Evaluating the Effect of Biofeedback-Based Training on Trunk Neuromuscular Control and Spinopelvic Motion and Loading During Gait in Older Adults With and Without Chronic Low Back Pain

The goal of this observational study and clinical trial is to evaluate control of trunk posture and walking biomechanics in 20 older adults with chronic low back pain and 20 older adult healthy volunteers. A second objective of this study is to evaluate the effect of weekly biofeedback-based trunk control training to control of trunk posture and walking biomechanics. The main question it aims to answer is: • Does training trunk control improve walking biomechanics in older adults? Researchers will compare older adults with and without chronic low back pain to see if trunk control, walking biomechanics, and the effects of training differ between the groups. Participants will undergo measurements of trunk control in the laboratory, and of walking in both laboratory and outdoor settings. Trunk training will take place once a week for four weeks, and measurements will be repeated after the training protocol.