Effect of Swedish massage on electromyography and muscle strength of Quadriceps muscles in patients with Knee Osteoarthritis
Oral Presentation XML
1Student/ Shahid Bahona university
2studen/Shahid Bahonar university of kerman
3Master/Shahid Bahonar university of Kerman
4Assistant Professor of Sport Injuries and Corrective Exercises, Department of Sports Injuries and Corrective Exercises, Faculty of Sports Sciences, Shahid Bahonar University of Kerman, Kerman, Iran
Introduction: Knee osteoarthritis (OA) is a multi-factor, progressive disease that leads to pain, disability and dependence. A longitudinal study showed that the weakness of the quadriceps muscle increases the risk of developing radiographic (asymptomatic) knee osteoarthritis in women, and it believes that those with knee osteoarthritis, have weaker quadriceps muscle compared with healthy people, especially when there are signs of osteoarthritis. Massage as a method of physiotherapy can relieve the symptoms of the disease. But studies have shown that this method is not commonly used for knee osteoarthritis treatment. Also there are few studies that have examined the effect of massage on knee OA. So the purpose of this study was to investigate the effect of Swedish massage on electromyography and muscle strength of Quadriceps muscles in patients with knee osteoarthritis.
Methodology: Thirty women patients with knee osteoarthritis participated in this study (52.6 ±7.3 years old, height 1.57 ±0.05 m, weight 74.40 ±9.6 kg). And randomly divided into 2 same control and intervention (Swedish massage) groups (n=15 each group). The environmental condition for both groups during performance was similar. Then the intervention group received Swedish massage on their Quadriceps for 20 minutes per sessions (12 sessions), up to 4 weeks. During this period, the control group did not receive any treatment. Pain and function were assessed with the WOMAC Index. The activity of Vastus lateralis, Vastus medialis oblique and biceps femoris muscles were analyzed using surface EMG and normalized to a maximal voluntary isometric contraction (MVIC), and Muscle strength of Quadriceps muscles was measured by manual dynamometer. Statistical analysis were performed using SPSS version 22 (P>0.05).
Results: Patients demonstrated a significantly reduced pain and improved function in compare with control group. And also there was a significant difference in the muscle activity and muscle strength of the quadriceps before and after the intervention.
Discussion: According to the findings of this study, it can be concluded that Swedish massage can improve muscle strength as well as muscle activity of Quadriceps in patients with knee osteoarthritis. Also it can be considered that, Swedish massage has had a positive effect on pain relief and function improvement. Along with other common methods of rehabilitation therefore, it is recommended to use this intervention in order to improve strength, muscle activity and symptoms in patients with knee OA.