Influence of Verbal Suggestion on the Therapeutic Effect of the Joint Manipulation

Inclusion Criteria: * participants with low back pain lasting more than 3 months, * participants who have not been taking any non-steroidal anti-inflammatory drugs (NSAIDs) for at least one week prior to the start of the study, * participants who are not taking any steroid drugs, * participants who have never had the joint manipulation before, * participants within the age range of 19-30 years, * written consent to participate in the study. Exclusion Criteria: * participants who are students of physiotherapy, * participants with a BMI \>33, * participants after a lumbar spine surgery, * participants who, in the 6 months prior to the start of the study, suffered from a lumbar spine injury, * participants with diabetes, * participants with rheumatic diseases, * participants with endometriosis, * participants with endocrine diseases, * participants with acute inflammation in the lumbar spine region and sciatica symptoms.