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Differences in Muscle Activity Patterns and Graphical Product Quality in Children Copying and Tracing Activities on Horizontal or Vertical Surfaces
Portnoy
S
author
Rosenberg
L
author
Alazraki
T
author
Elyakim
E
author
Friedman
J
author
2015
The observation that a given task, e.g. producing a signature, looks similar when created by different motor commands and different muscles groups is known as motor equivalence. Relatively little data exists regarding the characteristics of motor equivalence in children. In this study, we compared the level of performance when performing a tracing task and copying figures in two common postures: while sitting at a desk and while standing in front of a wall, among preschool children. In addition, we compared muscle activity patterns in both postures. Specifically, we compared the movements of 35 five- to six-year old children, recording the same movements of copying figures and path tracing on an electronic tablet in both a horizontal orientation, while sitting, and a vertical orientation, while standing. Different muscle activation patterns were observed between the postures, however no significant difference in the performance level was found, providing evidence of motor equivalence at this young age. The study presents a straightforward method of assessing motor equivalence that can be extended to other stages of development as well as motor disorders.
Motor equivalence
Electromyography
Tablet
Occupational Therapy
Muscle fatigue
Motor control
exported from refbase (https://refbase.nfshost.com/show.php?record=77), last updated on Tue, 26 Jul 2016 06:56:51 +0000
text
http://linkinghub.elsevier.com/retrieve/pii/S1050641115000309
https://refbase.nfshost.com/files/portnoy/2015/77_Portnoy_etal2015.pdf
http://linkinghub.elsevier.com/retrieve/pii/S1050641115000309
10.1016/j.jelekin.2015.01.011
Portnoy_etal2015
Journal of Electromyography and Kinesiology
Journal of Electromyography and Kinesiology
2015
continuing
periodical
academic journal
25
3
540�547
1050-6411
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