Blom P C, Høstmark A T, Vaage O, Kardel K R, Maehlum S
Department of Physiology, National Institute of Occupational Health, Oslo, Norway.
Med Sci Sports Exerc. 1987 Oct;19(5):491-6.
The effect of repeated ingestions of fructose, sucrose, and various amounts of glucose on muscle glycogen synthesis during the first 6 h after exhaustive bicycle exercise was studied. Muscle biopsies for glycogen determination were taken before and after exercise, and every second hour during recovery. Blood samples for plasma glucose and insulin determination were taken before and after exercise, and every hour during recovery. When 0.35 (low glucose: N = 5), 0.70 (medium glucose: N = 5), or 1.40 (high glucose: N = 5) g.kg-1 body weight of glucose were given orally at 0, 2, and 4 h after exercise, the rates of glycogen synthesis were (mean +/- SE) 2.1 +/- 0.5, 5.8 +/- 1.0, and 5.7 +/- 0.9 mmol.kg-1.h-1, respectively. When 0.70 g.kg-1 body weight of sucrose (medium sucrose: N = 5), or fructose (medium fructose: N = 7) was ingested accordingly, the rates were 6.2 +/- 0.5 and 3.2 +/- 0.7 mmol.kg-1.h-1. Average plasma glucose level during recovery were similar in low glucose, medium glucose, and high glucose groups (5.76 +/- 0.24, 6.31 +/- 0.64, and 6.52 +/- 0.24 mM), while average plasma insulin levels were higher with higher glucose intake (16 +/- 1, 21 +/- 3, and 38 +/- 4 microU.ml-1).(ABSTRACT TRUNCATED AT 250 WORDS)
研究了在力竭性自行车运动后的最初6小时内，重复摄入果糖、蔗糖和不同量葡萄糖对肌肉糖原合成的影响。在运动前后以及恢复过程中每隔两小时采集肌肉活检样本用于测定糖原。在运动前后以及恢复过程中每小时采集血样用于测定血浆葡萄糖和胰岛素。运动后0、2和4小时分别口服0.35（低糖：N = 5）、0.70（中糖：N = 5）或1.40（高糖：N = 5）g·kg-1体重的葡萄糖时，糖原合成速率分别为（均值±标准误）2.1±0.5、5.8±1.0和5.7±0.9 mmol·kg-1·h-1。相应摄入0.70 g·kg-1体重的蔗糖（中蔗糖：N = 5）或果糖（中果糖：N = 7）时，速率分别为6.2±0.5和3.2±0.7 mmol·kg-1·h-1。低糖、中糖和高糖组恢复过程中的平均血浆葡萄糖水平相似（5.76±0.24、6.31±0.64和6.52±0.24 mM），而随着葡萄糖摄入量增加，平均血浆胰岛素水平升高（16±1、21±3和38±4 μU·ml-1）。（摘要截断于250字）
