Individuals with chronic low back pain will undergo a yoga, yoga nidra, and control condition on separate visits. Each visit, before and after the intervention, participants with rate their pain in response to heat stimuli, a sit to stand task, and questionnaires.
low back pain classified as symptoms localized to the posterior region of the trunk, extending from the lower margin of the last rib to the gluteal folds
low back pain for three months or longer with a average pain intensity = 3/10 on the 11-point numeric pain rating scale (NPRS) within the previous twenty-four hours
experienced three or more low back pain episodes within the past 3 years
fluency in English
systemic or neurological conditions that could alter sensation (e.g., uncontrolled diabetes)
any surgery or fracture within 6 months
blood-clotting disorders or contraindications to pressure and heat stimuli
current pregnancy and requirement for medical clearance to exercise (screened with Physical Activity Readiness Questionnaire-Plus PAR-Q+
Single group
Yoga
Other interventionParticipants will complete a series of yoga poses.
Yoga Nidra
Other interventionParticipants will complete yoga nidra, a guided meditation.
Control Condition
Other interventionParticipants will listen to a story.
Heat Pain Threshold
Participants will undergo heat pain threshold. A thermode will be applied to the low back with temperature increasing at 1 degree Celsius per second. Participants will report when the sensation changes from heat to pain and the temperature recorded.
Temporal Summation
Participants will apply thermode to the bottom of the foot and rate their pain in response to 10 heat pulses peaking at 49 degrees Celsius.
Pain Catastrophizing Scale
Participants will complete the pain catastrophizing scale.
Five Times Sit to Stand
Participants with stand up and sit down from a chair five times. The time to complete this task will be recorded.
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