Angular positions as a function of seat slope and height.

Mean ± SD of head flexion, T1 flexion, S1 flexion and thigh flexion are presented in different conditions combining seat height (Hlow, Hmed, Hhigh) and slope (S0, S15). Negative values represent an articular position in extension. For the “seat height” independent variable, the overall effect (HOverall) and the contrast analysis between Hlow/Hhigh and Hlow/Hmed are described. * p<0.05, ** p<0.01, NS non-significant. Angular positions as a function of seat slope and height.