2026-06-01T07:52:03Zhttps://riuma.uma.es/rest/oai/request

oai:riuma.uma.es:10630/378362026-02-03T10:55:08Zcom_10630_2254col_10630_37953

00925njm 22002777a 4500 dc Ruiz-Muñoz, María author González-Sánchez, Manuel author Martín-Martín, Jaime author Cuesta-Vargas, Antonio author 2017 Purpose: To analyse the torque variation level that could be explained by the muscle activation (EMG) amplitude of the three major foot dorsiflexor muscles (tibialis anterior (TA), extensor digitorum longus (EDL), extensor hallucis longus (EHL)) during isometric foot dorsiflexion at different intensities. Methods: In a cross-sectional study, forty-one subjects performed foot dorsiflexion at 100%, 75%, 50% and 25% of maximal voluntary contractions (MVC) with the hip and knee flexed 90° and the ankle in neutral position (90° between leg and foot). Three foot dorsiflexions were performed for each intensity. Outcome variables were: maximum (100% MVC) and relative torque (75%, 50%, 25% MVC), maximum and relative EMG amplitude. A linear regression analysis was calculated for each intensity of the isometric foot dorsiflexion. Results: The degree of torque variation (dependent variable) from the independent variables explain (EMG amplitude of the three major foot dorsiflexor muscles) the increases when the foot dorsiflexion intensity is increased, with values of R2 that range from 0.194 (during 25% MVC) to 0.753 (during 100% MVC). The reliability of the outcome variables was excellent. Conclusion: The EMG amplitude of the three main foot dorsiflexors exhibited more variance in the dependent variable (torque) when foot dorsiflexion intensity increases. Ruiz-Muñoz M, González-Sánchez M, Martín-Martín J, Cuesta-Vargas AI. Muscular activity and torque of the foot dorsiflexor muscles during decremental isometric test: A cross-sectional study. Foot (Edinb). 2017 Jun;31:16-22. doi: 10.1016/j.foot.2016.11.001. Epub 2016 Nov 30. PMID: 28324821. https://hdl.handle.net/10630/37836 10.1016/j.foot.2016.11.001 Torsión Pies - Propiedades mecánicas Muscular activity and torque of the foot dorsiflexor muscles during decremental isometric test: A cross-sectional study.