Tampa Bay Devil Rays, Tampa Bay, FL.
J Athl Train. 1998 Oct;33(4):341-6.
We investigated the effects of pulsed ultrasound on swelling, muscle soreness perception, relaxed-elbow extension angle, and muscular strength.
Eight sets of concentric and eccentric actions induced delayed-onset muscle soreness of the elbow flexors. Group 1 received 20% pulsed ultrasound treatments (1-MHz, 7 minutes, 1.5 W/ cm(2) temporal peak intensity) twice a day immediately after postexercise assessments and at 3, 24, 27, 48, 51, 72, and 75 hours postexercise. Group 2 received sham treatments immediately after postexercise assessments and at 3,27, 51, and 75 hours postexercise and true treatments of pulsed ultrasound at 24, 48, and 72 hours postexercise. Group 3 received sham treatments of no ultrasonic output immediately after postexercise assessments and at 3, 24, 27, 48, 51, 72, and 75 hours postexercise.
Thirty-six college-age females.
We recorded upper-arm circumference, perceived soreness, relaxed-elbow extension angle, and elbow-flexion strength before (pretest), immediately postexercise, and at 24, 48, 72, and 96 hours postexercise.
We noted differences over time but no treatment effect between groups or interactions between time and group for upper-arm circumference, perceived soreness, relaxed-elbow extension angle, or elbow-flexion strength.
Pulsed ultrasound as used in this study did not significantly diminish the effects of delayed-onset muscle soreness on soreness perception, swelling, relaxed-elbow extension angle, and strength.
研究脉冲超声波对肿胀、肌肉酸痛感、放松时肘部伸展角度和肌肉力量的影响。
8 组同心和偏心运动导致肘部屈肌延迟性肌肉酸痛。第 1 组在运动后评估后和运动后 3、24、27、48、51、72 和 75 小时，每天接受 20%脉冲超声治疗（1MHz，7 分钟，1.5W/cm² 时峰值强度）2 次。第 2 组在运动后评估后和运动后 3、27、51 和 75 小时接受假治疗，在运动后 24、48 和 72 小时接受脉冲超声真治疗。第 3 组在运动后评估后和运动后 3、24、27、48、51、72 和 75 小时立即接受无超声输出的假治疗。
36 名大学年龄的女性。
我们在运动前（预测试）、运动后即刻以及运动后 24、48、72 和 96 小时记录上臂周长、酸痛感、放松时肘部伸展角度和肘部弯曲力量。
我们注意到随着时间的推移有差异，但组间无治疗效果差异或时间和组间无交互作用差异，以上臂周长、酸痛感、放松时肘部伸展角度或肘部弯曲力量均如此。
在本研究中使用的脉冲超声并未显著减轻延迟性肌肉酸痛对酸痛感、肿胀、放松时肘部伸展角度和力量的影响。
