Mirror Illusion Training to Improve Contralateral Arm Strength
试验速览
- 阶段
- 不适用
- 入组人数
- 20
- 试验地点
- 4
- 主要终点
- Change in lean mass for the trained and untrained arm
研究概览
简要总结
Cross-education describes the transfer of motor performance to the opposite limb following unilateral training and is primarily explained by adaptations within the brain. The mirror training hypothesis suggests that illusionary mirror visual feedback may augment the cross-education of strength to the untrained, contralateral limb. The purpose of this project is to examine how the use of illusionary mirror visual feedback shapes the neuromuscular adaptations that occur for both limbs during unilateral (single-limb) strength training. Our hypothesis is that mirror training will augment the level of cross-education for the untrained arm.
详细描述
Recent empirical evidence shows a heightened level of strength transfer with the use of illusionary mirror visual feedback, but this was shown for the small muscles of the wrist during isokinetic training. It is unknown if larger, multi-joint muscles respond favorably to mirror training in practical settings. A randomized controlled study design will allocate approximately 20 participants into two groups. One group will perform unilateral strength training with illusionary mirror visual feedback (Mirror) and the other will perform the same unilateral strength training but without a mirror (No-Mirror). The intervention will involve four weeks of unilateral strength training performed twice weekly at high intensities (>80%1RM).
研究设计
- 研究类型
- Interventional
- 分配方式
- Randomized
- 干预模型
- Parallel
- 主要目的
- Basic Science
- 盲法
- Single (Outcomes Assessor)
入排标准
- 年龄范围
- 18 Years 至 35 Years（Adult）
- 性别
- All
- 接受健康志愿者
- 是
入选标准
- •right-hand dominance
- •no previous strength training of upper body last 3 months
- •no injuries or recent surgeries of the upper limbs
- •willingness to adhere to the strength training requirements of the study
排除标准
- •current use of hormone replacement therapy
- •pregnancy/breastfeeding
结局指标
主要结局
Change in lean mass for the trained and untrained arm
时间窗: Baseline (week 0), mid-training (week 2), post-training (week 5)
DEXA (g)
Change in muscle thickness for the trained and untrained arm
时间窗: Baseline (week 0), mid-training (week 2), post-training (week 5)
Ultrasound muscle thickness (cm)
Change in muscle activation for the trained and untrained arm
时间窗: Baseline (week 0) post-training (week 5)
Electromyographic amplitude (volts)
Change in dynamic muscle strength for the trained and untrained arm
时间窗: Baseline (week 0) post-training (week 5)
Dynamic 1-repetition maximum (lbs)
Change in isometric muscle strength for the trained and untrained arm
时间窗: Baseline (week 0) post-training (week 5)
Isometric maximal voluntary contraction
次要结局
未报告次要终点
研究者
Joshua Carr
Assistant Professor
Texas Christian University