Electromyography activity of the muscles of the trunk and the effort perception during the plank exercise with different accessories

• Autor(a) principal: Dhein, William
• Data de Publicação: 2022
• Outros Autores: Santiago Wagner Neto, Edgar, Pacheco, Luciana, Moraes, Danieli, Casalini, Elenise, Fagundes Loss, Jefferson
• Tipo de documento: Artigo
• Idioma: por
• Título da fonte: Caderno de Educação Física e Esporte
• Texto Completo: https://e-revista.unioeste.br/index.php/cadernoedfisica/article/view/28159
• topic: Terapia por exercício; Eletromiografia; Prancha.

OBJECTIVE: The aim of this study was comparing the electromyography (EMG) activity of trunk muscles and the perception of effort during plank exercise with different accessories. METHODS: Fifteen physically active women take part in this study, all of them performed five variations of the plank exercise: In the mat, middle box, high box, Isometric in a Swiss boll and moving the upper arms in the Swiss boll. The perception of effort and the EMG activity of rectus abdominis, external oblique, internal/transverse oblique, longissimus, iliocostalis and multifidus muscles were evaluated. We normalize the RMS value of each muscle by maximum voluntary isometric contraction and then the situations were compared with repeated measures ANOVA. RESULTS: The highest EMG activities of the rectus abdominis (81.3±10.6% MVIC), external oblique (92.1±7.6% MVIC), internal oblique (68.7±7.6% MVIC), multifidus (9.8±1.1% MVIC), iliocostal (9.0±1.2% MVIC) and longuissimus (7.6±3.8% MVIC) were during the plank on the swiss ball with upper limb movements. The rectus abdominis, multifidus, iliocostalis and longissimus muscles are secondly more active in the mat and isometry in the swiss ball. The lowest EMG activities to these muscles were on plank with middle and high box. To the external oblique and internal/transverse oblique muscles, no difference was found between the mat, boxes and isometry in the swiss ball. Perception of effort (F=12,008, p=<0.001; eta²=0.546) was lower in the high box situation. CONCLUSION: Variations in the plank exercises change the muscle activity of the trunk muscles by different ways. The highest activities to all muscles were observed during the plank exercise performed above a swiss ball moving the upper arms. To the rectus abdominis, external oblique and internal oblique/tranverse abdominis we found the lowest muscle activities during the plank exercises performed on the middle box and the high box. The effort perception was lower in the high box variation when compared with the other variations.