Learning effect of isokinetic measurements in healthy subjects, and reliability and comparability of Biodex and Lido dynamometers - Lund, H; Sondergaard, K; Zachariassen, T; Christensen, R; Bulow, P; Henriksen, M; Bartels, E M; Danneskiold-Samsoe, B; Bliddal, H (Clin Physiol Funct Imaging, 2005)