Ana Carolina de Mello Alves Rodrigues1,2, Rodolpho César Dos Reis Tinini3, Valeska Gatica-Rojas4, Andréa Camaz Deslandes5, Ester Liberato Pereira6, Luiz Fernando de Rezende1, Pauline Maillot7, Ricardo Cardoso Cassilhas8, Renato Sobral Monteiro-Junior9,10. 1. Postgraduate Program of Health Sciences (PPGCS), State University of Montes Claros, Montes Claros, MG, Brazil. 2. Department of Physiotherapy, Faculty Santo Agostinho, Montes Claros, MG, Brazil. 3. Institute of Agricultural Sciences, Federal University of Minas Gerais, Montes Claros, MG, Brazil. 4. Human Motor Control Laboratory, Department of Human Movement Sciences, Faculty of Health Sciences, Interdisciplinary Excellence Research Program On Healthy Aging (PIEI-ES), Universidad de Talca, Talca, Chile. 5. Post-Graduation Program of Psychiatry and Mental Health, Psychiatry Institute, Federal University of Rio de Janeiro, Rio de Janeiro, RJ, Brazil. 6. Departament of Physical Education, State University of Montes Claros, Montes Claros, MG, Brazil. 7. Université Paris Descartes, Sorbonne Paris Cité, Laboratoire TEC EA 3625, Paris, France. 8. Department of Physical Education, Federal University of Vales Do Jequitinhonha E Mucuri (UFVJM), Diamantina, MG, Brazil. 9. Postgraduate Program of Health Sciences (PPGCS), State University of Montes Claros, Montes Claros, MG, Brazil. monteirojuniorms@gmail.com. 10. Departament of Physical Education, State University of Montes Claros, Montes Claros, MG, Brazil. monteirojuniorms@gmail.com.
Abstract
BACKGROUND: Single- and dual-tasks are influenced by age-related impaired postural balance. Aim of this study was to analyze the Center of Pressure (CoP) oscillation during static balance in the presence or absence of cognitive task on older women. METHODS: Thirty-one healthy older women were assessed in a stand quiet position with open/closed eyes (single-task, OE and CE) and with cognitive task (dual-task, DT) through Wii Balance Board. Sway area, total displacement and CoP oscillation (CO) based on the number of times that CoP traveled through anteroposterior and mediolateral directions. Friedman test was used to compare OE, CE and DT. Dual-task interference percentage was used to quantify the cognitive load on balance whereas Spearman correlation coefficient was used to assess the association of cognitive domains and CO. RESULTS: The CO was significantly higher in DT than in single-tasks and participants were unable to maintain their limits of stability in mediolateral direction. The cost of DT interference was 30.5%, which is partially explained by the deviation of attention from postural control to spatial and temporal orientation. CONCLUSION: Our findings show that cognitive load during DT impairs balance in mediolateral direction, thus indicating the use of WBB to assess cognitive interference on postural control.
BACKGROUND: Single- and dual-tasks are influenced by age-related impaired postural balance. Aim of this study was to analyze the Center of Pressure (CoP) oscillation during static balance in the presence or absence of cognitive task on older women. METHODS: Thirty-one healthy older women were assessed in a stand quiet position with open/closed eyes (single-task, OE and CE) and with cognitive task (dual-task, DT) through Wii Balance Board. Sway area, total displacement and CoP oscillation (CO) based on the number of times that CoP traveled through anteroposterior and mediolateral directions. Friedman test was used to compare OE, CE and DT. Dual-task interference percentage was used to quantify the cognitive load on balance whereas Spearman correlation coefficient was used to assess the association of cognitive domains and CO. RESULTS: The CO was significantly higher in DT than in single-tasks and participants were unable to maintain their limits of stability in mediolateral direction. The cost of DT interference was 30.5%, which is partially explained by the deviation of attention from postural control to spatial and temporal orientation. CONCLUSION: Our findings show that cognitive load during DT impairs balance in mediolateral direction, thus indicating the use of WBB to assess cognitive interference on postural control.
Entities:
Keywords:
Aging; Balance; Center of pressure; Dual-task; Executive function
Authors: Nathan Theill; Mike Martin; Vera Schumacher; Stephanie A Bridenbaugh; Reto W Kressig Journal: J Am Geriatr Soc Date: 2011-06-07 Impact factor: 5.562