Purpose: The purpose of this study was to investigate the effects of Micro Vibrational therapy (MVT) on muscle stiffness and blood flow in the skin before and after Micro Vibrational therapy in healthy subjects in ord...Purpose: The purpose of this study was to investigate the effects of Micro Vibrational therapy (MVT) on muscle stiffness and blood flow in the skin before and after Micro Vibrational therapy in healthy subjects in order to scientifically verify the effects of MVT. Methods: Micro Vibrational therapy is nurse care use in Japan. It was performed on the backs of 30 subjects (8 males and 22 females) in their 20 s to 50 s according to the eligibility criteria. The resting state before implementation was set as the baseline for the control group, and after 30 seconds of MVT was set as the intervention group. The effects of the MVT were statistically analyzed by these factors and subjective sensation by Visual Analog Scale. Results: The muscle hardness of the area where the MVT was applied for 30 seconds decreased to 29.54 (SD 5.04) after the application, compared to 30.45 (SD 5.05) before. A corresponding t-test showed a significant difference (p = 0.019). Skin blood flow increased from a median of 0.76 (variance 0.062) before to a median of 0.86 (variance 0.16) after the procedure. The Wilcoxon rank test showed a significant difference (p = 0.000). Circulatory response was confirmed by SBP, DBP, and HR. SBP of 108.6 mmHg (SD 14.8) before the study decreased to 105.7 mmHg (SD 15.0) after the study, and DBP of 65.6 mmHg (SD 11.1) before the study decreased to 62.7 mmHg (SD 11.8) after the study. HR decreased from 71.6 beats per minute (SD 10.3) before to 69.2 beats per minute (SD 11.7) after. There was a significant difference in all cardiovascular indices (p < 0.05). VAS (pain, stiffness, and fatigue) was significantly decreased after MVT (p < 0.05). Conclusion: Micro Vibrational therapy tended to decrease muscle hardness and increase skin blood flow even in the short time of 30 seconds. The results suggest that local vibration stimulation is not likely to cause a sudden increase in blood pressure or pulse rate fluctuation. These results suggest that hand vibration nursing care may be applicable to acute patients with u展开更多
根据人体肌肉硬度与肌肉舒适度具有因果关系的生理学特性,进行了由一组志愿者参与的、旨在研究操控件不同布局设计下人体静态姿势对肌肉硬度影响的试验。利用肌肉硬度仪测量了一组受试者在不同静态操作姿势下人体各相关肌肉硬度的变化情...根据人体肌肉硬度与肌肉舒适度具有因果关系的生理学特性,进行了由一组志愿者参与的、旨在研究操控件不同布局设计下人体静态姿势对肌肉硬度影响的试验。利用肌肉硬度仪测量了一组受试者在不同静态操作姿势下人体各相关肌肉硬度的变化情况,得到不同姿势下肌肉硬度的变化规律。通过对试验测得的肌肉硬度数据进行归一化处理并依据相关肌肉横断面积进行加权计算,给出肌肉舒适指数的概念;针对人体上身2自由度、3自由度关节动作情况,分别给出综合肌肉舒适指数的计算方法;最终提出了基于肌肉硬度试验数据的人体舒适度评价准则(Assessment system based on muscle hardness experiments,ASMH)。通过与工程中广泛采用的快速上肢评价准则(Rapid upper limb assessment,RULA)对比可知,此评价准则的准确度和适用性有所提高,评分值范围增加为1至12,评价等级增加至六个等级,更适合于操控件布局设计的人机工程学优化设计。展开更多
文摘Purpose: The purpose of this study was to investigate the effects of Micro Vibrational therapy (MVT) on muscle stiffness and blood flow in the skin before and after Micro Vibrational therapy in healthy subjects in order to scientifically verify the effects of MVT. Methods: Micro Vibrational therapy is nurse care use in Japan. It was performed on the backs of 30 subjects (8 males and 22 females) in their 20 s to 50 s according to the eligibility criteria. The resting state before implementation was set as the baseline for the control group, and after 30 seconds of MVT was set as the intervention group. The effects of the MVT were statistically analyzed by these factors and subjective sensation by Visual Analog Scale. Results: The muscle hardness of the area where the MVT was applied for 30 seconds decreased to 29.54 (SD 5.04) after the application, compared to 30.45 (SD 5.05) before. A corresponding t-test showed a significant difference (p = 0.019). Skin blood flow increased from a median of 0.76 (variance 0.062) before to a median of 0.86 (variance 0.16) after the procedure. The Wilcoxon rank test showed a significant difference (p = 0.000). Circulatory response was confirmed by SBP, DBP, and HR. SBP of 108.6 mmHg (SD 14.8) before the study decreased to 105.7 mmHg (SD 15.0) after the study, and DBP of 65.6 mmHg (SD 11.1) before the study decreased to 62.7 mmHg (SD 11.8) after the study. HR decreased from 71.6 beats per minute (SD 10.3) before to 69.2 beats per minute (SD 11.7) after. There was a significant difference in all cardiovascular indices (p < 0.05). VAS (pain, stiffness, and fatigue) was significantly decreased after MVT (p < 0.05). Conclusion: Micro Vibrational therapy tended to decrease muscle hardness and increase skin blood flow even in the short time of 30 seconds. The results suggest that local vibration stimulation is not likely to cause a sudden increase in blood pressure or pulse rate fluctuation. These results suggest that hand vibration nursing care may be applicable to acute patients with u
文摘根据人体肌肉硬度与肌肉舒适度具有因果关系的生理学特性,进行了由一组志愿者参与的、旨在研究操控件不同布局设计下人体静态姿势对肌肉硬度影响的试验。利用肌肉硬度仪测量了一组受试者在不同静态操作姿势下人体各相关肌肉硬度的变化情况,得到不同姿势下肌肉硬度的变化规律。通过对试验测得的肌肉硬度数据进行归一化处理并依据相关肌肉横断面积进行加权计算,给出肌肉舒适指数的概念;针对人体上身2自由度、3自由度关节动作情况,分别给出综合肌肉舒适指数的计算方法;最终提出了基于肌肉硬度试验数据的人体舒适度评价准则(Assessment system based on muscle hardness experiments,ASMH)。通过与工程中广泛采用的快速上肢评价准则(Rapid upper limb assessment,RULA)对比可知,此评价准则的准确度和适用性有所提高,评分值范围增加为1至12,评价等级增加至六个等级,更适合于操控件布局设计的人机工程学优化设计。
