Effect of Aging and Cortical Stroke on Motor Adaptation to Overground Gait-Slips: Quantifying Differences in Adaptation Rate and Adaptation Plateau
We examined the effect of aging and cortical stroke on the rate of motor adaptation (adaptation rate) and amount of performance gains (adaptation plateau) in balance skills. Fourteen older (≥60 years) and fifteen younger (<60 years) adults with chronic stroke, and thirteen healthy older adults (≥...
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| Format: | Article |
| Language: | English |
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MDPI AG
2023-01-01
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| Series: | Biomechanics |
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| Online Access: | https://www.mdpi.com/2673-7078/3/1/3 |
| _version_ | 1797613384423702528 |
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| author | Rudri Purohit Shuaijie Wang Tanvi Bhatt |
| author_facet | Rudri Purohit Shuaijie Wang Tanvi Bhatt |
| author_sort | Rudri Purohit |
| collection | DOAJ |
| description | We examined the effect of aging and cortical stroke on the rate of motor adaptation (adaptation rate) and amount of performance gains (adaptation plateau) in balance skills. Fourteen older (≥60 years) and fifteen younger (<60 years) adults with chronic stroke, and thirteen healthy older adults (≥60 years) participated. Participants experienced 8 consecutive gait-slips (≤45 cm) to their non-paretic/dominant limb. Slip outcome (backward/no balance loss) was compared using generalized estimating equations (GEE). Proactive (pre-slip stability) and reactive adjustments (post-slip stability, slip displacement and velocity, and compensatory step length) were compared using non-linear regression models. GEE showed the main effect of group, trial, and group × trial interaction for slip outcome (<i>p</i> < 0.05). There were no differences in the adaptation rate for proactive and reactive variables and plateau for proactive variables (<i>p</i> > 0.05). However, both stroke groups demonstrated a smaller adaptation plateau for the majority of reactive variables compared to healthy older adults (<i>p</i> < 0.05). The rate of adaptation to gait-slips does not slow with aging and cortical stroke; however, cortical stroke, age notwithstanding, may reduce performance gains in reactive balance skills, possibly hindering retention and transfer to real-life scenarios. People with stroke may need adjunctive therapies/supplemental agents to apply laboratory-acquired balance skills to daily life. |
| first_indexed | 2024-03-11T06:55:05Z |
| format | Article |
| id | doaj.art-ff486faa64284aef91a68cd4c350a679 |
| institution | Directory Open Access Journal |
| issn | 2673-7078 |
| language | English |
| last_indexed | 2024-03-11T06:55:05Z |
| publishDate | 2023-01-01 |
| publisher | MDPI AG |
| record_format | Article |
| series | Biomechanics |
| spelling | doaj.art-ff486faa64284aef91a68cd4c350a6792023-11-17T09:43:08ZengMDPI AGBiomechanics2673-70782023-01-0131294410.3390/biomechanics3010003Effect of Aging and Cortical Stroke on Motor Adaptation to Overground Gait-Slips: Quantifying Differences in Adaptation Rate and Adaptation PlateauRudri Purohit0Shuaijie Wang1Tanvi Bhatt2Department of Physical Therapy, College of Applied Health Sciences, University of Illinois, Chicago, IL 60612, USADepartment of Physical Therapy, College of Applied Health Sciences, University of Illinois, Chicago, IL 60612, USADepartment of Physical Therapy, College of Applied Health Sciences, University of Illinois, Chicago, IL 60612, USAWe examined the effect of aging and cortical stroke on the rate of motor adaptation (adaptation rate) and amount of performance gains (adaptation plateau) in balance skills. Fourteen older (≥60 years) and fifteen younger (<60 years) adults with chronic stroke, and thirteen healthy older adults (≥60 years) participated. Participants experienced 8 consecutive gait-slips (≤45 cm) to their non-paretic/dominant limb. Slip outcome (backward/no balance loss) was compared using generalized estimating equations (GEE). Proactive (pre-slip stability) and reactive adjustments (post-slip stability, slip displacement and velocity, and compensatory step length) were compared using non-linear regression models. GEE showed the main effect of group, trial, and group × trial interaction for slip outcome (<i>p</i> < 0.05). There were no differences in the adaptation rate for proactive and reactive variables and plateau for proactive variables (<i>p</i> > 0.05). However, both stroke groups demonstrated a smaller adaptation plateau for the majority of reactive variables compared to healthy older adults (<i>p</i> < 0.05). The rate of adaptation to gait-slips does not slow with aging and cortical stroke; however, cortical stroke, age notwithstanding, may reduce performance gains in reactive balance skills, possibly hindering retention and transfer to real-life scenarios. People with stroke may need adjunctive therapies/supplemental agents to apply laboratory-acquired balance skills to daily life.https://www.mdpi.com/2673-7078/3/1/3reactive balancestabilitymotor adaptationfall preventionstrokeaging |
| spellingShingle | Rudri Purohit Shuaijie Wang Tanvi Bhatt Effect of Aging and Cortical Stroke on Motor Adaptation to Overground Gait-Slips: Quantifying Differences in Adaptation Rate and Adaptation Plateau Biomechanics reactive balance stability motor adaptation fall prevention stroke aging |
| title | Effect of Aging and Cortical Stroke on Motor Adaptation to Overground Gait-Slips: Quantifying Differences in Adaptation Rate and Adaptation Plateau |
| title_full | Effect of Aging and Cortical Stroke on Motor Adaptation to Overground Gait-Slips: Quantifying Differences in Adaptation Rate and Adaptation Plateau |
| title_fullStr | Effect of Aging and Cortical Stroke on Motor Adaptation to Overground Gait-Slips: Quantifying Differences in Adaptation Rate and Adaptation Plateau |
| title_full_unstemmed | Effect of Aging and Cortical Stroke on Motor Adaptation to Overground Gait-Slips: Quantifying Differences in Adaptation Rate and Adaptation Plateau |
| title_short | Effect of Aging and Cortical Stroke on Motor Adaptation to Overground Gait-Slips: Quantifying Differences in Adaptation Rate and Adaptation Plateau |
| title_sort | effect of aging and cortical stroke on motor adaptation to overground gait slips quantifying differences in adaptation rate and adaptation plateau |
| topic | reactive balance stability motor adaptation fall prevention stroke aging |
| url | https://www.mdpi.com/2673-7078/3/1/3 |
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