Interactions of age and leg muscle fatigue on unobstructed walking and obstacle crossing

Barbieri, Fábio Augusto; Santos, Paulo Cezar Rocha dos; Simieli, Lucas; Orcioli‐Silva, Diego; Dieën, Jaap H. van; Gobbi, Lilian Teresa Bucken

doi:10.1016/j.gaitpost.2013.12.021

Cited by 48 publications

(66 citation statements)

References 29 publications

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“…Our results show that after training, people with AD presented increased stride length, stride velocity and decreased stride duration. These findings suggest that physical activity can improve the mobility of patients, particularly enhancing balance control in the sagittal plane [24][25][26] . Hof and collaborators indicated that a stable gait depends on step length, step time and speed 25 .…”

Section: Discussionmentioning

confidence: 99%

“…Thus, an increase in stride length indicates a larger support base, consequently increasing the area of CoM displacement. An increase in stride velocity and decrease in stride duration are associated with recovery of CoM, in other words, the subject can quickly control the CoM displacement, thus increasing gait stability 26 . In addition, studies have reported that a decrease in stride duration may be a strategy to shorten the unstable phases of the gait cycle (e.g., single leg support times 26 ).…”

Section: Discussionmentioning

confidence: 99%

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A program of physical activity improves gait impairment in people with Alzheimer's disease

Orcioli‐Silva

Barbieri

Simieli

et al. 2018

Motriz: rev. educ. fis.

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-Aim:This study aimed to identify the effects of aging and Alzheimer's disease (AD) on gait parameters after a four-month period and to investigate the effects of a four-month program of physical activity, with emphasis on the cognitive components of gait during single and dual task, in people with AD. Methods: Twenty-three people with AD, divided into the Training Group (TG; n=12; aged 79.17±7.62 years) and the Control Group (CG; n=11; aged 77.00±5.57 years), and eleven healthy older adults (Healthy Group -HG; aged 75.82±4.83 years) were included in this study. TG participated in a physical activity program for four months. The CG and HG were instructed not to participate in any kind of regular physical activity in this period. The physical activity program includes motor activities and cognitive tasks simultaneously. The participants attended a 1-h session three times a week. The kinematic parameters of gait were analyzed under two conditions, before and after a physical activity program: single and dual task. Deltas for all dependent variables between pre and post training were calculated. The deltas were compared using two-way ANOVAs with group (TG x CG and CG x HG) and task (single x dual task) as factors, with repeated measures for task. Results: After the training period, the TG improved stride length, duration, velocity and cadence compared to the CG. Conclusion: Physical activity with emphasis on cognitive components promotes better reallocation of attention while walking in people with AD, improving attentional focus on the gait and thus resulting in a safer locomotive pattern.

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Section: Discussionmentioning

confidence: 99%

Section: Discussionmentioning

confidence: 99%

A program of physical activity improves gait impairment in people with Alzheimer's disease

Orcioli‐Silva

Barbieri

Simieli

et al. 2018

Motriz: rev. educ. fis.

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“…In healthy young and older adults (who are not affected by confounding factors from neurological disorders), lower muscle strength and muscle fatigue have been shown to affect both balance and gait performance (the latter including a decreased velocity, stride length, and gait stability). [43][44][45][46] In hemiparetic stroke patients, weakness of the affected leg has been identified as one of the most important predictors of balance disability and abnormal gait, independently of other factors related to stroke pathology. 18,19 Specifically, lower strength in the most affected leg may cause a smaller range of motion and thereby promote a more asymmetric gait.…”

Section: Altered Gait In Traumatic Brain Injury Patientsmentioning

confidence: 99%

Associations between Muscle Strength Asymmetry and Impairments in Gait and Posture in Young Brain-Injured Patients

Drijkoningen

Caeyenberghs

Linden³

et al. 2015

Journal of Neurotrauma

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Traumatic brain injury (TBI) can lead to deficits in gait and posture, which are often asymmetric. A possible factor mediating these deficits may be asymmetry in strength of the leg muscles. However, muscle strength in the lower extremities has rarely been investigated in (young) TBI patients. Here, we investigated associations between lower-extremity muscle weakness, strength asymmetry, and impairments in gait and posture in young TBI patients. A group of young patients with moderate-to-severe TBI (n=19; age, 14 years 11 months ±2 years) and a group of typically developing subjects (n=31; age, 14 years 1 month±3 years) participated in this study. A force platform was used to measure postural sway to quantify balance control during normal standing and during conditions of compromised visual and/or somatosensory feedback. Spatiotemporal gait parameters were assessed during comfortable and fast-speed walking, using an electronic walkway. Muscle strength in four lower-extremity muscle groups was measured bilaterally using a handheld dynamometer. Findings revealed that TBI patients had poorer postural balance scores across all sensory conditions, as compared to typically developing subjects. During comfortable and fast gait, TBI patients demonstrated a lower gait velocity, longer double-support phase, and increased step-length asymmetry. Further, TBI patients had a reduced strength of leg muscles and an increased strength asymmetry. Correlation analyses revealed that asymmetry in muscle strength was predictive of a poorer balance control and a more variable and asymmetric gait. To the best of our knowledge, this is the first study to measure strength asymmetry in leg muscles of a sample of TBI patients and illustrate the importance of muscular asymmetry as a potential marker and possible risk factor of impairments in control of posture and gait.

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“…Basal ganglia damage may be associated with sensory and perceptual deficits [43,44] as well as right hemisphere damage, which is responsible for visuospatial processing [45]. On the other hand, reduced gait velocity and stride length increases instability during walking [46][47][48]. To deal with this unstable gait, people with PD increased the basis of support (stride width) during the approach phase.…”

Section: Discussionmentioning

confidence: 99%

“…Obstacle circumvention to the most affected side seemed to increase the need to guarantee the accuracy and precision of foot placement and the path to obstacle circumvention. To deal with this need is the reduced gait velocity during approach and circumvention phases during obstacle circumvention to the most affected side, which increased the time to plan the foot position and to place the foot precisely [48,54]. Due to the proprioceptive [43] and working memory [55] deficits usually observed in people with PD, they are more dependent on the availability of visual information in an on-line mode to fine tune the accuracy of foot placement [8].…”

Section: Strategies Of People With Pd To Deal With Asymmetry When Cirmentioning

confidence: 99%

Obstacle circumvention and eye coordination during walking to least and most affected side in people with Parkinson’s disease

Barbieri

Polastri

Gobbi

et al. 2018

Behavioural Brain Research

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Interactions of age and leg muscle fatigue on unobstructed walking and obstacle crossing

Cited by 48 publications

References 29 publications

A program of physical activity improves gait impairment in people with Alzheimer's disease

A program of physical activity improves gait impairment in people with Alzheimer's disease

Associations between Muscle Strength Asymmetry and Impairments in Gait and Posture in Young Brain-Injured Patients

Obstacle circumvention and eye coordination during walking to least and most affected side in people with Parkinson’s disease

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