Fig. 4

Density plots showing the variations in the joint angles at the hip of 7 sitting positions, stratified by gender: A) kneeling plantar-flexed; B) squatting; C) left-monk (left hip); D) right-monk (left hip); E) right-monk (right hip); F) sitting on a step stool; and G) standard leg-cross. The abduction and adduction of the hip are positive and negative values, respectively. The dashed lines signify the median value of the hip joint angle. The P values were computed with the Mann–Whitney U test