Randomization and blinding
After signing the informed consent form, the participants were randomly assigned to either the DMIST or the control group (1 : 1). A researcher was in charge of preparing the sealed opaque envelopes, which contained random numbers generated by the EXCEL table, during this operation. Another researcher who was not involved in other aspects of the trial was in charge of randomly distributing the envelopes to participants, and then a shockwave therapist selected whether to execute shockwave therapy based on the random numbers in the envelopes. The assessors and statisticians were not involved in the treatment and were not aware of the randomization.