Quality of sleep in pregnant woman with low back pain

Introduction Pregnancy is characterized by several changes in her body. These changes contribute to the emergence of low back pain, which may influence the quality of sleep during pregnancy. Objective To compare the quality of sleep among pregnant women with and without low back pain during pregnancy, examining the relationship between two variables. Materials methods Thirty volunteers aged between 19 and 36 years, divided into control group (CG – n = 16) and Study Group (SG – n = 14), residents in the cities of Natal, were evaluated in the second trimester of pregnancy. To sleep evaluation were used to index the Pittsburgh Sleep Quality and the Epworth Sleepiness Scale. Low back pain was evaluated using the pressure algometer, Visual Analogue Scale (VAS) and Oswestry Disability Index. Statistical analysis used the Shapiro Wilk test, Student’s T test for independent samples and Pearson correlation test. Results The mean gestational and chronological ages were 28.2 ± 3.4 years and 19.9 ± 3.7 weeks, respectively. Sleep quality was lower in SG (8.21 ± 4.8) when compared to CG (5.94 ± 1.7) and was statistically significant (P = 0.021). Analyzing the relationship between sleep quality and pain intensity, it was observed that the variables have a positive correlation between them (r = 0.372, P = 0.043). Conclusion Our findings indicate that sleep quality is decreased in women with low back pain compared to those without pain.

引言
妊娠以机体发生一系列生理变化为特征，此类变化可诱发腰痛，进而对妊娠期睡眠质量产生不良影响。
研究目的
对比伴与不伴妊娠期腰痛的孕妇的睡眠质量，并探讨二者之间的关联。
材料与方法
本研究招募30名年龄介于19~36岁的纳塔尔市居民孕妇，于妊娠中期开展评估，按分组分为对照组（CG，n=16）与研究组（SG，n=14）。睡眠质量评估采用匹兹堡睡眠质量指数（Pittsburgh Sleep Quality）与爱泼沃斯嗜睡量表（Epworth Sleepiness Scale）；腰痛程度评估则采用压力测痛仪、视觉模拟评分法（Visual Analogue Scale, VAS）与Oswestry功能障碍指数（Oswestry Disability Index）。统计学分析采用Shapiro-Wilk检验、独立样本t检验与Pearson相关检验。
结果
研究对象的平均妊娠周数与实际年龄分别为19.9±3.7周与28.2±3.4岁。研究组睡眠质量评分（8.21±4.8）显著低于对照组（5.94±1.7），差异具有统计学意义（P=0.021）。对睡眠质量与疼痛强度的关联分析显示，二者呈正相关（r=0.372，P=0.043）。
结论
本研究结果表明，伴腰痛的妊娠期女性睡眠质量较无腰痛者显著下降。