RBR‐6c65dw.

Trial name or title	Evaluation of the effects of chiropractic and transcutaneous electrical nerve stimulation (tension) on pain in patients with of mechanical origin neck pain
Methods	Design: randomised controlled trial, parallel design Setting: outpatients Country: Faculdade Santo Agostinho, Teresina, Brazil
Participants	Inclusion criteria: "To be between 20 and 39 years of age; to be of both sexes; to have cervicalgia of mechanical origin." Exclusion criteria: "Present a positive result for the klein test; acute fracture; spinal cord tumour; acute infections; malignant spinal neoplasm; frank disc herniation with signs of progressive neurological deficit; neoplasms of muscle tissue or other soft tissues; generalized congenital hypermobility; syringomyelia; hydrocephalus of unknown etiology."
Interventions	40 people were equally divided into four groups: Group 1: TENS ("frequency used was 4 HZ and pulse width of 250 microseconds and comfortable intensity, applied during one hour, with square and small electrodes") Group 2: chiropractic ("the chiropractic maneuvers used to adjust the high cervical (C0‐C1) ‐ (C1‐C2)") Group 3: sham ("TENS device was switched off for one hour session") Group 4: TENS + chiropractic ("the same parameters of transcutaneous electrical nerve stimulation and chiropractic manipulation maneuvers were used for one hour and 15 minutes")
Outcomes	Primary outcomes Pain (VAS) Cervical function (measured by Neck Disability Index)
Starting date	15 October 15 2017
Contact information	Gabriel Martins de Barros ‐ gabrielmarrosthe@hotmail.com (Faculdade Santo Agostinho, Teresina, Brazil)
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