Short-term Postural Training for Older Adults
Study Details
Study Description
Brief Summary
Generalization refers to skill transfer under various working spaces following motor practice. The extent of generalization effect links causal to in-depth recognition of error properties during motor practice. Idiom says "imperfect practice makes perfect". It could be beneficial for the elderly to gain superior capacity of balance transfer skill under the short-term productive failure learning environments. In contrast to traditional visual feedback that uses error avoidance training to optimize target balance task, the present 3-year proposal is to propose three potential neuro-cognitive strategies to improve motor skill transfer following stabilometer training. The strategies are expected to enhance opportunities of error experience and motor exploration via modified visual feedback, underlying facilitations of attentional resource and error-related neural networks. In the first year, the neuro-cognitive strategy for balance practice is progressive augmentation of visual error size to improve balance skill transfer. In the second year, the neuro-cognitive strategy for balance practice is visual feedback with virtual uncertainness of motor goal. In the third year, the neuro-cognitive strategy for balance practice is stroboscopic vision. EEG and central of pressure will be processed with non-linear approaches. Graph theory will characterize EEG functional connectivity and brain network efficiency regarding to brain mechanisms for practice-related leaning transfer. Trajectories of central of pressure will be analyzed with stabilogram diffusion analysis to reveal behavior mechanisms for practice-related variations in feedback and feedforward process for error corrections.
Study Design
Arms and Interventions
| Arm | Intervention/Treatment |
|---|---|
| Experimental: deterministic visual error gain Day1(Pretest): stabilometer stance, 3 times/1 min air pillow stance, 3 time/30 sec poture-supraposture dual task, 3 times/1 min Day2 to Day5: Exp.group:27 times of posture tracking with high visual error gain. Control group:27 times of posture training with normal visual error gain. Day6 (Posttest): stabilometer stance, 3 times/1 min air pillow stance, 3 time/30 sec poture-supraposture dual task, 3 times/1 min |
Behavioral: size of error visual feedback
The strategies are expected to enhance opportunities of error experience and motor exploration via modified visual feedback, underlying facilitations of attentional resource and error-related neural networks.
Other Names:
|
| Experimental: stochastic visual noise Day1(Pretest): stabilometer stance, 3 times/1 min air pillow stance, 3 time/30 sec poture-supraposture dual task, 3 times/1 min Day2 to Day5: Exp.group A:27 times of posture training with posture tracking signal-to-noise ratio=2:1. Exp.group B:27 times of posture training with posture tracking signal-to-noise ratio=4:1. Control group:27 times of posture training with normal visual error gain. Day6(Posttest): stabilometer stance, 3 times/1 min air pillow stance, 3 time/30 sec poture-supraposture dual task, 3 times/1 min |
Behavioral: size of error visual feedback
The strategies are expected to enhance opportunities of error experience and motor exploration via modified visual feedback, underlying facilitations of attentional resource and error-related neural networks.
Other Names:
|
| Experimental: intermittent visual gain Day1 (Pretest): stabilometer stance with wearing flash glasses (low frequency with opaque ratio 50%), 4 times/45 sec stabilometer stance with wearing flash glasses (high frequency with opaque ratio 50%), 4 times/45 sec. stabilometer stance with wearing flash glasses (clear), 4 times/45 sec air pillow stance, 8 times/1 min Day2 (training section): Exp. group:Posture tracking with wearing flash glasses (low frequency with opaque ratio 50%), 12 times/45 sec. Control group:Posture tracking with wearing flash glasses (clear), 12 times/45 sec. Day3 (Posttest): stabilometer stance with wearing flash glasses (low frequency with opaque ratio 50%), 4 times/45 sec stabilometer stance with wearing flash glasses (high frequency with opaque ratio 50%), 4 times/45 sec stabilometer stance with wearing flash glasses (clear), 4 times/45 sec air pillow stance, 8 times/1 min |
Behavioral: size of error visual feedback
The strategies are expected to enhance opportunities of error experience and motor exploration via modified visual feedback, underlying facilitations of attentional resource and error-related neural networks.
Other Names:
|
Outcome Measures
Primary Outcome Measures
- EEG graph analysis [through study completion, an average of 1 year]
Graph theory will characterize EEG functional connectivity and brain network efficiency regarding to brain mechanisms for practice-related leaning transfer.
Secondary Outcome Measures
- stabilogram diffusion analysis of central of pressure [through study completion, an average of 1 year]
Trajectories of central of pressure will be analyzed with stabilogram diffusion analysis to reveal behavior mechanisms for practice-related variations in feedback and feedforward process for error corrections.
- root mean sqaure error of stabilometer [through study completion, an average of 1 year]
The root-mean-square value of the tracking trajectory of stabilometer and the target signal.
Eligibility Criteria
Criteria
Inclusion Criteria:
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Age above 60 years old healthy older adults without a history of falls.
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Able to understand and give informed consent.
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The Mini-Mental State Examination test score above 25-30.
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Lower limb muscle strength is evaluated as G grade
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The corrected visual acuity was within the normal range.
Exclusion Criteria:
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Any known history of mental illness
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Any neuromuscular or degenerative neurological disease(ex:stroke、SCI、TBI...etc)
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Any known history of cerebral cerebellar disease or intracranial metal implants.
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Weak of hearing or wearing a hearing aid
Contacts and Locations
Locations
| Site | City | State | Country | Postal Code | |
|---|---|---|---|---|---|
| 1 | National Chen Kong University Hospital | Taian | Eastern District | Taiwan | 701 |
Sponsors and Collaborators
- National Cheng-Kung University Hospital
- Ministry of Science and Technology, Taiwan
Investigators
- Study Chair: Hwang Ing-Shiou, Phd, NCKU, Institute of Allied Health Sciences
Study Documents (Full-Text)
None provided.More Information
Publications
None provided.- MOST 108-2314-B-006-071 -