P2.016 Cognitive and motor mediators of the changes in gait stability during dual tasking in healthy older adults

2008 ◽  
Vol 14 ◽  
pp. S47-S48
Author(s):  
J.M. Hausdorff ◽  
G. Yogev-Seligmann ◽  
T. Herman ◽  
M. Brozgol ◽  
A. Weiss ◽  
...  
Keyword(s):  
Older Adults ◽  
Dual Tasking ◽  
Gait Stability ◽  
Healthy Older Adults

scholarly journals Older adults demonstrate interlimb transfer of reactive gait adaptations to repeated unpredictable gait perturbations

2019 ◽  
Author(s):  
Christopher McCrum ◽  
Kiros Karamanidis ◽  
Lotte Grevendonk ◽  
Wiebren Zijlstra ◽  
Kenneth Meijer
Keyword(s):  
Older Adults ◽  
Age Differences ◽  
Gait Stability ◽  
Kinematic Data ◽  
Healthy Older Adults ◽  
Motor Error ◽  
The Right ◽  
Walking Speeds ◽  
Treadmill Belt ◽  
Gait Perturbations

AbstractThe ability to rapidly adjust gait to cope with unexpected mechanical perturbations declines with ageing. Previous studies however, have not ensured that pre-perturbation gait stability was equivalent, meaning that differences in unperturbed gait stability may have influenced the outcomes, which this study addresses. We also examine if interlimb transfer of gait adaptations are observed in healthy older adults, potentially driven by the increased motor error experienced due to their reduced ability to cope with the perturbations. 30 young and 28 older healthy adults experienced ten unpredictable treadmill belt accelerations (the first and last applied to the right leg, the others to the left) during walking at their stability-normalised walking speeds (young: 1.32±0.07m/s; older: 1.31±0.13m/s). Using kinematic data, we assessed the margins of stability during unperturbed walking and the first eight post-perturbation recovery steps. Older adults required three more steps to recover during the first perturbation to each leg than the young adults. Yet, after repeated perturbations of the left leg, older adults required only one more step to recover. Interestingly, for the untrained right leg, we found an improvement of three steps in the recovery of the older adults, indicating interlimb transfer of the improvements. Age differences in reactive gait stability remain even when participants’ walk with equivalent stability. Furthermore, we show that healthy older adults can transfer improvements in balance recovery made during repeated perturbations to one limb to their recovery following a perturbation to the untrained limb.

scholarly journals Older adults demonstrate interlimb transfer of reactive gait adaptations to repeated unpredictable gait perturbations

GeroScience ◽  
2019 ◽  
Vol 42 (1) ◽  
pp. 39-49 ◽  
Author(s):  
Christopher McCrum ◽  
Kiros Karamanidis ◽  
Lotte Grevendonk ◽  
Wiebren Zijlstra ◽  
Kenneth Meijer
Keyword(s):  
Older Adults ◽  
Age Groups ◽  
Gait Stability ◽  
Kinematic Data ◽  
Healthy Older Adults ◽  
Age Related ◽  
The Right ◽  
Walking Speeds ◽  
Treadmill Belt ◽  
Gait Perturbations

AbstractThe ability to rapidly adjust gait to cope with unexpected mechanical perturbations declines with ageing. Previous studies, however, have not ensured that gait stability pre-perturbation was equivalent across participants or age groups which may have influenced the outcomes. In this study, we investigate if age-related differences in stability following gait perturbations remain when all participants walk with equivalent stability. We also examine if interlimb transfer of gait adaptations are observed in healthy older adults, by examining if adaptation to repeated perturbations of one leg can benefit stability recovery when the other leg is perturbed. During walking at their stability-normalised walking speeds (young: 1.32 ± 0.07 m/s; older: 1.31 ± 0.13 m/s; normalised to an average margin of stability of 0.05 m), 30 young and 28 older healthy adults experienced ten unpredictable treadmill belt accelerations (the first and last applied to the right leg, the others to the left leg). Using kinematic data, we assessed the margins of stability during unperturbed walking and the first eight post-perturbation recovery steps. Older adults required three more steps to recover during the first perturbation to each leg than the young adults. Yet, after repeated perturbations of the left leg, older adults required only one more step to recover. Interestingly, for the untrained right leg, the older adults could regain stability with three fewer steps, indicating interlimb transfer of the improvements. Age differences in reactive gait stability remain even when participants’ walk with equivalent stability. Furthermore, we show that healthy older adults can transfer improvements in balance recovery made during repeated perturbations to one limb to their recovery following a perturbation to the untrained limb.

Characterization of cognitive and motor performance during dual-tasking in healthy older adults and patients with Parkinson’s disease

2012 ◽  
Vol 260 (2) ◽  
pp. 580-589 ◽  
Author(s):  
Lucia Bartmann Wild ◽  
Daiane Borba Lima ◽  
Joana Bisol Balardin ◽  
Luana Rizzi ◽  
Bruno Lima Giacobbo ◽  
...  
Keyword(s):  
Older Adults ◽  
Parkinson’S Disease ◽  
Parkinson's Disease ◽  
Motor Performance ◽  
Dual Tasking ◽  
Healthy Older Adults

scholarly journals Effects of dichotic listening on gait domains of healthy older adults during dual-tasking: An exploratory observational study

2021 ◽  
Vol 75 ◽  
pp. 102720
Author(s):  
Susana A. Castro-Chavira ◽  
Marta M. Gorecka ◽  
Olena Vasylenko ◽  
Claudia Rodríguez-Aranda
Keyword(s):  
Older Adults ◽  
Observational Study ◽  
Dichotic Listening ◽  
Dual Tasking ◽  
Healthy Older Adults

scholarly journals The Effects of Different Types of Dual Tasking on Balance in Healthy Older Adults

2021 ◽  
Vol 11 (9) ◽  
pp. 933
Author(s):  
Graça Monteiro de Barros ◽  
Filipe Melo ◽  
Josefa Domingos ◽  
Raul Oliveira ◽  
Luís Silva ◽  
...  
Keyword(s):  
Older Adults ◽  
Cognitive Processes ◽  
Dual Task ◽  
Balance Control ◽  
Cognitive Task ◽  
Motor Task ◽  
Dual Tasking ◽  
Healthy Older Adults ◽  
Single Motor ◽  
Different Types

Numerous of our daily activities are performed within multitask or dual task conditions. These conditions involve the interaction of perceptual and motor processes involved in postural control. Age-related changes may negatively impact cognition and balance control. Studies identifying changes related to dual-task actions in older people are need. This study aimed to determine the effects of different types of dual-tasking on the balance control of healthy older adults. The sample included 36 community-living older adults, performing two tests—a sway test and a timed up-and-go test—in three conditions: (a) single motor task; (b) dual motor task; and (c) dual motor task with cognitive demands. Cognitive processes (dual-task and cognition) affected static balance, increasing amplitude (p < 0.001) and frequency (p < 0.001) of the center of mass displacements. Dynamic balance revealed significant differences between the single motor condition and the other two conditions during gait phases (p < 0.001). The effect of dual-tasking in older adults suggests that cognitive processes are a main cause of increased variability in balance and gait when under an automatic control. During sit-to-stand, turning, and turn-to-sit movements under dual-tasking, the perceptive information becomes the most important focus of attention, while any cognitive task becomes secondary.

scholarly journals Acute Effects of a Perturbation-Based Balance Training on Cognitive Performance in Healthy Older Adults: A Pilot Study

2021 ◽  
Vol 3 ◽  
Author(s):  
Dario Martelli ◽  
Jiyeon Kang ◽  
Federica Aprigliano ◽  
Ursula M. Staudinger ◽  
Sunil K. Agrawal
Keyword(s):  
Older Adults ◽  
Cognitive Performance ◽  
Center Of Mass ◽  
Balance Training ◽  
Heel Strike ◽  
Control Group ◽  
Information Processing Speed ◽  
Comparable Amount ◽  
Gait Stability ◽  
Healthy Older Adults

Aging is accompanied by an alteration in the capacity to ambulate, react to external balance perturbations, and resolve cognitive tasks. Perturbation-based balance training has been used to induce adaptations of gait stability and reduce fall risk. The compensatory reactions generated in response to external perturbations depend on the activation of specific neural structures. This suggests that training balance recovery reactions should show acute cognitive training effects. This study aims to investigate whether exposure to repeated balance perturbations while walking can produce acute aftereffects that improve proactive and reactive strategies to control gait stability and cognitive performance in healthy older adults. It is expected that an adaptation of the recovery reactions would be associated with increased selective attention and information processing speed. Twenty-eight healthy older adults were assigned to either an Experimental (EG) or a Control Group (CG). The protocol was divided in 2 days. During the first visit, all participants completed the Symbol Digit Modalities Test (SDMT) and the Trail Making Test (TMT). During the second visit, a cable-driven robot was used to apply waist-pull perturbations while walking on a treadmill. The EG was trained with multidirectional perturbations of increasing intensity. The CG walked for a comparable amount of time with cables on, but without experiencing perturbations. Before and after the training, all participants were exposed to diagonal waist-pull perturbations. Changes in gait stability were evaluated by comparing the distance between the heel of the leading leg and the extrapolated Center of Mass (Heel-XCoM Distance—HXD) at perturbation onset (PON) and first compensatory heel strike (CHS). Finally, the cables were removed, and participants completed the SDMT and the TMT again. Results showed that only the EG adapted the gait stability (p &lt; 0.001) in reaction to diagonal perturbations and showed improved performance in the SDMT (p &lt; 0.001). This study provides the first evidence that a single session of perturbation-based balance training produce acute aftereffects in terms of increased cognitive performance and gait stability in healthy older adults. Future studies will include measures of functional activation of the cerebral cortex and examine whether a multi-session training will demonstrate chronic effects.

Partner-Specific Communication Deficits in Individuals With Alzheimer's Disease

2020 ◽  
pp. 1-15
Author(s):  
Eun Jin Paek ◽  
Si On Yoon
Keyword(s):  
Alzheimer’S Disease ◽  
Older Adults ◽  
Alzheimer's Disease ◽  
Referential Communication ◽  
Sorting Task ◽  
Audience Design ◽  
Healthy Older Adults ◽  
Communication Task ◽  
Design Skills ◽  
Referential Expressions

Purpose Speakers adjust referential expressions to the listeners' knowledge while communicating, a phenomenon called “audience design.” While individuals with Alzheimer's disease (AD) show difficulties in discourse production, it is unclear whether they exhibit preserved partner-specific audience design. The current study examined if individuals with AD demonstrate partner-specific audience design skills. Method Ten adults with mild-to-moderate AD and 12 healthy older adults performed a referential communication task with two experimenters (E1 and E2). At first, E1 and participants completed an image-sorting task, allowing them to establish shared labels. Then, during testing, both experimenters were present in the room, and participants described images to either E1 or E2 (randomly alternating). Analyses focused on the number of words participants used to describe each image and whether they reused shared labels. Results During testing, participants in both groups produced shorter descriptions when describing familiar images versus new images, demonstrating their ability to learn novel knowledge. When they described familiar images, healthy older adults modified their expressions depending on the current partner's knowledge, producing shorter expressions and more established labels for the knowledgeable partner (E1) versus the naïve partner (E2), but individuals with AD were less likely to do so. Conclusions The current study revealed that both individuals with AD and the control participants were able to acquire novel knowledge, but individuals with AD tended not to flexibly adjust expressions depending on the partner's knowledge state. Conversational inefficiency and difficulties observed in AD may, in part, stem from disrupted audience design skills.

Talk or Walk? Gait Speed over Self-Report in Association with Cognitive Speed in Healthy Older Adults

GeroPsych ◽  
2019 ◽  
Vol 32 (1) ◽  
pp. 41-52
Author(s):  
Matthew C. Costello ◽  
Shane J. Sizemore ◽  
Kimberly E. O’Brien ◽  
Lydia K. Manning
Keyword(s):  
Older Adults ◽  
Older Adult ◽  
Gait Speed ◽  
Well Being ◽  
Self Report ◽  
Subjective Report ◽  
Healthy Older Adults ◽  
Relative Value ◽  
Cognitive Speed ◽  
Age Range

Abstract. This study explores the relative value of both subjectively reported cognitive speed and gait speed in association with objectively derived cognitive speed. It also explores how these factors are affected by psychological and physical well-being. A group of 90 cognitively healthy older adults ( M = 73.38, SD = 8.06 years, range = 60–89 years) were tested in a three-task cognitive battery to determine objective cognitive speed as well as measures of gait speed, well-being, and subjective cognitive speed. Analyses indicated that gait speed was associated with objective cognitive speed to a greater degree than was subjective report, the latter being more closely related to well-being than to objective cognitive speed. These results were largely invariant across the 30-year age range of our older adult sample.

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