The effect of age on the attentional demands of postural control

Marsh, Anthony P.; Geel, Stanley E.

doi:10.1016/s0966-6362(00)00074-6

Cited by 126 publications

(97 citation statements)

References 24 publications

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“…This result suggests that the response time increases when more demanding tasks are performed, a result consistent with the findings of previous studies 6,7,19,20) , which reported that divided attention during obstacle crossing degraded the obstacle avoidance capabilities of both older and young adults. For example, Marsh and Geel 21) reported that older women had slower verbal reaction times than younger women and increased reaction times in a sitting position as compared to a standing position.…”

Section: Discussionmentioning

confidence: 99%

The Effect of a Dual-Task on the Center of Pressure Trajectory of Healthy Young Adults during Obstacle Crossing

Kim

2009

J Phys Ther Sci

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Abstract.[Purpose] The purpose of this study was to examine the center of pressure (COP) trajectory and response time when young adults initiate gait and step over an obstacle while simultaneously performing a secondary Stroop task.[Subjects] Twenty healthy young adults (ten males and ten females) participated in the study.[Methods] The subjects first completed a Stroop task while standing (baseline) and then initiated gait and stepped over an obstacle at a self-paced speed with and without a secondary Stroop task. The response times to the secondary task and the COP trajectory were measured.[Results] The Stroop task response time in the stepping condition was the longest, followed by the times for initiating gait and standing conditions (p<0.01). There were main effects for both the Stroop task and stepping conditions for the mediolateral (M-L) displacement of the COP and the length of the COP path for both feet (p<0.01, respectively). However, there were no significant differences among the tasks for the anteroposterior (A-P) displacement of the COP for both feet. [Conclusion] This study suggests that divided attention degrades the obstacle avoidance abilities of healthy young adults and the apparently greater demand of postural control may prove as difficult for populations that are at risk of falling.

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Section: Discussionmentioning

confidence: 99%

The Effect of a Dual-Task on the Center of Pressure Trajectory of Healthy Young Adults during Obstacle Crossing

Kim

2009

J Phys Ther Sci

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“…beliefs relating to pain, stress, fear of pain and re-injury, depression, hypervigilance, and catastrophising). Indeed, the nature of chronic spinal pain (Burton et al, 1995;Burton and Erg, 1997;Schade et al, 1999) has the ability to disrupt spinal motor control by virtue of its demand on the central nervous system (Watson et al, 1997;Marsh and Geel, 2000;van Dieen et al, 2003;. There is now substantial evidence for the involvement of areas (such as the pre-motor cortex) that are normally linked to motor function (Casey, 1999) in pain perception.…”

Section: Motor Pattern Driven By Fear Avoidance Behaviours?mentioning

confidence: 99%

The validity of O’Sullivan’s classification system (CS) for a sub-group of NS-CLBP with motor control impairment (MCI): Overview of a series of studies and review of the literature

Dankaerts

O’Sullivan

2011

Manual Therapy

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a b s t r a c tChronic Low Back Pain (LBP) remains a common, recalcitrant and costly problem for the individual sufferer and for society. Effective treatments that reduce the social and economic burden have yet to be established for the majority of chronic LBP cases. Lack of evidence for specific interventions has been blamed on the heterogeneity of the chronic LBP population as well as a lack of a patient centred biopsycho-social approach. This issue of heterogeneity has resulted in classification being considered the highest research priority in the area of chronic LBP. The potential for a 'wash-out effect' caused by the heterogeneity of the chronic LBP populations sampled for randomised controlled clinical trials (RCTs), has driven the need for classifying patients with nonspecific chronic LBP. A summary of a series of studies is outlined in this review paper. They represent a comprehensive investigation into the validity of O'Sullivan's proposed mechanism-based classification system (CS) for a sub-group of localized mechanically provoked nonspecific chronic LBP with motor control impairment (MCI). Further, the findings of these studies are discussed in relation to the relevant literature and the clinical implications arising are presented. Finally, the limitations of this research are outlined and recommendations for future research are made.

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“…In one of these studies, younger and older adults had longer reaction times when vision and/or proprioception were perturbed than when vision and surface conditions were normal, and the older adults were more affected by the absence of vision 39) . Another study observed that older women had slower verbal reaction times than younger women and longer reaction times in a sitting position than in a standing position 41) . Kim 42) also demonstrated that the response time for obstacle crossing when a secondary Stroop task was provided was significantly longer than the response time in static standing only.…”

Section: Discussionmentioning

confidence: 97%

The Influence of a Cognitive Task on Stair Descent by Younger Adults

Dong

Ma²,

Kim

2011

J Phys Ther Sci

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Abstract.[Purpose] The aim of this study was to examine the center of pressure (COP) trajectory variables and response time when young adults descended stairs while simultaneously performing a concurrent secondary Stroop task that required direct attention. [Subjects and Methods] Twenty healthy young adults (10 males and 10 females) participated in the study. Each subject first completed a Stroop task while standing (baseline). Next, they stood in a predetermined position at the top of a custom-built 3-step staircase and negotiated the stairs at a self-paced speed with and without performance of a concurrent secondary Stroop task. Subjects were asked to place only one foot on each step (foot-over-foot). The response times to the secondary task and the COP trajectory with and without performance of the concurrent secondary Stroop task were measured.[Results] The Stroop task response time while descending stairs was significantly longer than the Stroop task response time during static standing. The mediolateral and anteroposterior displacements of COP and the length of COP path, as well as the average velocity of the COP, were significantly greater when subjects performed the secondary task than without the secondary task.[Conclusion] The study suggests that subjects' ability to descend stairs is lessened with the addition of the concurrent secondary attention-demanding task, and that the addition of divided attention tasks places an apparently higher demand on balance control that may prove to be challenging for subjects at high risk of falling.

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The effect of age on the attentional demands of postural control

Cited by 126 publications

References 24 publications

The Effect of a Dual-Task on the Center of Pressure Trajectory of Healthy Young Adults during Obstacle Crossing

The Effect of a Dual-Task on the Center of Pressure Trajectory of Healthy Young Adults during Obstacle Crossing

The validity of O’Sullivan’s classification system (CS) for a sub-group of NS-CLBP with motor control impairment (MCI): Overview of a series of studies and review of the literature

The Influence of a Cognitive Task on Stair Descent by Younger Adults

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