Dual-task effect on gait in adolescents: Visual versus auditory concurrent task

The characteristics of acquiring new sequence information under dual-task situations have been extensively studied. A concurrent task has often been found to affect performance. In real life, however, we mostly perform a secondary task when the primary task is already well acquired. The effect of a secondary task on the ability to retrieve well-established sequence representations remains elusive. The present study investigates whether accessing well-acquired probabilistic sequence knowledge is affected by a concurrent task. Participants acquired non-adjacent regularities in an implicit probabilistic sequence learning task. After a 24-hour offline period, participants were tested on the same probabilistic sequence learning task under dual-task or single-task conditions. Here, we show that although the secondary task significantly prolonged the overall reaction times in the primary (sequence learning) task, access to the previously learned probabilistic representations remained intact. Our results highlight the importance of studying the dual-task effect not only in the learning phase but also during memory access to reveal the robustness of the acquired skill.

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Retrieval of a well-established skill is resistant to distraction: evidence from an implicit probabilistic sequence learning task

10.1101/849729 ◽

2019 ◽

Cited By ~ 1

Author(s):

Teodóra Vékony ◽

Lilla Török ◽

Felipe Pedraza ◽

Kate Schipper ◽

Claire Plèche ◽

...

Keyword(s):

Dual Task ◽

Sequence Learning ◽

Secondary Task ◽

Real Life ◽

Reaction Times ◽

Learning Task ◽

Concurrent Task ◽

Sequence Information ◽

Task Effect ◽

Task Conditions

AbstractThe characteristics of acquiring new sequence information under dual-task situations have been extensively studied so far. Such a concurrent task has often been found to affect performance. In real life, however, we mostly perform a secondary task when the primary one is already well-acquired. The effect of a secondary task on the ability to retrieve well-established sequence representations remains elusive. The present study investigates whether accessing a well-acquired probabilistic sequence knowledge is affected by a concurrent task. Participants acquired non-adjacent regularities in a perceptual-motor implicit probabilistic sequence learning task. After a 24-hour offline period, participants were tested on the same sequence learning task under dual-task or single-task conditions. Here we show that although the secondary task significantly prolonged the overall reaction times in the primary task, the access to the previously learned probabilistic representations remained intact. Our results highlight the importance of studying the dual-task effect not only in the learning phase but also during memory access.

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Dual-task effect on postural control in high-level competitive dancers

Journal of Sports Sciences ◽

10.1080/02640414.2010.544046 ◽

2011 ◽

Vol 29 (5) ◽

pp. 539-545 ◽

Cited By ~ 19

Author(s):

Michał Kuczyński ◽

Marolia Szymańska ◽

Ewa Bieć

Keyword(s):

Postural Control ◽

Dual Task ◽

Task Effect ◽

High Level

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The effects of a concurrent task on walking in persons with transfemoral amputation compared to persons without limb loss

Prosthetics and Orthotics International ◽

10.1177/0309364615596066 ◽

2015 ◽

Vol 40 (4) ◽

pp. 490-496 ◽

Cited By ~ 20

Author(s):

Sara J Morgan ◽

Brian J Hafner ◽

Valerie E Kelly

Keyword(s):

Dual Task ◽

Repeated Measures ◽

Cognitive Task ◽

Cross Sectional Study ◽

Concurrent Task ◽

Limb Loss ◽

Transfemoral Amputation ◽

Cross Sectional ◽

Time Asymmetry ◽

Single Task

Background:Many people with lower limb loss report the need to concentrate on walking. This may indicate increased reliance on cognitive resources when walking compared to individuals without limb loss.Objective:This study quantified changes in walking associated with addition of a concurrent cognitive task in persons with transfemoral amputation using microprocessor knees compared to age- and sex-matched controls.Study design:Observational, cross-sectional study.Methods:Quantitative motion analysis was used to assess walking under both single-task (walking alone) and dual-task (walking while performing a cognitive task) conditions. Primary outcomes were walking speed, step width, step time asymmetry, and cognitive task response latency and accuracy. Repeated-measures analysis of variance was used to examine the effects of task (single-task and dual-task) and group (transfemoral amputation and control) for each outcome.Results:No significant interactions between task and group were observed (all p > 0.11) indicating that a cognitive task did not differentially affect walking between groups. However, walking was slower with wider steps and more asymmetry in people with transfemoral amputation compared to controls under both conditions.Conclusion:Although there were significant differences in walking between people with transfemoral amputation and matched controls, the effects of a concurrent cognitive task on walking were similar between groups.Clinical relevanceThe addition of a concurrent task did not differentially affect walking outcomes in people with and without transfemoral amputation. However, compared to people without limb loss, people with transfemoral amputation adopted a conservative walking strategy. This strategy may reduce the need to concentrate on walking but also contributed to notable gait deviations.

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P1.104 Cognitive and motor dual task effect on posture and balance impairment in Parkinson's disease patients

Parkinsonism & Related Disorders ◽

10.1016/s1353-8020(08)70201-3 ◽

2008 ◽

Vol 14 ◽

pp. S36

Author(s):

S. Radovanovic ◽

N. Dragasevic ◽

S. Markovic ◽

D. Mirkov ◽

I. Petrovic ◽

...

Keyword(s):

Parkinson’S Disease ◽

Parkinson's Disease ◽

Dual Task ◽

Balance Impairment ◽

Task Effect

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The dual task effect on gait in adults with intellectual disabilities: is it predictive for falls?

Disability and Rehabilitation ◽

10.1080/09638288.2017.1370730 ◽

2017 ◽

Vol 41 (1) ◽

pp. 26-32 ◽

Cited By ~ 1

Author(s):

Alyt Oppewal ◽

Thessa I. M. Hilgenkamp

Keyword(s):

Intellectual Disabilities ◽

Dual Task ◽

Task Effect ◽

Adults With Intellectual Disabilities

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Effect of Template Complexity on Visual Search and Dual-Task Performance

Psychological Science ◽

10.1111/j.0956-7976.2005.00805.x ◽

2005 ◽

Vol 16 (3) ◽

pp. 208-213 ◽

Cited By ~ 7

Author(s):

Patrick A. Bourke ◽

John Duncan

Keyword(s):

Visual Search ◽

Reaction Time ◽

Task Performance ◽

Dual Task ◽

Search Time ◽

Concurrent Task ◽

Task Demands ◽

Biased Competition ◽

Task Control ◽

Dual Task Performance

Even dissimilar tasks interfere with one another when done together. We used visual search to examine the underlying cause of such interference. In many models, visual search is a process of biased competition controlled by a template describing the target to be sought. When the display is processed, matching against this template guides attention to the target. We show that increasing template complexity increased interference with a dissimilar concurrent task, story memory. This result was independent of reaction time: Increases in template complexity were associated with no increase in search time in Experiment 1 and with a decrease in search time in Experiment 2. The results show that the dual-task demands of visual search reflect the complexity of the template used in task control, and that this factor can be isolated from other sources of difficulty.

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Dual task prioritization during overground and treadmill walking

10.31234/osf.io/7dcbt ◽

2019 ◽

Author(s):

James Graeme Wrightson ◽

Nicholas J Smeeton ◽

lisa Schäfer

Keyword(s):

Task Performance ◽

Dual Task ◽

Cognitive Task ◽

Treadmill Walking ◽

Time Variability ◽

Overground Walking ◽

Task Effect ◽

Cognitive Task Performance ◽

Walking Performance ◽

Task Prioritization

AbstractBackgroundThe dual-task effect on walking performance is different during treadmill and overground walking, though the cause of this difference is unknown. This study examined the effects of task prioritization on overground and treadmill dual-task walking. MethodTwenty-two adults walked overground and on a treadmill under three dual-task conditions: prioritization of walking performance, prioritization of cognitive performance, or no prioritization. ResultsCompared to single-task walking, stride velocity was reduced and stride time variability was increased during dual-task overground walking. During treadmill walking, there was no dual-task effect on walking performance, but cognitive task performance was improved. Prioritization of the cognitive task reduced the dual-task effect on stride velocity during overground walking only, whilst prioritization of the walking task reduced cognitive task performance in both walking modalities. SignificanceThese results corroborate recent findings that the dual-task effects on treadmill walking are not equivalent to those on overground walking. Healthy adults appear to prioritize cognitive task performance during dual-task walking. However, the effects of this prioritization on dual-task performance depend on the walking modality.

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