The role of conscious processing of movements during balance by young and older adults |
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| Affiliation: | 1. Department of Health and Physical Education, The Education University of Hong Kong, Rm D4-2/F-03, Block D4, 10 Lo Ping Road, Tai Po, N.T., Hong Kong, China;2. School of Public Health, The University of Hong Kong, Room 305, 3/F, The Hong Kong Jockey Club Building for Interdisciplinary Research, 5 Sassoon Road, Pokfulam, Hong Kong, China;1. Department of Kinesiology, Brock University, St. Catharines, Ontario, Canada;2. School of Kinesiology, University of British Columbia, Vancouver, British Columbia, Canada;3. Djavad Mowafaghian Centre for Brain Health, University of British Columbia, Vancouver, British Columbia, Canada;4. International Collaboration on Repair Discoveries, University of British Columbia, Vancouver, British Columbia, Canada;1. Physical Therapy Sciences, Program in Clinical Health Sciences, University Medical Center Utrecht, Utrecht, The Netherlands;2. Research & Development, Heliomare Rehabilitation Centre, Wijk aan Zee, The Netherlands;3. Department of Health Innovation and Technology, Fontys University of Applied Sciences, Eindhoven, The Netherlands;4. Department of Human Movement Sciences, Faculty of Behavioural and Movement Sciences, Vrije Universiteit, Amsterdam, The Netherlands |
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| Abstract: | We examined the effect of verbalization of a phylogenetic motor skill, balance, in older and young adults with a low or a high propensity for conscious verbal engagement in their movements (reinvestment). Seventy-seven older adults and 53 young adults were categorized as high or low reinvestors, using the Movement Specific Reinvestment Scale, which assesses propensity for conscious processing of movements. Participants performed a pre- and post-test balance task that required quiet standing on a force-measuring plate. Prior to the post-test, participants described their pre-test balancing performance (verbalization) or listed animals (non-verbalization). Only young adults were affected by verbalization, with participants with a high propensity for reinvestment displaying increased medial-lateral entropy and participants with a low propensity for reinvestment displaying increased area of sway and medial-lateral sway variability following the intervention. The possible explanations for these results are discussed. |
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