Keizer H A, Kuipers H, van Kranenburg G, Geurten P
Int J Sports Med. 1987 Apr;8(2):99-104. doi: 10.1055/s-2008-1025649.
The effect of forced liquid (L) or solid (S) carbohydrate (CHO)-rich feedings on plasma glucose, insulin, and glycogenesis after glycogen depletion was investigated. The relationship between glycogen restoration and maximal physical working capacity (MPWC) was studied as well. Eight males performed two experiments, with 2 weeks interval, on a bicycle ergometer. In each experiment, MPWC was determined in a graded test, which was immediately followed by interval work until exhaustion. After exercise cessation (EC), the subjects started to consume a standardized amount of concentrated L or CHO-rich food. Insulin and glucose concentration in blood were determined. Muscle glycogen was determined before, immediately after, 5 h after, and 22 h after EC. MPWC was determined again 22 h after EC. Four subjects performed a third experiment, in which solid food consumption was left ad libitum (AL). A rapid glycogen repletion was found 5 h after EC, i.e., from 72 +/- 40 to 198 +/- 38 mmol/kg in the S, and from 69 +/- 39 to 192 +/- 40 mmol/kg in the L experiment. The higher plasma glucose and insulin levels (P less than 0.05) during the 5 h after EC in the S experiments did not elicit a difference in glycogen repletion. Glycogen synthesis rate in the AL experiment was lower (P less than 0.05) than in the L and S experiments. Glycogen restoration in the L and S experiments was complete 22 h after depletion. However, despite repletion of glycogen, MPWC was decreased (P less than 0.05) in both experiments.(ABSTRACT TRUNCATED AT 250 WORDS)
研究了强制给予富含液体（L）或固体（S）碳水化合物（CHO）的食物对糖原耗竭后血浆葡萄糖、胰岛素和糖原生成的影响。同时也研究了糖原恢复与最大身体工作能力（MPWC）之间的关系。八名男性在自行车测力计上进行了两项实验，间隔2周。在每个实验中，通过分级测试确定MPWC，随后立即进行间歇运动直至疲惫。运动停止（EC）后，受试者开始食用标准化量的浓缩L或富含CHO的食物。测定血液中的胰岛素和葡萄糖浓度。在EC前、EC后即刻、EC后5小时和22小时测定肌肉糖原。在EC后22小时再次测定MPWC。四名受试者进行了第三个实验，其中固体食物的摄入量为随意摄取（AL）。在EC后5小时发现糖原快速补充，即在S实验中从72±40 mmol/kg增至198±38 mmol/kg，在L实验中从69±39 mmol/kg增至192±40 mmol/kg。S实验中EC后5小时较高的血浆葡萄糖和胰岛素水平（P<0.05）并未引起糖原补充的差异。AL实验中的糖原合成速率低于L和S实验（P<0.05）。在L和S实验中，糖原耗竭后22小时糖原恢复完成。然而，尽管糖原得到补充，但在两个实验中MPWC均降低（P<0.05）。（摘要截断于250字）
