Análise da co-contração dos músculos do tronco no exercício de estabilização prancha lateral com diferentes superfícies instáveis

Abstract

The concept of stability has become an important focus in the scientific and clinical literature and its training promoted a preventive and therapeutic regimen, developing the muscle control necessary to maintain a functional stability and to decrease the incidence of lesions and discomforts without lombo-pelvic complex, including a lumbar region. The objective of this study was to analyze the co-contraction of the flexor muscles (Abdomen Abdomen, Obliquos Internal Abdomen) and extensors of the trunk (Multífido and Eretor da Espinha) without lateral plank exercise, in four different cases: (1) normal lateral plank; (2) side plate with balance disc; (3) side board with bosu; (4) lateral plank with bosu and balance disk. The sample consisted of 20 male volunteers, aged 23.65 + 4.49 years, body mass 71.31 + 7.85 kg, height 175.35 + 5.48 cm and body mass index (BMI ) 23.14 + 1.74 kg / m 2. In order to obtain electromyographic signals, simple differential surface electrodes were used. For cocontraction analysis, they were designed as developed without Matlab program (Mathworks Natick, USA). The main results are shown in so far as they are known. (P> 0.05) in the global and local cocontration pattern between the lateral plank exercises and unstable surfaces. It is concluded that, therefore, an influence of the unstable surface is dependent on the muscle, the exercise and the type of instability.