مقايسۀ تأثير ارتعاش‌درماني و آرام‌سازي عضلاني بر كمردرد پرستاران

Comparing the Effect of Vibration Therapy and that of Muscle Relaxation on Nurses with Low Back Pain

مقدمه: كمردرد يكي از مشكلات شايع ناشي از اختلالات عضلاني – اسكلتي در پرستاران است. هدف اين مطالعه تعيين تأثير ارتعاش‌درماني و آرام‌سازي عضلاني بر كمردرد پرستاران است. مواد و روش‌ها: در اين كارآزمايي باليني، 110 پرستار مبتلا به كمردرد به روش نمونه‌گيري آسان انتخاب و به‌صورت تصادفي به دو گروه آزمون يك و دو تقسيم شدند. ابزارهاي پژوهش شامل فرم رضايت‌نامۀ كتبي، فرم اطلاعات دموگرافيك، ابزار سنجش درد عددي و فرم ثبت درد بود. گروه اول، به مدت 2 هفته روزانه 1 بار هر بار 10 دقيقه تحت ارتعاش‌درماني قرار گرفتند. گروه دوم، 2 هفته روزانه يك‌بار هر بار 20 دقيقه آرام‌سازي عضلاني را انجام دادند. ميزان درد قبل و بعد از مداخله در دو گروه سنجيده شد. داده‌ها با آمار توصيفي و استنباطي در نرم‌افزار SPSS نسخۀ 20 تجزيه‌وتحليل شد. سطح معني‌داري %5= αدر نظر گرفته شد. يافته‌ها:دو گروه ازنظر اطلاعات دموگرافيك، همسان بودند (%5

Introduction: Lower back pain is a common musculoskeletal disorder in nurses. Therefore, this study aimed to compare the effect of vibration therapy and that of muscle relaxation methods on nurses with low back pain. Methods: In this clinical trial, 110 nurses with low back pain were randomly assigned to two intervention groups (group I and group II). The research instrument were written consent form, demographic questionnare, numeric pain rating scale and pain assessment flowsheet. In group I, the nurses received vibration therapy once a day for 10 minutes for two weeks. In the group II, the nurses performed muscle relaxation once a day for 20 minutes for two weeks. Then, pain rate was measured before and after the intervention in both groups. The data were analyzed by SPSS 20 and α =0.05 was considered significant. Results: There were no significant difference between the two groups in terms of demographic information (p>0.05). Before the intervention, there was no significant difference between the the groups in terms of average low back pain (P = 0.0814). After the intervention, both groups experienced a statistically significant decrease in pain compared to that before intervention (p≤0.001). The nurses’ low back pain in the muscle relaxation group decreased from 5.8 to 4.25 and from 5.9 to 3.1 in the vibration therapy group. There was a significant difference between the groups in terms of the average pain severity after the intervention (p=0.044) so that the pain reduction rate in the vibration therapy group was higher than that in the muscle relaxation group. Conclusion: The results showed that vibration therapy and muscle relaxation reduced the nurses’ low back pain. In other words, both methods were effective. However, vibration therapy was more effective.