MUSCLE GLYCOGEN DURING PROLONGED SEVERE EXERCISE
MUSCLE GLYCOGEN DURING PROLONGED SEVERE EXERCISE
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DOI：
10.1111/j.1748-1716.1967.tb03719.x
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发表时间：
1967-01-01
期刊：
影响因子：
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通讯作者：
SALTIN, B
中科院分区：
文献类型：
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作者：
HERMANSEN, L;HULTMAN, E;SALTIN, B
10 名训练有素的受试者和 10 名未经训练的受试者在自行车测力计上努力完成力竭，工作负荷平均为个人最大有氧功率的 77 (76-87)%。从工作开始到力竭期间，每隔一定时间间隔测定工作肌肉使用的糖原（股四头肌外侧部分的活组织检查）和燃烧的碳水化合物（Vo2 和 RQ）。在约 3 g 碳水化合物/分钟的燃烧速率（RQ 约 0.9 或更高）和静息肌肉中糖原的平均值为 1.6 (l.l-2.5)g/100 湿肌肉时，有效工作时间约为 85 分钟。对于未经训练的人来说 90 分钟。对于受过训练的科目。在力竭运动结束时，未经训练的受试者的糖原含量平均为 0.06 g，训练过的受试者的糖原含量为 0.12 g/100 g 湿肌肉。人们发现，利用的糖原和燃烧的碳水化合物之间存在密切关系，并且在相对高的工作负荷下，运动肌肉中的糖原储存很可能会限制长时间剧烈工作的能力。
Ten well trained and 10 untrained subjects worked to complete exhaustion on a bicycle ergometer with work loads averaging 77 (76-87)% of their individual maximal aerobic power. Determinations of glycogen used by working muscles (biopsy of lateral portion of the quadriceps femoris muscles) and of combusted carbohydrate (Vo2 and RQ) were performed at certain intervals from the start of work to exhaustion. At a combustion rate of about 3 g carbohydrate/min (RQ around 0.9 or higher) and at average values for glycogen in resting muscle of 1.6 (l.l-2.5)g/100 wet muscle, the effective work time was around 85 min. for the untrained and 90 min. for the trained subjects. At the end of the exhaustive exercise the glycogen content averaged 0.06 g in the untrained and 0.12 g/100 g wet muscle in the trained subjects. A close relationship between utilized glycogen and combusted carbohydrate was found, and it seems highly probable that at high relative workloads primarily the glycogen stores in the exercising muscles will limit the capacity for prolonged strenuous work.