{"title":"视觉输入对老年慢性腰痛患者单腿站立时对侧足触和姿势稳定性的影响。","authors":"Paul Sung, Dongchul Lee","doi":"10.1007/s00586-025-09083-6","DOIUrl":null,"url":null,"abstract":"<p><strong>Background: </strong>Compensatory weight transfer is essential for balance control and functional mobility, yet few studies have investigated contralateral touch behavior during one-leg standing, particularly in individuals with chronic low back pain (LBP).</p><p><strong>Purpose: </strong>This study evaluated the influence of visual input on postural stability, with specific attention to the initiation and total duration of contralateral foot touches across three repeated trials in adults with LBP.</p><p><strong>Methods: </strong>Twenty-seven participants with LBP and 44 control participants performed 10-second one-leg standing tasks on their non-dominant limb under eyes-open and eyes-closed conditions. Two primary outcomes were assessed across three trials: (1) occurrence of contralateral foot touch within the first second (early stance response), and (2) total duration of foot contact during the entire trial.</p><p><strong>Results: </strong>Sample size estimation indicated that a minimum of 25 participants per group would yield 80% power to detect a moderate effect size (Cohen's d = 0.4). A significant interaction was observed between visual condition and repetition (F = 7.86, p = 0.01), although no significant group interaction was found for total contralateral touch duration (F = 1.59, p = 0.21). The LBP group exhibited significantly more early contralateral touches during the first trial with visual input (t = 3.46, p = 0.001) and during the third trial without visual input (t = -3.53, p = 0.001), suggesting impaired adaptability to sensory conditions.</p><p><strong>Conclusion: </strong>Although total contralateral touch duration did not differ significantly between groups, individuals with LBP demonstrated greater instability during the initial phase of one-leg stance. These findings highlight early stance responses as a sensitive marker of balance impairment in LBP and support the need for interventions that enhance somatosensory integration and postural initiation strategies.</p>","PeriodicalId":12323,"journal":{"name":"European Spine Journal","volume":" ","pages":""},"PeriodicalIF":2.6000,"publicationDate":"2025-06-26","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":"0","resultStr":"{\"title\":\"Effects of visual input on contralateral foot touch and postural stability during one-leg standing in older adults with chronic low back pain.\",\"authors\":\"Paul Sung, Dongchul Lee\",\"doi\":\"10.1007/s00586-025-09083-6\",\"DOIUrl\":null,\"url\":null,\"abstract\":\"<p><strong>Background: </strong>Compensatory weight transfer is essential for balance control and functional mobility, yet few studies have investigated contralateral touch behavior during one-leg standing, particularly in individuals with chronic low back pain (LBP).</p><p><strong>Purpose: </strong>This study evaluated the influence of visual input on postural stability, with specific attention to the initiation and total duration of contralateral foot touches across three repeated trials in adults with LBP.</p><p><strong>Methods: </strong>Twenty-seven participants with LBP and 44 control participants performed 10-second one-leg standing tasks on their non-dominant limb under eyes-open and eyes-closed conditions. Two primary outcomes were assessed across three trials: (1) occurrence of contralateral foot touch within the first second (early stance response), and (2) total duration of foot contact during the entire trial.</p><p><strong>Results: </strong>Sample size estimation indicated that a minimum of 25 participants per group would yield 80% power to detect a moderate effect size (Cohen's d = 0.4). A significant interaction was observed between visual condition and repetition (F = 7.86, p = 0.01), although no significant group interaction was found for total contralateral touch duration (F = 1.59, p = 0.21). The LBP group exhibited significantly more early contralateral touches during the first trial with visual input (t = 3.46, p = 0.001) and during the third trial without visual input (t = -3.53, p = 0.001), suggesting impaired adaptability to sensory conditions.</p><p><strong>Conclusion: </strong>Although total contralateral touch duration did not differ significantly between groups, individuals with LBP demonstrated greater instability during the initial phase of one-leg stance. These findings highlight early stance responses as a sensitive marker of balance impairment in LBP and support the need for interventions that enhance somatosensory integration and postural initiation strategies.</p>\",\"PeriodicalId\":12323,\"journal\":{\"name\":\"European Spine Journal\",\"volume\":\" \",\"pages\":\"\"},\"PeriodicalIF\":2.6000,\"publicationDate\":\"2025-06-26\",\"publicationTypes\":\"Journal Article\",\"fieldsOfStudy\":null,\"isOpenAccess\":false,\"openAccessPdf\":\"\",\"citationCount\":\"0\",\"resultStr\":null,\"platform\":\"Semanticscholar\",\"paperid\":null,\"PeriodicalName\":\"European Spine Journal\",\"FirstCategoryId\":\"3\",\"ListUrlMain\":\"https://doi.org/10.1007/s00586-025-09083-6\",\"RegionNum\":3,\"RegionCategory\":\"医学\",\"ArticlePicture\":[],\"TitleCN\":null,\"AbstractTextCN\":null,\"PMCID\":null,\"EPubDate\":\"\",\"PubModel\":\"\",\"JCR\":\"Q2\",\"JCRName\":\"CLINICAL NEUROLOGY\",\"Score\":null,\"Total\":0}","platform":"Semanticscholar","paperid":null,"PeriodicalName":"European Spine Journal","FirstCategoryId":"3","ListUrlMain":"https://doi.org/10.1007/s00586-025-09083-6","RegionNum":3,"RegionCategory":"医学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":null,"EPubDate":"","PubModel":"","JCR":"Q2","JCRName":"CLINICAL NEUROLOGY","Score":null,"Total":0}
引用次数: 0
摘要
背景：代偿性体重转移对平衡控制和功能活动至关重要，但很少有研究调查单腿站立时的对侧触摸行为，特别是慢性腰痛（LBP）患者。目的：本研究评估了视觉输入对体位稳定性的影响，特别关注了对侧足触碰的开始和总持续时间。方法：27名LBP患者和44名对照组在睁眼和闭眼条件下，用非优势肢完成10秒单腿站立任务。三个试验评估了两个主要结果：(1)第一秒内对侧足部接触的发生（早期站立反应），(2)整个试验中足部接触的总持续时间。结果：样本量估计表明，每组至少25名参与者将产生80%的能力来检测中等效应大小（科恩d = 0.4）。观察到视觉条件和重复之间存在显著的交互作用（F = 7.86, p = 0.01），但对侧总触摸时间没有发现显著的组间交互作用（F = 1.59, p = 0.21）。LBP组在有视觉输入的第一次试验（t = 3.46, p = 0.001）和没有视觉输入的第三次试验（t = -3.53, p = 0.001）中表现出明显更多的早期对侧触摸，表明对感觉条件的适应性受损。结论：尽管两组之间的对侧触摸时间没有显著差异，但LBP患者在单腿站立的初始阶段表现出更大的不稳定性。这些发现强调了早期姿势反应是腰痛平衡障碍的敏感标志，并支持了加强体感整合和姿势启动策略干预的必要性。
Effects of visual input on contralateral foot touch and postural stability during one-leg standing in older adults with chronic low back pain.
Background: Compensatory weight transfer is essential for balance control and functional mobility, yet few studies have investigated contralateral touch behavior during one-leg standing, particularly in individuals with chronic low back pain (LBP).
Purpose: This study evaluated the influence of visual input on postural stability, with specific attention to the initiation and total duration of contralateral foot touches across three repeated trials in adults with LBP.
Methods: Twenty-seven participants with LBP and 44 control participants performed 10-second one-leg standing tasks on their non-dominant limb under eyes-open and eyes-closed conditions. Two primary outcomes were assessed across three trials: (1) occurrence of contralateral foot touch within the first second (early stance response), and (2) total duration of foot contact during the entire trial.
Results: Sample size estimation indicated that a minimum of 25 participants per group would yield 80% power to detect a moderate effect size (Cohen's d = 0.4). A significant interaction was observed between visual condition and repetition (F = 7.86, p = 0.01), although no significant group interaction was found for total contralateral touch duration (F = 1.59, p = 0.21). The LBP group exhibited significantly more early contralateral touches during the first trial with visual input (t = 3.46, p = 0.001) and during the third trial without visual input (t = -3.53, p = 0.001), suggesting impaired adaptability to sensory conditions.
Conclusion: Although total contralateral touch duration did not differ significantly between groups, individuals with LBP demonstrated greater instability during the initial phase of one-leg stance. These findings highlight early stance responses as a sensitive marker of balance impairment in LBP and support the need for interventions that enhance somatosensory integration and postural initiation strategies.
期刊介绍：
"European Spine Journal" is a publication founded in response to the increasing trend toward specialization in spinal surgery and spinal pathology in general. The Journal is devoted to all spine related disciplines, including functional and surgical anatomy of the spine, biomechanics and pathophysiology, diagnostic procedures, and neurology, surgery and outcomes. The aim of "European Spine Journal" is to support the further development of highly innovative spine treatments including but not restricted to surgery and to provide an integrated and balanced view of diagnostic, research and treatment procedures as well as outcomes that will enhance effective collaboration among specialists worldwide. The “European Spine Journal” also participates in education by means of videos, interactive meetings and the endorsement of educative efforts.
Official publication of EUROSPINE, The Spine Society of Europe
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