Abstract：
BACKGROUND: Local high-frequency percussive (HFP) massage has recently found widespread application in physical therapy. Although HFP massage reportedly improves range of motion (ROM), the mechanism underlying its action has not yet been proven. This study aimed to clarify whether a 5-minute percussive massage regimen affects muscular or connective tissues, such as the deep fascia and deep intermuscular fascia and the change in joint ROM.
METHODS: The study sample was calculated using G*Power analysis program, and this study enrolled 15 healthy men who underwent 5-minute HFP massage to the medial gastrocnemius muscle. Shear-wave elastography was used to measure tissue stiffness in the deep fascia, muscle, and deep intermuscular fascia through shear-wave velocity as well as the ROM of the volunteers\' ankle joint dorsiflexion before and after the HFP massage. A value of P < .05 was used to declare statistical significance, and post hoc was used to calculate the effect size using G*Power.
RESULTS: Shear-wave velocity revealed a significant change in the deep fascia (P = .003; shear-wave velocity: -0.7 m/s) and significant increase in ROM of ankle dorsiflexion (P = .002; increase in ROM: 3.0°) after 5 minutes of HFP massage. However, the muscle and deep intermuscular fascia did not exhibit any significant changes.
CONCLUSIONS: HFP massage for 5 minutes modified the stiffness of the deep fascia and concurrently improved the ankle joint-dorsiflexion ROM. This method can be used as an intervention to decrease stiffness of the deep fascia and increase the ROM efficiently.
METHODS: The study sample was calculated using G*Power analysis program, and this study enrolled 15 healthy men who underwent 5-minute HFP massage to the medial gastrocnemius muscle. Shear-wave elastography was used to measure tissue stiffness in the deep fascia, muscle, and deep intermuscular fascia through shear-wave velocity as well as the ROM of the volunteers\' ankle joint dorsiflexion before and after the HFP massage. A value of P < .05 was used to declare statistical significance, and post hoc was used to calculate the effect size using G*Power.
RESULTS: Shear-wave velocity revealed a significant change in the deep fascia (P = .003; shear-wave velocity: -0.7 m/s) and significant increase in ROM of ankle dorsiflexion (P = .002; increase in ROM: 3.0°) after 5 minutes of HFP massage. However, the muscle and deep intermuscular fascia did not exhibit any significant changes.
CONCLUSIONS: HFP massage for 5 minutes modified the stiffness of the deep fascia and concurrently improved the ankle joint-dorsiflexion ROM. This method can be used as an intervention to decrease stiffness of the deep fascia and increase the ROM efficiently.
摘要：
背景：局部高频冲击（HFP）按摩最近在物理治疗中得到了广泛的应用。尽管据报道HFP按摩可改善运动范围（ROM），其作用背后的机制尚未得到证实。这项研究旨在阐明5分钟的冲击按摩方案是否会影响肌肉或结缔组织，如深筋膜和深肌间筋膜和关节ROM的变化。
方法：使用G*Power分析程序计算研究样本，这项研究招募了15名健康男性，他们对腓肠肌内侧进行了5分钟的HFP按摩。剪切波弹性成像用于测量深筋膜的组织硬度，肌肉，HFP按摩前后，通过剪切波速度以及志愿者踝关节背屈的ROM和深层肌间筋膜。P<.05的值用于说明统计学意义，和事后使用G*Power计算效应大小。
结果：HFP按摩5分钟后，剪切波速度显示深筋膜有明显变化（P=.003；剪切波速度：-0.7m/s），踝关节背屈ROM明显增加（P=.002；ROM增加：3.0°）。然而,肌肉和深层肌间筋膜没有任何明显变化。
结论：HFP按摩5分钟可改善深筋膜的刚度，同时改善踝关节背屈ROM。该方法可以用作干预措施，以降低深筋膜的刚度并有效地增加ROM。
方法：使用G*Power分析程序计算研究样本，这项研究招募了15名健康男性，他们对腓肠肌内侧进行了5分钟的HFP按摩。剪切波弹性成像用于测量深筋膜的组织硬度，肌肉，HFP按摩前后，通过剪切波速度以及志愿者踝关节背屈的ROM和深层肌间筋膜。P<.05的值用于说明统计学意义，和事后使用G*Power计算效应大小。
结果：HFP按摩5分钟后，剪切波速度显示深筋膜有明显变化（P=.003；剪切波速度：-0.7m/s），踝关节背屈ROM明显增加（P=.002；ROM增加：3.0°）。然而,肌肉和深层肌间筋膜没有任何明显变化。
结论：HFP按摩5分钟可改善深筋膜的刚度，同时改善踝关节背屈ROM。该方法可以用作干预措施，以降低深筋膜的刚度并有效地增加ROM。
