Results
The CTSC group showed statistically significantly greater improvement in FHA and cervical flexion than the control group at Week 4 (FHA, mean difference − 6.05; 95% CI − 8.03, − 4.07; cervical flexion, mean difference 6.84; 95% CI 3.14, 10.55) and Week 8 (FHA, mean difference − 4.64; 95% CI ( − 6.71, − 2.58); cervical flexion, mean difference 5.21; 95% CI 0.84, 9.58). There were no significant between-group differences in FVC at week 4 (mean difference 0.09; 95% CI − 0.06, 0.23) and week 8 (mean difference 0.04; 95% CI − 0.11, 0.19).