Effects of Sit-to-stand Training With Interactive Feedback on Muscle Contraction Sequences and Weight Bearing Symmetry in Individuals With Chronic Stroke
试验速览
- 阶段
- 不适用
- 状态
- 尚未招募
- 入组人数
- 20
- 试验地点
- 1
- 主要终点
- Sit to stand performance: change in onset time of muscle contraction sequences
研究概览
简要总结
The major problems of people with chronic stroke include muscle weakness, sensory alteration, and inter-muscular coordination impairment. Inter-muscular coordination impairment caused altered muscle contraction sequences and weight-bearing asymmetry during functional activities. Sit-to-stand (STS) training is often used to improve functional activities among post-stroke subjects. However, the improvement may come from compensatory movements. Using compensatory movement may cause muscle weakness in the affected side and increase fall risk. This study will develop a novel STS training system with interactive visual and audio feedback emphasizing weight transferring and weight bearing. The present study aims to investigate the effects of sit-to-stand training with interactive visual and audio feedback on muscle contraction sequences and weight bearing symmetry in individuals with chronic stroke.
详细描述
This is a prospective randomized single-blinded controlled trial with pre- and post-measurements. 20 individuals will be recruited, and randomly assigned to experimental or control group. Statistical data analysis will be done by SPSS 24.0. Baseline characteristics will be analyzed using independent t-test or Chi-square test. Repeated measures two-way analysis of variance (ANOVA) with Tukey's post-hoc analysis will be used for time-by-group comparisons. The significant level is set at 0.05.
研究设计
- 研究类型
- Interventional
- 分配方式
- Randomized
- 干预模型
- Parallel
- 主要目的
- Treatment
- 盲法
- Single (Outcomes Assessor)
入排标准
- 年龄范围
- 20 Years 至 80 Years（Adult, Older Adult）
- 性别
- All
- 接受健康志愿者
- 否
入选标准
- •Diagnosis of stroke ≥ 6 months
- •Mini-mental state examination (MMSE) ≥ 24 points
- •Brunnstrom lower limb recovery stage: ≥ stage 3
- •Be able to independently perform STS for at least 10 times
- •Single STS >1.7 seconds
- •Be able to walk ≥10 meters independently
排除标准
- •Any other musculoskeletal, neurological and cardiovascular diseases
- •Have visual or language impairments
研究组 & 干预措施
Visual and auditory feedback STS training group
The interactive interface of visual and auditory feedback system was designed using LabVIEW and integrated force plates for training. Signals from the pressure detectors of the seat and two force plates on the floor will be converted to the indication of the body weight distribution (indicated by the size of the two circles of both legs, larger circle represented the more weight beard on the leg) and the movement path of the overall center of pressure (indicated by a mobile solid dot).
干预措施: Visual and auditory feedback STS training (Other)
Conventional STS training group
Only verbal and visual cues which were commonly used by the therapist.
干预措施: Conventional STS training (Other)
结局指标
主要结局
Sit to stand performance: change in onset time of muscle contraction sequences
时间窗: 5 minutes, Change from baseline onset time at 3-week post-test
Use the surface electromyography to evaluate the "onset" time (% MT, EMG activities ≥ 2 SD of the baseline for ≥100 ms) of different muscles recruited during sit to stand (rectus femoris, biceps femoris, gluteus maximus, tibialis anterior, gastrocnemius, and soleus)
Sit to stand performance: change in peak force time of muscle contraction sequences
时间窗: 5 minutes, Change from baseline peak force time at 3-week post-test
Use the surface electromyography to evaluate the "peak force" time (% MT, maximal EMG activities) of different muscles recruited during sit to stand (rectus femoris, biceps femoris, gluteus maximus, tibialis anterior, gastrocnemius, and soleus)
Sit to stand performance: change in offset time of muscle contraction sequences
时间窗: 5 minutes, Change from baseline offset time at 3-week post-test
Use the surface electromyography to evaluate the "offset" time (% MT, EMG activities \< 2 SD of the baseline for ≥100 ms) of different muscles recruited during sit to stand (rectus femoris, biceps femoris, gluteus maximus, tibialis anterior, gastrocnemius, and soleus)
Sit to stand performance: change in COP sway pathway
时间窗: 5 minutes, Change from baseline COP sway pathway at 3-week post-test
Use the force plates to evaluate the total length (cm) of the moving pathway of the overall center of pressure in X or Y axis individually
Sit to stand performance: change in weight bearing symmetry
时间窗: 5 minutes, Change from baseline weight bearing symmetry at 3-week post-test
Use the force plates to evaluate the "cumulative vertical force " (% of body weight), and calculate with the "asymmetry ratio" = \|1-affected side/less affected side\|
次要结局
- Gait performance: change in symmetry of step time(5 minutes, Change from baseline symmetry of step time at 3-week post-test)
- Gait performance: change in symmetry of gait speed(5 minutes, Change from baseline symmetry of gait speed at 3-week post-test)
- Gait performance: change in symmetry of step length(5 minutes, Change from baseline symmetry of step length at 3-week post-test)
- Sit to stand performance: change in sit to stand duration(5 minutes, Change from baseline sit to stand duration at 3-week post-test)