The Role of Working Memory on Dual-Task Cost During Walking Performance in Childhood

Emanuela Rabaglietti, Aurelia De Lorenzo, Paolo Riccardo Brustio, Emanuela Rabaglietti, Aurelia De Lorenzo, Paolo Riccardo Brustio

Abstract

This study examined the effect of a secondary motor task on walking ability, whether performance differed according to age and the possible relationship between cognitive abilities, specifically working memory, and dual-task costs in children with typical development. Fifty-three female children (mean age M = 10 ± 2 years), were divided into two different age groups: a young (7-9 years; n = 17) and an older group (10-13 years; n = 36). First, participants performed a Walking Test (WT) without additional tasks; afterward, they performed the same walking test while performing each of the following tasks: carrying (1) a glass of water, (2) a ball on a round tray and (3) the combination of both tasks (1) and (2). The Test of Memory and Learning were used to assess working memory. WTs under a dual-task condition generally produced worse results compared to a single-task condition [F(3,135) = 32.480, p < 0.001]. No age-related difference was observed [F(1,45) = 0.497, p = 0.485]. Age, digit forward and backward, facial memory, and paired recall accounted altogether for 28.6% of variance in dual-task ability during WT while carrying a glass of water and a ball on a round tray. Specifically, facial memory significantly accounted for the variance of DTC in WTWT (β = -0.381, p = 0.016). Moreover, a trend toward a statistical significance was observed for digit forward (β = -0.275, p = 0.085). Results underlined that regardless of the age, a dual-task performance might affect walking performance depending on the required secondary task. Moreover, our results showed the association between working memory skills and dual-task cost in walking ability.

Keywords: cognitive abilities; dual-task activity; motor development; school age; walking.

Figures

Figure 1
Figure 1
Mean and standard deviation of Walking Test (WT), Walking Test while carrying a glass of water (WTW), Walking Test while carrying a ball on a round tray; Walking Test while carrying a glass of water and a ball on a round tray (WTWT) considering the whole sample (A) and the young (7–9 years) and older children group (10–13 years) (B). ***p < 0.001.

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