IRCT20110427006318N11 IRCT 2019-03-03 Semnan University of Medical Sciences The effect of chamomile oil on the severity of low back pain in pre-hospital emergency staff The effect of chamomile oil on the severity of nonspecific low back pain in pre-hospital emergency staff 2019-04-09 anticipated 90 Complete https://irct.ir/trial/37866 interventional Randomization: Randomized, Blinding: Double blinded, Placebo: Used, Assignment: Parallel, Purpose: Supportive, Randomization description: In order to establish the number of samples assigned to each group (intervention, placebo and control), a random method with 6 blocks is used, so that each block has an equal number of each group, and the research sample assigned to the groups of the study by blocks randomization, Blinding description: Intervention groups and placebo are unaware of the nature of the oil. The statistics specialist is not aware of the assignment of individuals to groups. N/A low back pain. Intervention 1: Intervention group: The intervention group in the waist area of 100 cm² uses 1.5 cc of chamomile oil with a plastic applicator three times a day (morning, noon, and night) for three weeks. Intervention 2: Intervention group: The placebo group in the waist area of 100 cm² uses 1.5 cc of paraffin oil with a plastic applicator three times a day (morning, noon, and night) for three weeks. Intervention 3: Control group: The control group does not receive intervention. No - There is not a plan to make this available Justification or reason for not sharing IPD is Data is confidential