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Density plots showing the variations in the joint angles at the hip of 4 sitting positions, stratified by gender: A) benjangkapradit prostration; B) squatting; C) left-monk (left hip); and D) right-monk (right hip). The flexion and extension of the hip are the 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
