A biomechanical study of spherical grip

Martin-Martin, Jaime & Cuesta-Vargas, Antonio (2013) A biomechanical study of spherical grip. SpringerPlus, 2, pp. 1-8.

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Use of the hand is vital in working life due to the grabbing and pinching it performs. Spherical grip is the most commonly used, due to similarity to the gripping of a computer mouse. Knowledge of its execution and the involved elements is essential. Analysis of this exertion with surface electromyography devices (to register muscular activity) and accelerometer devices (to register movement values ) can provide multiple variables. Six subjects performed ball gripping and registered real-time electromyography (thenar region, hypothenar region, first dorsal interosseous, flexors of the wrist, flexor carpi ulnaris and extensors of the wrist muscles) and accelerometer (thumb, index, middle, ring, pinky and palm) values. The obtained data was resampled “R software” and processed “Matlab Script” based on an automatic numerical sequence recognition program. Electromyography values were normalized on the basis of maximum voluntary contraction, whilst modular values were calculated for the acceleration vector. After processing and analysing the obtained data and signal, it was possible to identify five stages of movement in accordance with the module vector from the palm. The statistical analysis of the variables was descriptive: average and standard deviations. The outcome variables focus on the variations of the modules of the vector (between the maximum and minimum values of each module and phase) and the maximum values of the standardized electromyography of each muscle. Analysis of movement through accelerometer and electromyography variables can give us an insight into the operation of spherical grip. The protocol and treatment data can be used as a system to complement existing assessments in the hand.

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2 citations in Scopus
1 citations in Web of Science®
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ID Code: 77125
Item Type: Journal Article
Refereed: Yes
DOI: 10.1186/2193-1801-2-591
ISSN: 2193-1801
Divisions: Current > QUT Faculties and Divisions > Faculty of Health
Copyright Owner: © 2013 Martin-Martin and Cuesta-Vargas; licensee Springer
Copyright Statement: This is an open access article distributed under the terms of the Creative Commons Attribution License (http://creativecommons.org/licenses/by/2.0), which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.
Deposited On: 07 Oct 2014 07:03
Last Modified: 22 Jun 2017 20:01

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