2.3. Study Protocol
pain
RECRUITMENT
Before the data collection, each subject was fitted with new shoes according to their group assignment. The subjects were asked to use their assigned shoes as their main footwear for the duration of the trial. Measures from both of the groups were collected at the baseline (recruitment), one month and 3 months after recruitment. All of the measures of knee ROM, pain on the VAS, WOMAC and TUG were collected. In the gait laboratory, after the four markers were placed on the subjects, they were asked to walk at a comfortable speed 3–4 times along the 10 m long paved path. The subjects were asked to rate at the end of the study whether they wore the shoes all of the time, most of the time, a few hours a day or whether they hardly wore the shoes.