Sarroca, N. Luesma Bartolomé, M.J. Valero, J. Deus, J. Casanova, J. Lahoz, M. Muscle activation during gait in unilateral transtibial amputee patients with prosthesis: The influence of the insole material density J. clin.med. 10.3390/jcm10143119 2021 2021