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Abstract：
BACKGROUND: The center of pressure (COP) excursion parameters are recognized as risk factors for the etiology and development of patellofemoral pain (PFP). The purpose of the present study measures the effect of pain exacerbation on COP excursion, and the correlation between pain intensity and COP excursion in women with PFP during single leg squat (SLS).
METHODS: Sixty patients with PFP participated in this cross-sectional study. The outcome measures were included pain intensity and COP excursion which evaluated in pre and post pain exacerbation during SLS. The COP parameters were evaluated during single leg squat in 60° of knee flexion. A paired t-test and MANOVA was used to compare pain intensity and COP excursion between the two conditions, respectively. Furthermore, A Pearson\'s correlation matrix was used to examine the relationship between pain intensity with COP excursion.
RESULTS: Statistical analysis showed that pain intensity (t = - 16.655, p < 0.001) and COP excursion (Wilks\' Lambda = 0.225, p < 0.001) with medium effect size increased after PFJ loading. In addition, an excellent positive correlation was observed between increased in pain intensity and COP excursion (P < 0.001, r > 0.80).
CONCLUSIONS: After PFJ loading, women with PFP presented increases in the pain intensity, COP excursions, and sway velocity. In addition, there was an association between the increase in pain intensity and COP excursions. Clinicians aiming to improve postural control of patients with PFP could use kinesio taping as a short-term intervention and balance training to improvements in postural control at medium and long-term. Furthermore, emphasizing psychological factors to reducing kinesiophobia can be useful to restoring proper movement pattern, reducing pain and improving symptoms.
METHODS: Sixty patients with PFP participated in this cross-sectional study. The outcome measures were included pain intensity and COP excursion which evaluated in pre and post pain exacerbation during SLS. The COP parameters were evaluated during single leg squat in 60° of knee flexion. A paired t-test and MANOVA was used to compare pain intensity and COP excursion between the two conditions, respectively. Furthermore, A Pearson\'s correlation matrix was used to examine the relationship between pain intensity with COP excursion.
RESULTS: Statistical analysis showed that pain intensity (t = - 16.655, p < 0.001) and COP excursion (Wilks\' Lambda = 0.225, p < 0.001) with medium effect size increased after PFJ loading. In addition, an excellent positive correlation was observed between increased in pain intensity and COP excursion (P < 0.001, r > 0.80).
CONCLUSIONS: After PFJ loading, women with PFP presented increases in the pain intensity, COP excursions, and sway velocity. In addition, there was an association between the increase in pain intensity and COP excursions. Clinicians aiming to improve postural control of patients with PFP could use kinesio taping as a short-term intervention and balance training to improvements in postural control at medium and long-term. Furthermore, emphasizing psychological factors to reducing kinesiophobia can be useful to restoring proper movement pattern, reducing pain and improving symptoms.
摘要：
背景：压力中心（COP）偏移参数被认为是髌股疼痛（PFP）病因和发展的危险因素。本研究的目的是测量疼痛加重对COP偏移的影响，以及单腿下蹲（SLS）期间PFP女性的疼痛强度与COP偏移之间的相关性。
方法：60例PFP患者参与了这项横断面研究。结果测量包括疼痛强度和COP偏移，在SLS期间疼痛加重前后进行评估。在膝关节屈曲60°的单腿下蹲期间评估了COP参数。配对t检验和MANOVA用于比较两种情况之间的疼痛强度和COP偏移。分别。此外，使用Pearson相关矩阵检查疼痛强度与COP偏移之间的关系。
结果：统计分析表明，具有中等效应大小的疼痛强度（t=-16.655，p<0.001）和COP偏移（Wilks\'Lambda=0.225，p<0.001）在PFJ加载后增加。此外,观察到疼痛强度增加与COP偏移之间呈极显著正相关(P<0.001,r>0.80)。
结论：PFJ加载后，PFP女性的疼痛强度增加，COP短途旅行,和摇摆速度。此外,疼痛强度的增加与COP偏移之间存在关联.旨在改善PFP患者姿势控制的临床医生可以使用运动录音作为短期干预和平衡训练，以改善中长期的姿势控制。此外，强调心理因素以减少运动障碍可能有助于恢复适当的运动模式，减轻疼痛，改善症状。
方法：60例PFP患者参与了这项横断面研究。结果测量包括疼痛强度和COP偏移，在SLS期间疼痛加重前后进行评估。在膝关节屈曲60°的单腿下蹲期间评估了COP参数。配对t检验和MANOVA用于比较两种情况之间的疼痛强度和COP偏移。分别。此外，使用Pearson相关矩阵检查疼痛强度与COP偏移之间的关系。
结果：统计分析表明，具有中等效应大小的疼痛强度（t=-16.655，p<0.001）和COP偏移（Wilks\'Lambda=0.225，p<0.001）在PFJ加载后增加。此外,观察到疼痛强度增加与COP偏移之间呈极显著正相关(P<0.001,r>0.80)。
结论：PFJ加载后，PFP女性的疼痛强度增加，COP短途旅行,和摇摆速度。此外,疼痛强度的增加与COP偏移之间存在关联.旨在改善PFP患者姿势控制的临床医生可以使用运动录音作为短期干预和平衡训练，以改善中长期的姿势控制。此外，强调心理因素以减少运动障碍可能有助于恢复适当的运动模式，减轻疼痛，改善症状。
