PDF(Pubmed)
Abstract：
BACKGROUND: Recent clinical studies confirmed that whole-body electromyostimulation (WB-EMS) training is a safe and time-efficient therapeutic method for patients with nonspecific chronic back pain (NSCBP). However, significant variations in initial pain intensity among subjects in these studies have been observed. This study aims to determine if patients with differing initial pain intensities experience varying degrees of benefit from WB-EMS and to assess the overall correlation between initial pain levels and pain reduction.
METHODS: Pain intensity datasets from two studies were combined. The pooled data included 121 NSCBP patients (38 males and 83 females) with an average age of 55.1 years (±11.8 years). Data was categorized by baseline pain intensity on the numeric rating scale (NRS) into seven groups: 0 to 2, >2 to 3, >3 to 4, >4 to 5, >5 to 6, >6 to 7, and >7. Both absolute and relative changes were analyzed. Additionally, a Spearman rho correlation test was performed on the entire dataset to evaluate the relationship between initial pain level and pain reduction.
RESULTS: Significant improvements were noted across all NRS11 categories, with strong effect sizes (p) in all classes above 2, ranging from 0.56 to 0.90. The >7 category exhibited the highest rate of clinically significant changes (80%) and an average improvement of 3.72 points. The overall group from >1 to 10 showed an average improvement of 1.33 points, with 37% of the participants experiencing clinically significant improvements. The Spearman rho correlation test revealed a moderate positive relationship between initial pain level and pain reduction (r_s = 0.531, p < 0.001), indicating that, generally, higher initial pain levels are associated with greater pain reduction.
CONCLUSIONS: The findings support the hypothesis that NSCBP patients with higher baseline NRS values benefit more substantially from WB-EMS. Those with NRS values above 7 show the greatest improvement and highest rate of clinical significance. The overall positive correlation between initial pain intensity and pain reduction further underscores the efficacy of WB-EMS in managing NSCBP across different pain intensities.
METHODS: Pain intensity datasets from two studies were combined. The pooled data included 121 NSCBP patients (38 males and 83 females) with an average age of 55.1 years (±11.8 years). Data was categorized by baseline pain intensity on the numeric rating scale (NRS) into seven groups: 0 to 2, >2 to 3, >3 to 4, >4 to 5, >5 to 6, >6 to 7, and >7. Both absolute and relative changes were analyzed. Additionally, a Spearman rho correlation test was performed on the entire dataset to evaluate the relationship between initial pain level and pain reduction.
RESULTS: Significant improvements were noted across all NRS11 categories, with strong effect sizes (p) in all classes above 2, ranging from 0.56 to 0.90. The >7 category exhibited the highest rate of clinically significant changes (80%) and an average improvement of 3.72 points. The overall group from >1 to 10 showed an average improvement of 1.33 points, with 37% of the participants experiencing clinically significant improvements. The Spearman rho correlation test revealed a moderate positive relationship between initial pain level and pain reduction (r_s = 0.531, p < 0.001), indicating that, generally, higher initial pain levels are associated with greater pain reduction.
CONCLUSIONS: The findings support the hypothesis that NSCBP patients with higher baseline NRS values benefit more substantially from WB-EMS. Those with NRS values above 7 show the greatest improvement and highest rate of clinical significance. The overall positive correlation between initial pain intensity and pain reduction further underscores the efficacy of WB-EMS in managing NSCBP across different pain intensities.
摘要：
背景：最近的临床研究证实，对于非特异性慢性背痛（NSCBP）患者，全身肌电刺激（WB-EMS）训练是一种安全且省时的治疗方法。然而,在这些研究中观察到受试者的初始疼痛强度存在显著差异.本研究旨在确定初始疼痛强度不同的患者是否从WB-EMS中获得不同程度的益处，并评估初始疼痛水平与疼痛减轻之间的总体相关性。
方法：合并两项研究的疼痛强度数据集。汇总数据包括121名NSCBP患者（38名男性和83名女性），平均年龄为55.1岁（±11.8岁）。根据数字评定量表（NRS）的基线疼痛强度将数据分为七个组：0至2，>2至3，>3至4，>4至5，>5至6，>6至7和>7。分析了绝对和相对变化。此外,a对整个数据集进行Spearmanrho相关性检验,以评估初始疼痛水平与疼痛减轻之间的关系.
结果：在所有NRS11类别中都注意到了显着改善，在所有高于2的类别中具有强效应大小(P)，范围从0.56到0.90。>7类别表现出最高的临床显着变化率（80％）和平均改善3.72分。从>1到10的整体组显示平均改善1.33分,37%的参与者经历了临床上显著的改善。Spearmanrho相关性检验显示初始疼痛水平与疼痛减轻之间存在中度正相关关系（r_s=0.531，p<0.001），表明,一般来说,较高的初始疼痛水平与更大的疼痛减轻相关。
结论：研究结果支持NRS基线值较高的NSCBP患者从WB-EMS中获益更多的假设。NRS值高于7的那些显示出最大的改善和最高的临床意义率。初始疼痛强度和疼痛减轻之间的总体正相关进一步强调了WB-EMS在不同疼痛强度下管理NSCBP的功效。
方法：合并两项研究的疼痛强度数据集。汇总数据包括121名NSCBP患者（38名男性和83名女性），平均年龄为55.1岁（±11.8岁）。根据数字评定量表（NRS）的基线疼痛强度将数据分为七个组：0至2，>2至3，>3至4，>4至5，>5至6，>6至7和>7。分析了绝对和相对变化。此外,a对整个数据集进行Spearmanrho相关性检验,以评估初始疼痛水平与疼痛减轻之间的关系.
结果：在所有NRS11类别中都注意到了显着改善，在所有高于2的类别中具有强效应大小(P)，范围从0.56到0.90。>7类别表现出最高的临床显着变化率（80％）和平均改善3.72分。从>1到10的整体组显示平均改善1.33分,37%的参与者经历了临床上显著的改善。Spearmanrho相关性检验显示初始疼痛水平与疼痛减轻之间存在中度正相关关系（r_s=0.531，p<0.001），表明,一般来说,较高的初始疼痛水平与更大的疼痛减轻相关。
结论：研究结果支持NRS基线值较高的NSCBP患者从WB-EMS中获益更多的假设。NRS值高于7的那些显示出最大的改善和最高的临床意义率。初始疼痛强度和疼痛减轻之间的总体正相关进一步强调了WB-EMS在不同疼痛强度下管理NSCBP的功效。
