NCT03756519.

Study name	The effect of exercise on recent onset low back pain in the emergency department
Methods	Study design: RCT Statistical analysis: not reported
Participants	Number: 69 Inclusion criteria Age 18–65 years English speaking Recent onset LBP (< 1 week) Exclusion criteria Subacute/chronic LBP (> 1week) Previous episode of LBP in past 3 months Fracture Previous back surgery Urinary retention Saddle anaesthesia Bilateral or multilevel neurological impairment Traumatic mechanism of injury (fall > 3 metres or 3 steps, motor vehicle crash >100 km/h)
Interventions	EG: exercise, advice to stay active and engaged in usual activities, advice on the use of ice or heat, advice regarding use of medications CG: usual care
Outcomes	Functional status: RMDQ Pain: NRS Pain intensity on average over past 24 hours Pain intensity at its worst over past 24 hours Pain intensity at its least over past 24 hours Recovery: perceived change in function scale (−5 to +5) Patient satisfaction: satisfaction with healthcare received Self‐reported adverse effects of treatment Work status: working or not working, full or part‐time, full or modified duties or hours, number of hours worked in past 7 days Healthcare utilisation: self‐reported questionnaire Cost: healthcare and societal costs Health‐related quality of life: EQ‐5D‐5L
Starting date	1 May 2018
Contact information	Jordan Miller, PhD, Kingston Health Sciences Center, Kingston General Hospital and Hotel Dieu Hospital Sites, Kingston, Ontario, Canada, K7L 3N6, jordan.miller@queensu.ca
Notes	Registered at www.clinicaltrials.gov/ct2/show/study/NCT03756519 Funding: not reported We contacted the corresponding author, who told us that the trial was not funded or completed and therefore the results are not published.