Oxidation of combined ingestion of glucose and sucrose during exercise
Oxidation of combined ingestion of glucose and sucrose during exercise
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DOI：
10.1016/j.metabol.2004.12.004
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发表时间：
2005-05-01
影响因子：
9.8
通讯作者：
Jeukendrup, AE
中科院分区：
文献类型：
--
作者：
Jentjens, RLPG;Shaw, C;Jeukendrup, AE
该研究的第一个目的是检验以1.2 g/min的摄取率同时摄入葡萄糖和蔗糖是否会比单独摄入等量的葡萄糖或蔗糖导致更高的氧化率。本研究的第二个目的是研究当葡萄糖和蔗糖的混合物以高速率（2.4 g/min）摄入时，是否会导致外源性CHO氧化速率高于1.2至1.3 g/min。8名训练有素的自行车手(最大耗氧量：64 +/- 2 mL (.) kg（-1) min（-1）平均+/- SE）按随机顺序进行5次运动试验。每次试验包括以50%最大功率输出（63% +/- 2%最大耗氧量）进行120分钟的循环，同时受试者接受含有1.2 g/min葡萄糖（GLU）、1.2 g/min蔗糖（SUC）、0.6 g/min葡萄糖+ 0.6 g/min蔗糖（M-GLU+SUC）、1.2 g/min葡萄糖+ 1.2 g/min蔗糖（H-GLU+SUC）或水（WAT）的溶液。H-GLU+SUC试验的外源性CHO氧化峰值（1.20 0.07 g/min）显著高于对照组(P
The first purpose of the study was to examine whether combined ingestion of glucose and sucrose at an intake rate of 1.2 g/min would lead to higher oxidation rates compared with the ingestion of an isocaloric amount of glucose or sucrose alone. The second aim of the study was to investigate whether a mixture of glucose and sucrose when ingested at a high rate (2.4 g/min) would result in exogenous CHO oxidation rates higher than 1.2 to 1.3 g/min.Eight trained cyclists (maximal oxygen consumption: 64 +/- 2 mL (.) kg(-1) min(-1) mean +/- SE) performed 5 exercise trials in random order. Each trial consisted of 120 minutes of cycling at 50% maximum power output (63% +/- 2% maximal oxygen consumption), whereas subjects received a solution providing either 1.2 g/min of glucose (GLU), 1.2 g/min of sucrose (SUC), 0.6 g/min of glucose + 0.6 g/min of sucrose (M-GLU+SUC), 1.2 g/min of glucose + 1.2 g/min of sucrose (H-GLU+SUC), or water (WAT).Peak exogenous CHO oxidation rates in the H-GLU+SUC trial (1.20 0.07 g/min) were significantly higher (P