PDF(Pubmed)
Abstract：
Background and Objectives: This study focused on the impact of mental fatigue induced by motor imagery on upper limb function, an area with limited research compared to lower limb performance. It aimed to explore how diaphragmatic breathing exercises influence these effects. Materials and Methods: This study included 30 participants, and Group 1 participated in 12 sessions of diaphragmatic breathing exercises under the supervision of a physiotherapist; Group 2 did not receive any intervention. For all the participants, mental fatigue was induced with motor imagery before and after the intervention, and evaluations were performed before and after mental fatigue. Upper extremity functions were evaluated using isometric elbow flexion strength, hand grip strength, upper extremity reaction time and endurance, finger reaction time, the nine-hole peg test, shoulder position sense, light touch-pressure threshold, and two-point discrimination. Results: The study results showed that after mental fatigue, there was a decrease in isometric elbow flexion strength, nondominant hand grip strength, and nondominant upper extremity endurance, and an increase in nondominant tactile sensation (p < 0.05). No changes were found in two-point discrimination, nine-hole peg test time, and position sense on either side (p > 0.05). The effect of mental fatigue on isometric elbow flexion strength and nondominant grip strength showed significant improvement following diaphragmatic breathing exercises (p < 0.05). Conclusions: This study found that mental fatigue from motor imagery can impact elbow flexion, hand grip strength, upper extremity endurance, and tactile sensitivity. Breathing exercises may help improve strength parameters affected by mental fatigue. It is crucial to consider these effects on upper extremity functions in rehabilitation programs.
摘要：
背景和目的:本研究主要探讨运动想象引起的精神疲劳对上肢功能的影响,与下肢表现相比，研究有限。目的是探讨膈呼吸练习如何影响这些效果。材料和方法：本研究包括30名参与者，第1组在物理治疗师的监督下参加了12次膈呼吸练习;第2组未接受任何干预.对于所有参与者来说，在干预前后，运动想象会引起精神疲劳，并在精神疲劳前后进行评估。上肢功能使用等长肘关节屈曲强度进行评估，手握力,上肢反应时间和耐力，手指反应时间,九孔桩测试，肩膀位置感，轻触摸压力阈值，两点歧视。结果:研究结果表明,精神疲劳后,等长肘关节屈曲强度下降，非显性握力，和非显性上肢耐力，和非显性触感增加(p<0.05)。两点歧视没有变化，九孔钉测试时间，和两侧的位置感（p>0.05）。精神疲劳对等长肘屈曲力量和非显性握力的影响在膈肌呼吸锻炼后显示出显着改善（p<0.05）。结论：这项研究发现，运动想象引起的精神疲劳会影响肘部屈曲，手握力,上肢耐力,和触觉敏感性。呼吸练习可能有助于改善受精神疲劳影响的力量参数。在康复计划中考虑这些对上肢功能的影响至关重要。
