Skip to Main content Skip to Navigation
Journal articles

“Postural first” principle when balance is challenged in elderly people

Abstract : Human cognitive processing limits can lead to difficulties in performing two tasks simultaneously. This study aimed to evaluate the effect of cognitive load on both simple and complex postural tasks. Postural control was evaluated in 128 noninstitutionalized elderly people (mean age = 73.6 ± 5.6 years) using a force platform on a firm support in control condition (CC) and mental counting condition (MCC) with eyes open (EO) and eyes closed (EC). Then, the same tests were performed on a foam support. Sway path traveled and area covered by the center of foot pressure were recorded, low values indicating efficient balance. On firm support, sway path was higher in MCC than in CC both in EO and EC conditions (p < 0.001). On foam support, sway path was higher in CC than in MCC in EC condition (p < 0.001), area being higher in CC than in MCC both in EO (p < 0.05) and EC (p < 0.001) conditions. The results indicate that cognitive load alters balance control in a simple postural task (i.e. on firm support), which is highlighted by an increase of energetic expenditure (i.e. increase of the sway path covered) to balance. Awareness may not be increased and the attentional demand may be shared between balance and mental task. Conversely, cognitive load does not perturb the realization of a new complex postural task. This result showed that postural control is prioritized ("postural first" principle) when seriously challenged.
Document type :
Journal articles
Complete list of metadatas

https://hal.univ-lorraine.fr/hal-01709985
Contributor : Devah Ul <>
Submitted on : Thursday, February 15, 2018 - 2:51:53 PM
Last modification on : Tuesday, October 13, 2020 - 10:47:14 AM

Identifiers

Citation

Alexis Lion, Rosario Spada, Gilles Bosser, Gérôme Gauchard, Guido Anello, et al.. “Postural first” principle when balance is challenged in elderly people. International Journal of Neuroscience, Taylor & Francis, 2013, 124 (8), pp.558 - 566. ⟨10.3109/00207454.2013.864288⟩. ⟨hal-01709985⟩

Share

Metrics

Record views

104