DR. HUSSAIN I.; SHARMA K.; AHSAN M.; ANSARI. Electromyographical Comparison of Concentric and Eccentric Phase during Selected Abdominal Exercises. The Shield - Research Journal of Physical Education & Sports Science, [S. l.], v. 1, 2006. DOI: 10.57038/theshield.v1i0.2764. Disponível em: https://sujo.usindh.edu.pk/index.php/THE-SHIELD/article/view/2764. Acesso em: 25 aug. 2026.