PACTR202001829834757.

Study name	Physical activity effectiveness for chronic non‐specific low back pain treatment in Burundi.
Methods	RCT.
Participants	Adults aged 18–65 years with chronic (≥ 3 months) or recurrent (≥ 3 episodes in previous 12 months) LBP of mechanical origin.
Interventions	Group‐based yoga plus graded walking vs individual physical therapy.
Outcomes	Activity limitations (Roland‐Morris Disability Questionnaire), pain intensity (numerical rating scale), muscular endurance (Shirado test, Sorensen test), depression (Beck Depression Inventory), patient beliefs (Fear‐Avoidance Beliefs Questionnaire), physical fitness (Borg Rating of Perceived Exertion scale, resting heart rate), self‐perception of performance (Canadian occupational performance measure), participation (5‐Item Pain Disability Index).
Starting date	17 February 2020.
Contact information	Principle investigator: Ildephonse Nduwimana; ilwimana@gmail.com; scientific inquiries: Jean Louis Thonnard; jeanLouis.Thonnard@uclouvain.be; public inquiries: Oyene Kossi; oyene.kossi@gmail.com.
Notes	Official title: 'Physical activity in chronic low back pain: a randomized controlled clinical trial comparing group‐based walking plus yoga versus individual physical therapy.'

HADS: Hospital Anxiety and Depression Scale; MODQ: Modified Oswestry Disability Questionnaire; PCS: Physical Component scale; PTSD: post‐traumatic stress disorder; RCT: randomized controlled trial.