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Compensatory mechanisms of balance to the scaling of arm-swing frequency

Title
Compensatory mechanisms of balance to the scaling of arm-swing frequency
Author
고지현
Keywords
Postural control; Arm-swing; Center of mass; Center of pressure
Issue Date
2015-11
Publisher
ELSEVIER SCI LTD
Citation
JOURNAL OF BIOMECHANICS, v. 48, No. 14, Page. 3825-3829
Abstract
The present study investigated the contribution of the Hof (2007) mechanism 1 (M1-moving the center of pressure (COP) with respect to the vertical projection of the center of mass (COMTotal:)); and mechanism 2 (M2-rotating the trunk and upper limbs around the COMTotal) to control and the stability of COP-COMTotal cophase as a function of lateral arm-swing frequency. Young adults were instructed to stand still on a force platform while alternating their arm swinging from above the head to the side of their thigh to create perturbations to postural control. Scaling the frequency of arm-swing (random step changes of 0.2 Hz within a bandwidth of 0.2 to 1.6 Hz) increased the SD of COP but decreased the SD of COMTotal. Increments in arm-swing frequency induced a progressive increase in M1 and decrease in M2 in terms of their relative contribution to postural stability. The cophase between COP and COMTotal became more tightly in-phase over increments of arm-swing frequency. These findings show an adaptive compensatory role of M1 and M2 within the stability of COP-COMTotal coupling in the regulation of human balance control. (C) 2015 Elsevier Ltd. All rights reserved.
URI
https://www.sciencedirect.com/science/article/pii/S0021929015004868http://repository.hanyang.ac.kr/handle/20.500.11754/100587
ISSN
0021-9290; 1873-2380
DOI
10.1016/j.jbiomech.2015.09.008
Appears in Collections:
COLLEGE OF SPORTS AND ARTS[E](예체능대학) > ETC
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