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补充 L-谷氨酰胺对离心运动损伤的股四头肌肌电图活动的影响。

Effect of L-glutamine supplementation on electromyographic activity of the quadriceps muscle injured by eccentric exercise.

机构信息

Department of Exercise Physiology Faculty of Physical Education and Sport Science, University of Guilan, Rasht, Iran.

出版信息

Iran J Basic Med Sci. 2013 Jun;16(6):808-12.

PMID:23997909
原文链接:https://pmc.ncbi.nlm.nih.gov/articles/PMC3758038/
Abstract

OBJECTIVE(S): The purpose of the present study was to examine the effects of L-glutamine on electromyographic (EMG) activity of the quadriceps muscle injured by eccentric exercise (EE).

MATERIALS AND METHODS

Seventeen healthy men (age: 22.35±2.27 yr; body mass: 69.91±9.78 kg; height: 177.08±4.32 cm) were randomly and double-blind study with subjects assigned to either an L-glutamine supplementation (n=9) or placebo (n=8) group. The subjects in two groups were asked to take three times during a week for 4 weeks. Each subject was screened for dietary habits before inclusion into the study. Participants performed 6 set to exhaustion eccentric leg extensions at 75% of 1RM and rest intervals were 3 min among sets. Pain Assessment Scale (PAS), EMG activity and range of motion (ROM) measurements were taken before exercise protocol and 24 and 48 hr afterwards.

RESULTS

There was no statistically significant difference between groups in perceived muscle soreness (SOR), ROM and EMG activity (P < 0.05).

CONCLUSION

The results indicate that L-glutamine supplementation has no significant effect on muscle injury markers in between groups, although glutamine supplementation attenuated delayed onset muscle soreness (DOMS) effects in sup group.

摘要

目的

本研究旨在探讨 L-谷氨酰胺对离心运动（EE）损伤的股四头肌肌电图（EMG）活动的影响。

材料和方法

17 名健康男性（年龄：22.35±2.27 岁；体重：69.91±9.78kg；身高：177.08±4.32cm）被随机、双盲研究分为 L-谷氨酰胺补充组（n=9）或安慰剂组（n=8）。两组受试者均在 4 周内每周服用 3 次。在纳入研究之前，对所有受试者的饮食习惯进行了筛查。参与者进行了 6 组至力竭的 75%1RM 离心腿伸展运动，组间休息 3 分钟。在运动方案之前、之后 24 小时和 48 小时测量疼痛评估量表（PAS）、EMG 活动和运动范围（ROM）。

结果

两组之间的肌肉酸痛（SOR）、ROM 和 EMG 活动无统计学差异（P<0.05）。

结论

尽管谷氨酰胺补充剂在 sup 组中减轻了延迟性肌肉酸痛（DOMS）的影响，但补充 L-谷氨酰胺对组间的肌肉损伤标志物没有显著影响。

https://cdn.ncbi.nlm.nih.gov/pmc/blobs/5b91/3758038/c4109198c66a/ijbms-16-808-g004.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/5b91/3758038/7be890d234df/ijbms-16-808-g001.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/5b91/3758038/da080bd0dccc/ijbms-16-808-g002.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/5b91/3758038/6365800fabb7/ijbms-16-808-g003.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/5b91/3758038/c4109198c66a/ijbms-16-808-g004.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/5b91/3758038/7be890d234df/ijbms-16-808-g001.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/5b91/3758038/da080bd0dccc/ijbms-16-808-g002.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/5b91/3758038/6365800fabb7/ijbms-16-808-g003.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/5b91/3758038/c4109198c66a/ijbms-16-808-g004.jpg

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