Citation

Uiga L, Capio CM, Ryu D, Wilson MR, Masters RSW. Hum. Mov. Sci. 2018; 57: 442-450.

Affiliation

School of Public Health, Li Ka Shing Faculty of Medicine, The University of Hong Kong, Hong Kong; Te Huataki Waiora Faculty of Health, Sport and Human Performance, University of Waikato, New Zealand.

Copyright

(Copyright © 2018, Elsevier Publishing)

DOI

10.1016/j.humov.2017.10.008

PMID

29074307

Abstract

This study aimed to examine the relationship between conscious control of movements, as defined by the Theory of Reinvestment (Masters & Maxwell, 2008; Masters, Polman, & Hammond, 1993), and both traditional and complexity-based COP measures. Fifty-three young adults (mean age=20.93±2.53years), 39 older adults with a history of falling (mean age=69.23±3.84years) and 39 older adults without a history of falling (mean age=69.00±3.72years) were asked to perform quiet standing balance in single- and dual-task conditions. The results showed that higher scores on the Movement Specific Reinvestment Scale (MSRS; Masters, Eves, & Maxwell, 2005; Masters & Maxwell, 2008), a psychometric measure of the propensity for conscious involvement in movement, were associated with larger sway amplitude and a more constrained (less complex) mode of balancing in the medial-lateral direction for young adults only. Scores on MSRS explained approximately 10% of total variation in the medial-lateral sway measures. This association was not apparent under dual-task conditions, during which a secondary task was used to limit the amount of cognitive resources available for conscious processing. No relationship between postural control and score on the MSRS was found for either older adult fallers or non-fallers. Possible explanations for these results are discussed.

Copyright © 2017 Elsevier B.V. All rights reserved.

Language: en

Keywords

Movement specific reinvestment; Older adults; Postural control