Self-paced walking for chronic low back pain

INTERVENTION: Affect‐regulated walking intervention: 8‐week home‐based walking intervention using affect‐regulation to an intensity to feel 'fairly good' (using the Feeling Scale). The intervention dosage is aiming to achieve Australian physical activity guidelines of 30‐60 minutes of walking on 5 or more days each week. Accelerometers will collect objectively measured physical activity levels during week 3, 6 and 8 of the intervention to monitor adherence, and the participants will complete a pen and paper walking diary as an additional adherence measure. CONDITION: Chronic low back pain PRIMARY OUTCOME: Disability as assessed via the Oswestry Disability Questionnaire (mean score) SECONDARY OUTCOME: Exercise self‐efficacy as measured by the Barriers Self‐Efficacy Scale Health‐related quality of life by the RAND‐36 questionnaire Pain using a 0‐10 numerical rating scale Participant satisfaction using questionnaire developed for the study Physical activity as measured using 7 day accelerometry (GENEActive) (mean total counts/day) adherence using a self‐report daily walking diary (mean minutes walked/day) exercise capacity as measured using the 6 minute walk test (mean distance walked in m) INCLUSION CRITERIA: age 18‐64 years to align with the Australian Physical Activity Guidelines bracket,with chronic low back pain (current symptoms persisting longer than 3 months) not achieving Australian physical activity guidelines (30‐60 minutes of moderate intensity physical activity on 5 or more days each week)