Murakami T, Shimomura Y, Fujitsuka N, Sokabe M, Okamura K, Sakamoto S
Department of Bioscience, Nagoya Institute of Technology, Gokiso, Japan.
J Appl Physiol (1985). 1997 Mar;82(3):772-5. doi: 10.1152/jappl.1997.82.3.772.
This study investigated the effect of long-term intake of a fructose diet and exercise training on glycogen content in liver and skeletal muscle in female rats. Thirty-six rats (8 wk old) were divided into two dietary groups and were fed with a control (chow) diet or fructose diet (containing 20%) fructose) for 12 wk. During this period, one-half of the rats in each dietary group were trained by using a motor-driven treadmill (running speed of 25 m/min and duration of 90 min/day, 5 days/wk). The liver glycogen was increased by intake of a fructose diet and exercise training, and the content was in the following order: control-diet and sedentary rats < fructose-diet and sedentary rats < or = control-diet and trained rats < fructose-diet and trained rats in the ratio of 1:3.4:3.6:5.0. The glycogen content in gastrocnemius muscle showed the same trend as that in liver; the ratio was 1:1.3:1.3:1.6. These results indicate that both long-term intake of the fructose diet and exercise training synergistically increased glycogen in both tissues.
本研究调查了长期摄入果糖饮食和运动训练对雌性大鼠肝脏和骨骼肌糖原含量的影响。将36只8周龄的大鼠分为两个饮食组，分别给予对照（普通）饮食或果糖饮食（含20%果糖），持续12周。在此期间，每个饮食组的一半大鼠使用电动跑步机进行训练（跑步速度为25米/分钟，每天持续90分钟，每周5天）。果糖饮食和运动训练均可增加肝脏糖原，其含量顺序如下：对照饮食且久坐的大鼠＜果糖饮食且久坐的大鼠≤对照饮食且训练的大鼠＜果糖饮食且训练的大鼠，比例为1:3.4:3.6:5.0。腓肠肌中的糖原含量与肝脏呈现相同趋势；比例为1:1.3:1.3:1.6。这些结果表明，长期摄入果糖饮食和运动训练均可协同增加这两种组织中的糖原。
