EMGFT评定无氧阈的可行性研究  

Study on the Feasibility of EMGFT Assessed Anaerobic Threshold

作　　者：黄志强[1] 刘刚[2] 任建生[3] 

机构地区：[1]湖北第二师范学院体育系,湖北武汉430205 [2]湖南科技大学体育学院,湖南湘潭411201 [3]武汉体育学院运动生理生化教研室,湖北武汉430079

出　　处：《体育科学》2012年第8期91-96,F0003,共7页China Sport Science

摘　　要：运用Matsumoto测定EMGFT的方法对青少年足球运动员EMGFT进行测试,目的在于验证肌电阈稳定性;检验EMGFT与LAT、VAT、HRT的相关性;探讨EMGFT无损伤测定无氧阈方法的可行性。方法:递增负荷实验确定LAT、VAT、HRT;肌电阈实验确定EMGFT。结果:EMGFT稳定性实验,两次均值分别为151.08±10.52 W、153.56±12.93 W,r=0.95(P<0.001),组间无显著性差异(P>0.05);以VO2为参数,EMGFT、LAT、VAT、HRT均值分别为2481±463ml/min、2507±501ml/min、2580±474ml/min、2610±517ml/min,EMGFT分别与LAT、VAT、HRT相关性检验r=0.97(P<0.001)、r=0.91(P<0.001)、r=0.76(P<0.05),配对样本t检验P>0.05、P>0.05、P<0.05;以功率为参数,EMGFT、LAT、VAT、HRT均值分别为157±20 W、158±20 W、162±21 W、162±26 W,相关性检验r=0.96(P<0.001)、r=0.93(P<0.001)、r=0.71(P<0.05),配对样本t检验P>0.05、P>0.05、P<0.05。结论:应用Matsumoto肌电无氧阈方法能很好地确定EMGFT,稳定性较好;EMGFT与LAT、VAT呈高度相关,出现时间顺序依次为EMGFT→LAT→VAT,EMGFT略早于LAT和VAT,呈一定的规律性,表明EMGFT可以用于检测无氧阈,具有无损伤、简单、易测等优点;HRT检测无氧阈不稳定,说明HRT不宜作为无氧阈的评定指标。This paper measured the EMGFT of youth soccer players with the methods of deter- mination EMGFT of Matsumoto. Aim to testify the stability of determination of EMGFT with the method non-invasive. To discuss the relationship between EMGFT and LAT, VAT, HRT in in- crements load, then analyze and evaluate the feasibility of the method of measure AT. Meth- ods： Incremental load test to determine LAT, VAT, HRT; EMG threshold determined experi- mentally EMGFT. Results： EMGFT were 151.08± 10.52W, 153.56 ± 12.93W, respectively in the stability of EMGFT trial. There was a highly significant correlation（r= 0.95, P〈0.001）. A paired t-test indicated that there was no statistically significant difference in the two trial（P 〉0.05）. EMGFT, LAT, VAT and HRT during trial were 2481 ± 463 ml/min, 2507±501 rnl/rnin,2580±474 ml/min and 2610±517 ml/min as VO2 for parameter, respectively. There were a highly significant correlation between VO2 at EMGFT and VO2 at LAT（r= 0. 97, P〈0. 001） ,VAT（r=0.91 ,P〈0. 001）, HRT（r= 0. 76, P〈0.05）. EMGFT, LAT, VAT and HRT during trial were 157±20W, 158±20W, 162±21W and 162±26W as watt for parameter, respectively. There was a highly significant correlation between watt at EMGFT and watt at LAT（r= 0. 96, P〈0. 001）, VAT（r= 0. 93, P〈0. 001）, HRT（r= 0. 71, P〈 0. 05）. Conclusion：By the use of the method of EMGFT which by Matsumoto invented, it indi- cates that the method may determinate EMGFT and very efficiency and stabilization. These data suggest that there were a highly significant correlation between VO2 or watt at EMGFT and VO2 or watt at LAT,VAT, HRT, and its order is EMGFT→LAT→VAT. These data indicate the method of determination EMGFT use to the determination of AT. It is a non-invasive simple and easy. The method of HRT was instability, it indicates that HRT not suitable to measure AT.

关 键 词：肌电阈 乳酸阈 通气阈 心率阈 无氧阈 积分肌电 

分 类 号：G804.2[文化科学—运动人体科学]