6周不同强度间歇性运动对肥胖大鼠体成分的影响*

doi:10.12047/j.cjap.5789.2019.069

摘要/Abstract

摘要： 目的:探讨不同强度间歇性运动对肥胖大鼠身体机能影响,为肥胖症的防治提供依据。方法:80只SD大鼠随机分成普通膳食组(n=20)和高脂膳食组(n=60),适应性喂养8周后,筛选普通膳食大鼠8只和高脂膳食肥胖大鼠32只,用于后续实验。将实验大鼠随机分为5组(n=8):普通对照组(CS),普通饲料喂养,不做任何运动;高脂安静组(HS):高脂饲料喂养,不作任何运动;高脂持续运动组(HC):进行60 min/d×5天/周×6周;高脂长时间低频率间歇性运动组(HLL):进行30 min/次×2次/天(间歇6 h)×5天/周×6周;高脂短时间高频率间歇性运动组(HSH):进行20 min/次×3次/天(间歇3 h)×5天/周×6周,各运动组大鼠在跑台上训练强度均为25 m/min。6周后,各组大鼠称重、检测RMR、FBG、TG等生化指标,并测量体脂及肌肉重量。结果:实验前,各组大鼠之间RMR、FBG、TG指标无统计学差异(P＞0.05);HSH、HLL、HC、HS组体重均明显高于CS组(P＜0.05)。实验后,HSH、HLL、HC组RMR均明显高于HS、CS组(P＜0.05),但HSH、HLL、HC组之间无显著性差异(P＞0.05);HS组体重高于CS组(P＜0.05),HSH、HLL、HC组体重明显低于HS组(P＜0.05),但三组之间无显著性差异(P＞0.05);HSH、HLL、HC组之间PF、EF、PF/W、EF/W均明显低于HS组(P＜0.01),而三者之间无统计学差异(P＞0.05);各组大鼠GM、QF均无显著性差异(P＞0.05),HSH、HLL、HC组之间GM/W、QF/W高于HS组(P＜0.05),而HSH、HLL、HC组之间无显著性差异(P＞0.05);HSH、HLL、HC组FBG、TG均明显低于CS、HS组(P＜0.05),但与HS组差异更显著(P＜0.01),而各训练组之间无显著性差异(P＞0.05)。结论:6周不同强度间歇性运动对肥胖大鼠体成分产生了良好的干预效果,且短时间高频率间歇性运动(HSH)效果可能更好。

关键词: 大鼠, 间歇性运动, 体成分, 肥胖, 静息代谢率

Abstract: Objective: To investigate the effects of different intensity intermittent exercise on the body function of obese rats, and to provide basis for the prevention and treatment of obesity. Methods: Eighty SD rats were randomly divided into normal diet group (n=20) and high-fat diet group (n=60). After adaptive feeding for 8 weeks, 8 normal diet rats and 32 high-fat obese rats were selected for follow-up experiments. The experimental rats were randomly divided into 5 groups (n=8): control diet-sedentary (CS),with ordinary feed and without any exercise; high diet-sedentary (HS), with high-fat feed feeding and without any exercise; high diet-continual exercise(HC), 60 min/day,5 days/week with 6 weeks; high diet-long time-low frequency interval exercise(HLL), 30 min/time,twice/day (intermittent 6 h), 5 days/week with 6 weeks; high diet-short time-high frequency interval exercise(HSH), 20 min/ time, 3 times/d (intermittent 3 h), 5 days/week with 6 weeks. The training intensity of rats in each exercise group was 25 m/min. After 6 weeks, rats in each groups were weighed, and resting metabolic rate(RMR), fasting blood glucose(FBG), triglyceride(TG) and other biochemical indexes were detected, and fat and muscle weight were measured. Results: Before experiment, there were no significant differences in RMR, FBG and TG in each groups(P＞0.05).The body weight of HSH, HLL, HC and HS groups was higher than that of CS group (P＜0.05). After the experiment, RMR of the HSH,HLL and HC groups was significantly higher than that of HS and CS groups (P＜0.05), but without significant difference among the HSH,HLL and HC groups (P＞0.05).The body weight of HSH, HLL and HC groups was significantly lower than that of HS group (P＜0.05), but the three groups was not significant (P＞0.05); perirenal fat(PF), idymis fat(EF), perirenal fat/weight(PF/W) and epididymis fat/weight(EF/W) of HSH, HLL, HC group were significantly lower than those of HS group (P＜0.01), while there was no statistical difference among the three groups (P＞0.05). There was no significant difference in gastrocnemius(GM) and quadricep(QF) of each group (P＞0.05), gastrocnemius/weight(GM/W) and quadriceps/weight (QF/W) in HSH,HLL and HC groups were higher than those of HS group (P＜0.05),while there was no significant difference among HSH,HLL and HC groups (P＞0.05);FEB,TG of HSH,HLL,HC group were lower than those of CS and HS group (P＜0.05),but the difference with HS group was more significant (P＜0.01),there was no significant difference among training groups(P＞0.05).Conclusion: 6 weeks of intermittent exercise of different intensity had a good intervention effect on the body composition of obese rats, and high diet-short time-high frequency interval exercise (HSH) may be more effective.

Key words: rats, aerobic exercise, body composition, obesity, resting metabolic rate

赵述强, 时洪举, 郑宁宁. 6周不同强度间歇性运动对肥胖大鼠体成分的影响^*[J]. 中国应用生理学杂志, 2019, 35(4): 326-330.

ZHAO Shu-qiang, SHI Hong-ju, ZHENG Ning-ning. Effects of different intensity interval exercise of 6 weeks on body composition of obese rats[J]. CJAP, 2019, 35(4): 326-330.

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6周不同强度间歇性运动对肥胖大鼠体成分的影响^*

Effects of different intensity interval exercise of 6 weeks on body composition of obese rats

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