Effect of intra-dialytic, low-intensity strength training on functional capacity in adult haemodialysis patients: a randomized pilot Trial - Chen, J L; Godfrey, S; Ng, T T; Moorthi, R; Liangos, O; Ruthazer, R; Jaber, B L; Levey, A S; Castaneda-Sceppa, C (Nephrol Dial Transplant, 2010)