Influencing lumbar posture through real-time biofeedback and its effects on the kinematics and kinetics of a repetitive lifting task
| Autor: | Grant Mawston, Steve Taylor, Mark Boocock, Yanto Naude, Jeff Kilby |
|---|---|
| Rok vydání: | 2019 |
| Předmět: |
Adult
Male medicine.medical_specialty Lifting medicine.medical_treatment Physical Exertion Posture Biophysics Biofeedback Back injury Young Adult 03 medical and health sciences 0302 clinical medicine Physical medicine and rehabilitation medicine Humans Orthopedics and Sports Medicine Exertion Range of Motion Articular Ground reaction force Rating of perceived exertion Passive resistance business.industry Rehabilitation Lumbosacral Region Biofeedback Psychology 030229 sport sciences medicine.disease Spine Biomechanical Phenomena body regions Kinetics Lower Extremity Female business Range of motion 030217 neurology & neurosurgery Lumbosacral joint |
| Zdroj: | Gait & Posture. 73:93-100 |
| ISSN: | 0966-6362 |
| DOI: | 10.1016/j.gaitpost.2019.07.127 |
| Popis: | Background Repetitive, flexed lumbar postures are a risk factor associated with low back injuries. Young, novice workers involved in manual handling also appear at increased risk of injury. The evidence for the effectiveness of postural biofeedback as an intervention approach is lacking, particularly for repetitive, fatiguing tasks. Research question How does real-time lumbosacral (LS) postural biofeedback modify the kinematics and kinetics of repetitive lifting and the risk of low back injury? Methods Thirty-four participants were randomly allocated to two groups: biofeedback (BF) and non-biofeedback (NBF). Participants repetitively lifted a 13 kg box at 10 lifts per minute for up to 20 min. Real-time biofeedback of LS posture occurred when flexion exceeded 80% maximum. Three-dimensional motion analysis and ground reaction forces enabled estimates of joint kinematics and kinetics. Rating of perceived exertion (RPE) was measured throughout. Results The BF group adopted significantly less peak lumbosacral flexion (LSF) over the 20 min when compared to the NBF group, which resulted in a significant reduction in LS passive resistance forces. This was accompanied by increased peak hip and knee joint angular velocities in the BF group. Lower limb moments did not significantly differ between groups. Feedback provided to participants diminished beyond 10 min and subjective perceptions of physical exertion were lower in the BF group. Significance Biofeedback of lumbosacral posture enabled participants to make changes in LSF that appear beneficial in reducing the risk of low back injury during repetitive lifting. Accompanying behavioural adaptations did not negatively impact on physical exertion or lower limb joint moments. Biofeedback of LS posture offers a potential preventative and treatment adjunct to educate handlers about their lifting posture. This could be particularly important for young, inexperienced workers employed in repetitive manual handling who appear at increased risk of back injury |
| Databáze: | OpenAIRE |
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