Synonyms
Optical techniques; Force; Acceleration; Sonomicrometry; Strain
Definition
Optical methods in biomechanical analyses include high-speed film and video. In the past decade, various motion analysis systems that track passive or active markers have become the preferred mode to capture human and animal movements.
“Force” cannot be defined by itself. However, the effects of forces can be described. Most importantly, force is described by Newton's second law, which states that, for a particle system, the resultant force acting on a system is proportional to the acceleration of that system. Therefore, forces manifest themselves by accelerating but also by deforming systems.
Acceleration is the second time derivative of displacement, or the first time derivative of velocity. Acceleration is an instantaneous vector quantity.
Sonomicrometryis a technique that uses ultrasound transmission from one piezoelectric crystal to another to measure distances and strains. The principle of...
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References
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Herzog, W. (2009). Measurement Techniques (Biomechanics). In: Binder, M.D., Hirokawa, N., Windhorst, U. (eds) Encyclopedia of Neuroscience. Springer, Berlin, Heidelberg. https://doi.org/10.1007/978-3-540-29678-2_3348
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DOI: https://doi.org/10.1007/978-3-540-29678-2_3348
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