Crouched posture maximizes ground reaction forces generated by muscles

Highlights ► We used musculoskeletal modeling and optimization to investigate one possible advantage to crouch gait. ► We placed an OpenSim gait model in 45 different postures from upright to crouch during the stance phase. ► We maximized horizontal ground reaction forces in eight compass directions...

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Bibliographic Details
Published in:Gait & posture 2012-07, Vol.36 (3), p.405-408
Main Authors: Hoang, Hoa X, Reinbolt, Jeffrey A
Format: Article
Language:English
Subjects:
Biomechanical Phenomena
Cerebral palsy
Cerebral Palsy - physiopathology
Crouch
Gait
Gait - physiology
Gait Disorders, Neurologic - physiopathology
Humans
Imaging, Three-Dimensional
Indexing in process
Models, Biological
Muscle Contraction - physiology
Muscle, Skeletal - physiology
Optimization
Orthopedics
Postural Balance - physiology
Posture
Posture - physiology
Range of Motion, Articular - physiology
Stress, Mechanical
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Summary:Highlights ► We used musculoskeletal modeling and optimization to investigate one possible advantage to crouch gait. ► We placed an OpenSim gait model in 45 different postures from upright to crouch during the stance phase. ► We maximized horizontal ground reaction forces in eight compass directions (e.g., force profile) by adjusting muscle forces. ► The largest force profile areas were found for postures from mild crouch (in initial stance) to crouch (in final stance). ► The ability to generate large force profiles represents a mechanical advantage of adopting a crouched posture.
ISSN:0966-6362
1879-2219
DOI:10.1016/j.gaitpost.2012.03.020