文章基本信息

标题：Bilateral Deficit in Maximal Isometric Knee Extension in Trained Men
本地全文：下载
作者：André Luiz S. Teixeira ; André Luiz S. Teixeira ; Júlio Cézar A. Narciso 等
期刊名称：Journal of exercise physiology online
印刷版ISSN：1097-9751
出版年度：2013
卷号：16
期号：1
页码：28-35
语种：English
出版社：American Society of Exercise Physiologists
摘要：Teixeira ALS, Narciso JCA, Salomão IT, Dias MRC. Bilateral Deficit in Maximal Isometric Knee Extension in Trained Men. JEPonline 2013;16(1):28-35. Bilateral deficit occurs when the sum of unilateral strengths is greater than the bilateral strength. The purpose of this study was to test the hypothesis that bilateral deficit occurs in maximal isometric knee extension in trained men. For this, 27 healthy men with previous experience in resistance training (RT) were enrolled (25.1 ± 8.6 yrs, 74.9 ± 10.9 kg, 178.1 ± 5.2 cm; 23.5 ± 2.8 kg·m-2 ). The evaluations were made randomly in 1 day. For analysis of maximal isometric strength, a mechanical dynamometer with 1 Newton (N) of resolution was fixed to the RT machine (extension chair) and was connected to a computer that transfers data to specific software. The 120º of knee extension was determined by goniometry. For the unilateral contraction, subjects made 5 sec of maximal voluntary contraction with the dominant leg and immediately after with the nondominant leg. For the bilateral contraction, subjects made 5 sec of maximal voluntary contraction with both legs. Five minutes of rest interval between the tests was respected (unilateral x bilateral). Student’s paired t test showed that the sum of values obtained unilaterally (718.4 ± 106.3 N) was greater than the bilateral values (663.2 ± 97.7 N) (P=0.0012). These results confirm our initial hypothesis that bilateral deficit occurs in maximal isometric knee extension in trained men.
关键词：Resistance Training;Muscle Strength;Bilateral Deficit