Participants will not be allowed to take part in other forms of exercise (e.g. Tai Chi, aerobic exercises or yoga) during the trial. Other pharmacological agents that can affect pain assessment (e.g. non-steroidal anti-inflammatory drugs or opioid analgesics) must not be taken during the trial. If patients need other treatment or concomitant care, they should contact the physician in advance, and all medications must be recorded with detailed information in the case report.
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