Trunk and lower limb coordination during lifting in people with and without chronic low back pain |
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| Institution: | 1. Department of Physical Therapy, Central Michigan University, United States;2. The BioCAT, Inc., Santa Clarita, CA, United States;1. Student, Institute of Medical Engineering & Medical Physics, Cardiff School of Engineering, Cardiff University, Cardiff, UK;2. Physiotherapy Specialist, Ministry of Health, Riyadh, Kingdom of Saudi Arabia;3. Senior Lecturer, Cardiff University, Institute of Medical Engineering & Medical Physics, Cardiff School of Engineering, Cardiff University, Cardiff, UK;4. Lecturer, Cardiff University, Institute of Medical Engineering & Medical Physics, Cardiff School of Engineering, Cardiff University, Cardiff, UK;5. Senior Lecturer, Faculty of Health and Social Sciences, Bournemouth University, Dorset, UK;1. Department of Mechanical Engineering, Sharif University of Technology, Tehran, Iran;2. Biomechanics Lab, Rehabilitation Research Center, Faculty of Rehabilitation, Department of Rehabilitation Basic Sciences, Iran University of Medical Sciences, Tehran, Iran;3. Department of Ergonomics, University of Social Welfare and Rehabilitation Sciences, Tehran, Iran;4. Department of Biomedical Engineering, Khalifa University of Science Technology and Research, Abu Dhabi, United Arab Emirates;1. School of Physical and Occupational Therapy, McGill University, 3654 Promenade Sir-William-Osler, Montreal, Quebec H3G 1Y5, Canada;2. Centre for Interdisciplinary Research in Rehabilitation of Greater Montreal, Constance Lethbridge Rehabilitation Centre, 7005 Blvd De Maisonneuve O, Montreal, Quebec H4B 1T3, Canada;1. Centre for Health, Exercise and Sport Science, Southampton Solent University, UK;2. Department of Exercise & Sport Science, Manchester Metropolitan University, UK;3. AECC Clinic, Anglo European College of Chiropractic, UK |
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| Abstract: | Differences in synchronous movement between the trunk and lower limb during lifting have been reported in chronic low back pain (CLBP) patients compared to healthy people. However, the relationship between movement coordination and disability in CLBP patients has not been investigated. A cross-sectional study was conducted to compare regional lumbar and lower limb coordination between CLBP (n = 43) and control (n = 29) groups. The CLBP group was divided into high- and low-disability groups based on their Oswestry Disability Index (ODI) score. The mean absolute relative phase (MARP) angles and mean deviation phase (DP) between the (1) lumbar spine and hip, and (2) hip and knee were measured. The relationship between MARP angle and DP and ODI were investigated using linear regression. The higher-disability CLBP group demonstrated significantly greater lumbar-hip MARP angles than the lower-disability CLBP group (mean difference = 12.97, % difference = 36, p = 0.041, 95% CI 2.97, 22.98]). The higher-disability CLBP group demonstrated significantly smaller hip-knee DP than controls (mean difference = 0.11, % difference = 76, p = 0.011, 95% CI 0.03, 0.19]). There were no significant differences in lumbar-hip and hip-knee MARP and DP between the lower-disability CLBP and control groups. Lumbar-hip MARP was positively associated with ODI (R2 = 0.092, β = 0.30, p = 0.048). High-disability CLBP patients demonstrated decreased lumbar-hip movement coordination and stiffer hip-knee movement during lifting than low-disability CLBP patients and healthy controls. |
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| Keywords: | Chronic low back pain Kinematics Lifting Motor control Coordination |
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