Abstract
Background: Tracking tasks are valuable in assessing motor control in neuro-musculoskeletal conditions, including chronic low back pain (LBP), during simple and complex activities. However, their reliability is uncertain. Purpose: This study explored the test-retest reliability of a tracking system for trunk motor control. Methods: A test-retest design with a single assessor was used. Thirty-two healthy participants (mean age; 23.1 years) and eight patients with chronic LBP (mean age, pain duration and intensity; 21.9 years, 52 months, 4.3/10, respectively) were tested in two sessions, at least one day apart. A novel motion tracking system was developed to quantify trunk motor control during complex trunk motions. The tracking system provided
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