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Medicina dello Sport 2020 December;73(4):661-72

DOI: 10.23736/S0025-7826.20.03685-6

Copyright © 2020 EDIZIONI MINERVA MEDICA

language: English, Italian

Effect of extracorporeal shock wave therapy on pain and forearm rotating muscle strength in patients with tennis elbow

Liang CHENG 1, 2, Yunfei JIANG 2

1 Chengdu Sport University, Chengdu, China; 2 Sichuan Sport University, Chengdu, China


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BACKGROUND: The aim of this study was to determine the therapeutic effect of extracorporeal shock wave therapy with rehabilitation training on tennis elbow and analyze the changes in pain and forearm muscle strength at different angular velocities.
METHODS: Patients with tennis elbow with a >6-month history of pain were randomly divided into an experimental group (N.=14, male/female: 10/4) and control group (N.=15, male/female: 10/5). The experimental group was treated with extracorporeal shock wave therapy for 8 weeks. The experimental and control groups underwent the same physical therapy and rehabilitation training regimens. Physical therapy was performed with a Chattanooga 2776 mobile ultrasound therapy device. Rehabilitation training included forearm pronation and supination exercises. The Visual Analog Scale (VAS) pain score and changes in forearm pronation and supination isokinetic muscle strength at different angular velocities (60°/s and 180°/s) were measured before and after treatment.
RESULTS: After 8 weeks, the VAS Score in the experimental group decreased by 70.1% (P<0.001), the forearm 60°/s pronation peak torque increased by 13.2%, and the pronation muscle group endurance increased by 11.5% (P<0.001). The VAS Score in the control group decreased by 33.8% (P<0.001). After 8 weeks, the VAS Score in the experimental group was lower than that in the control group by 54.9% (P<0.001), and the forearm 60°/s pronation peak torque and pronator muscle endurance in the experimental group were higher than those in the control group by 12.3% and 16.0%, respectively (P<0.05).
CONCLUSIONS: Eight weeks of extracorporeal shock wave therapy with ultrasound and rehabilitation training in patients with tennis elbow can reduce pain, improve the peak torque of the forearm pronator muscle group at 60°/s and improve endurance of the pronator muscle group.


KEY WORDS: Tennis elbow; Extracorporeal shock wave therapy; Muscle strength; Pain

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