Herrera-Espitia, S. C., Olaya-Mira, N., Soto-Cardona, I. C. y Osorio-Vasco, J. (2024) «Biomechanical analysis of the lumbar area using surface electromyography: Flexion–relaxation ratio in maintenance workers», Revista Facultad Nacional de Salud Pública, 42, p. e356473. doi: 10.17533/udea.rfnsp.e356473.