Fig. 8

Participants perceived lower extremity musculoskeletal effort, PME (%), in (a) lifting task and (b) lifting/carrying task when assisted by exoskeleton. Subjective assessment is made in relation to effort experienced without exoskeleton assistance. Participant rating is based on the scale 0-100%. Mean musculoskeletal effort of all participants (Pavg) is shown on the right-hand side. Error bars indicate standard deviation of the mean.