucose concentration fell by 26% by the end of exercise. 3. Blood glucose turnover was not altered by exercise and oxidation showed only a moderate increase (35%). Glucose oxidation accounted for 23% of the total energy expenditure at rest and this value fell to 10% during exercise. At the same time the plasma free fatty acid concentration rose to three times its resting value suggesting an increased mobilisation of this substrate. 4. It is concluded that during exercise of this relatively moderate intensity glucose is a quantitatively minor fuel for the working muscles.

摘要

对成年雄性家禽在静息状态和持续90分钟跑步机运动期间的血糖浓度、葡萄糖周转率和气体交换进行了监测。2. 运动期间，耗氧量增加至静息值的约三倍。运动结束时血糖浓度下降了26%。3. 运动未改变血糖周转率，氧化仅适度增加（35%）。葡萄糖氧化在静息时占总能量消耗的23%，运动期间该值降至10%。与此同时，血浆游离脂肪酸浓度升至静息值的三倍，表明该底物的动员增加。4. 得出的结论是，在这种相对中等强度的运动期间，葡萄糖在工作肌肉中是一种数量上较少的燃料。