conclusion
Eight sites participated in either the TC group (four sites, 28 participants) or control group (four sites, 27 participants). The WOMAC pain (P=0.006) and stiffness scores (P=0.010) differed significantly between the two groups at post-test, whereas differences between the two groups in the WOMAC physical function score (P=0.071) and the MMSE (P=0.096) showed borderline significance at the post-test. WOMAC pain (P=0.001), physical function (P=0.021), and stiffness (P≤0.001) scores improved significantly more over time in the TC group than in controls. No adverse events were found in either group.