Longitudinal Rehabilitation Trial Dataset of Disability, Pain, and Abdominal Task Performance in Men With Chronic Low Back Pain

This secondary analysis uses an existing participant-level longitudinal dataset derived from an eight-week, two-group randomized rehabilitation trial. The dataset comprises 90 men aged 30–39 years with chronic low back pain lasting more than three months. Participants were allocated to two rehabilitation groups (45 per group) receiving stabilization exercises and Kinesio taping, with electromyographic biofeedback additionally provided to one group.

The dataset contains repeated measurements collected at five assessment points: baseline (week 0) and weeks 2, 4, 6, and 8. The principal variables include age, intervention-group allocation, self-reported functional disability measured using the Modified Oswestry Disability Questionnaire (raw score 0–50), pain intensity measured using a 10-cm visual analogue scale (0–10), and abdominal task performance assessed as the mean duration (seconds) of three pressure-guided abdominal drawing-in trials.

All 90 participants have complete measurements across the five assessment occasions. The present secondary analysis uses the entire available cohort rather than a selected subgroup. Eight-week disability is the primary outcome, while baseline and weeks 2, 4, and 6 measurements serve as explanatory variables in regression models examining longitudinal associations and incremental information from clinical reassessment. Eight-week pain is evaluated as a secondary sensitivity outcome.

The analysis investigates whether repeated clinical measurements and abdominal task performance provide additional information about eight-week disability beyond baseline characteristics. No new participants were recruited, and no additional data were collected for this secondary analysis.