臨床上雖有相當比例的待產婦受下背痛之苦，卻僅有少數的西方文獻探討這個問題。因此本研究的目的為：(1)描述待產時下背痛的特徵，包括發生率、部位、類型、型態、強度變化趨勢、有效措施及使其惡化的因素，(2)確認影響待產時下背痛之相關因素。採前瞻、相關性重覆量測設計，於中部某醫學中心產房進行研究，共收集93位低危險性產婦的資料。於潛伏期（子宮頸口開2-4公分）、活動期早期（子宮頸口開5-7公分）、以及活動期晚期（子宮頸口開8-10公分）重覆測量下背痛的強度。所收集之資料以描述性統計、重覆量測ANOVA，以及邏輯式迴歸加以分析。結果顯示，有高達75.3%的研究對象待產過程有下背痛，疼痛於不同階段的平均值介於36.66-76.20之間。下背痛的強度隨著產程進展而加重，疼痛部位也隨時間改變。有54.29%的待產婦下背痛的類型為酸痛，45.71%的產婦屬持續性疼痛，65.3%的待產婦認為按摩是最能減輕下背痛的方法。懷孕期間有下背痛(OR=3.23; p<.01)及入院時體重較重(OR=1.13; p=.02)的婦女，於待產時亦較容易發生下背痛。依據本研究的結果，待產時下背痛的強度易隨產程進展而加劇，因此及早預防是有必要的，尤其是孕期有下背痛及入院時體重較重的產婦。

A substantial proportion of women in labor suffer from low back pain, yet this issue has only been specifically evaluated in a few Western studies. The purpose of this research was to (1) describe the following characteristics of low back pain during labor: prevalence, anatomic region(s) affected, type, pattern, intensity trend, effective interventions, and exacerbating factors; (2) identify the factors relating to intrapartum low back pain in Taiwan women. Acorrelational design with repeated measures was used to conduct this investigation. Ninety-three low-risk women in labor were recruited from a medical center in central Taiwan. Low back pain was repeatedly measured during the latent phase (cervix dilated 2-4 cm), early active phase (cervix dilated 5-7 cm), and late active phase (cervix dilated 8-10 cm) of labor. Data were analyzed using descriptive statistics, repeated measurement ANOVA, and logistic regression. The results showed as many as 75.3% of the participants suffered episodes of low back pain during labor. The mean pain scores were 36.66-76.20 in the various stages of labor. Pain intensified as labor progressed. The location of the pain also changed with the progression of labor. The type of low back pain in 54.29% of women in labor was "muscle soreness and pain"; The pattern of pain in 45.71% women was continuous. Massage was chosen as the most effective intervention to alleviate low back pain by 65.3% of women. The women in labor who suffered from low back pain during pregnancy (OR=3.23; p<.01) and had greater body weight when hospitalized (OR=1.13; p=.02) were most likely to be in the low back pain group. In conclusion, our study demonstrates low back pain intensified with the progression of labor, suggesting early prevention is necessary, especially in the case of women who had low back pain during pregnancy and heavier body weight when hospitalized.