Chung Nana, Lim Kiwon
J Exerc Nutrition Biochem. 2019 Sep 30;23(3):1-12. doi: 10.20463/jenb.2019.0017.
The purpose of this study was to determine whether different types of carbohydrate diets with or without exercise changes energy metabolism at rest and during exercise.
To minimize differences in food and energy intake between experimental groups, mice were pair-fed. After 1 week of adaptation, 40 male ICR mice (6 weeks old) were randomly divided into four groups: Sta. (high fat + high starch), Scu. (high fat + high sucrose), StaEX. (high fat + high starch + exercise), and SucEX. (high fat + high sucrose + exercise). StaEX. and ScuEX. groups underwent training by running on a treadmill five times a week. After 10 weeks of training, energy metabolism was measured for 24 h and during a 1 h exercise period.
The final body weight showed no significant difference between the groups. However, the weight of abdominal tissues (epididymal, perirenal, and mesenteric adipose tissue) in training groups was markedly decreased following 10 weeks of training. Results of all energy metabolism (24 h at rest and during 1 h of exercise) showed no significant interactions between diet and exercise. A brief summary of the results of the energy metabolism is that the metabolism related indicators over 24 h were more affected by the dietary pattern than the exercise but during the 1 h of exercise, training had more effect on energy metabolism than diet.
Our findings confirm that: (a) the type of carbohydrates included in the diet influence the metabolic responses over 24 h, (b) training had more effect on energy metabolism than diet during 1 h of exercise, (c) both results; abdominal adipose tissue weight and fat oxidation during exercise are suggestive for a beneficial effect of moderate physical activity on weight maintenance.
本研究旨在确定不同类型的碳水化合物饮食（无论是否结合运动）是否会改变静息及运动时的能量代谢。
为尽量减少实验组之间食物和能量摄入的差异，对小鼠进行配对喂食。适应1周后，将40只6周龄雄性ICR小鼠随机分为四组：Sta.（高脂肪 + 高淀粉）、Scu.（高脂肪 + 高蔗糖）、StaEX.（高脂肪 + 高淀粉 + 运动）和SucEX.（高脂肪 + 高蔗糖 + 运动）。StaEX.组和ScuEX.组每周在跑步机上跑步训练5次。训练10周后，测量24小时及1小时运动期间的能量代谢。
各组最终体重无显著差异。然而，训练组的腹部组织（附睾、肾周和肠系膜脂肪组织）重量在训练10周后明显降低。所有能量代谢结果（静息24小时及运动1小时期间）显示饮食与运动之间无显著交互作用。能量代谢结果的简要总结是，24小时的代谢相关指标受饮食模式的影响大于运动，但在1小时运动期间，训练对能量代谢的影响大于饮食。
我们的研究结果证实：（a）饮食中所含碳水化合物的类型会影响24小时的代谢反应，（b）在1小时运动期间，训练对能量代谢的影响大于饮食，（c）腹部脂肪组织重量和运动期间脂肪氧化这两个结果均表明适度体育活动对体重维持有有益作用。
