A multiple-treatment trial on 2 groups was carried out. The multiple-treatment trial First, a high adherence rate was expected in our subjects. The subjects usually did not adhere to the treatment program when the effects of treatment were not obvious, leading to loss of follow-up during MRM treatment in our study. Second, the overall number of subjects needed to reach a level of statistical power was lower in our design than in 3 different forms of mobilization with 2 groups. Third, each subject served as his or her own control in each group in our design. Variability in individual differences among subjects was removed from the error term in each group in our design.