Figure 5
From: Biomechanical evaluation of a novel wheelchair backrest for elderly people
Results of subjective discomfort evaluations. Comparison of mean subjective discomfort levels of upper-back, mid-back, lower-back, buttocks, and thighs across 4 sitting postures, which include relaxed slouching sitting (RSS), flat back support sitting (FBS), prominent lumbar support sitting (PLS), and backward thoracic support sitting (BTS). The question items for each body part were evaluated using a scale of 6 levels (0–5) in which 0 represents no discomfort and 5 represents extreme conceivable discomfort. Error bars indicate SD and * indicates p < 0.05.