Influence of unstable shoes on women with lumbopelvic postpartum pain: randomized clinical trial

ABSTRACT BACKGROUND: Back pain is a normal symptom during pregnancy and is expected to become worse beyond the first three months after childbirth. OBJECTIVES: To determine the effectiveness of wearing unstable shoes instead of conventional shoes, regarding pain intensity, low back mobility and stability, among women with lumbopelvic pain (LPP) during the postpartum period. DESIGN AND SETTING: Prospective, single-blinded, randomized clinical trial conducted at a podiatry and physiotherapy clinical center. METHODS: A nine-week program of wearing either unstable shoes (A) or conventional shoes (B) was implemented. The following outcomes were measured in three assessments: pain intensity, using a visual analogue scale (VAS); low-back mobility, using a modified Schober test; and stability, using a pressure platform. RESULTS: The lateral stability speed, anterior stability speed and anterior center of pressure (COP) showed significant (P研究背景：腰痛是妊娠期常见症状，且预计在产后三个月后症状会进一步加重。 研究目的：旨在探究产后腰骶盆疼痛（lumbopelvic pain, LPP）女性穿戴不稳定型鞋具替代常规鞋具时，在疼痛强度、腰椎活动度与稳定性方面的干预效果。 研究设计与实施地点：本研究为前瞻性单盲随机临床试验，开展于足病与物理治疗临床中心。 研究方法：实施为期9周的分组干预方案，受试者分别穿戴不稳定型鞋具（A组）或常规鞋具（B组）。在三次评估中测量以下结局指标：采用视觉模拟评分法（visual analogue scale, VAS）评估疼痛强度；采用改良Schober试验评估腰椎活动度；采用压力平台评估躯干稳定性。 研究结果：侧方稳定速度、前方稳定速度及前方压力中心（center of pressure, COP）显示出显著（P