Department of Kinesiology, University of Connecticut, Storrs, CT, USA.
Institute for Sports Medicine, University of Connecticut, Storrs, CT, USA.
J Sport Rehabil. 2024 Jul 19;33(6):461-466. doi: 10.1123/jsr.2023-0427. Print 2024 Aug 1.
Patellofemoral pain (PFP) is a prevalent chronic condition characterized by retropatellar or peripatellar pain exacerbated by various knee flexion-based activities. Previous research has highlighted the impact of psychological constructs on pain and function in chronic musculoskeletal pain conditions, yet their influence on physical activity in PFP cohorts remains unexplored. We aimed to evaluate whether pain self-efficacy and pain catastrophizing predict variations in steps per day and moderate to vigorous physical activity (MVPA) among individuals with PFP.
Cross-sectional observational study.
Thirty-nine participants (11 males) with PFP were included. Dependent variables were steps per day and minutes of MVPA. Independent variables were pain self-efficacy and pain catastrophizing, measured by the pain self-efficacy questionnaire and the pain catastrophizing scale. Participants were given an ActiGraph wGT3X-BT for 7 days to assess physical activity. Correlations were assessed between psychological measures and physical activity, and a simple linear regression was performed on psychological variables that correlated with physical activity. Alpha was set a priori at P < .05.
Pain self-efficacy scores displayed a moderate association with steps per day (rho = .45, P = .004) and a weak association with MVPA (rho = .38, P = .014). Pain catastrophizing scores exhibited no significant associations with physical activity (P < .05). Regression models affirmed pain self-efficacy scores as significant predictors of both steps per day (F1,37 = 10.30, P = .002) and MVPA (F1,37 = 8.98, P = .004).
Psychological measures continue to demonstrate value to clinicians treating PFP. Pain self-efficacy scores were moderately associated with steps per day and weakly associated with MVPA, explaining nearly a fifth of the variation in physical activity. Clinicians should prioritize the assessment of pain self-efficacy when treating individuals with PFP, potentially employing psychological interventions to improve physical activity in the PFP population.
髌股疼痛（PFP）是一种常见的慢性疾病，其特征为膝前或髌周疼痛，在各种膝关节弯曲活动时加重。先前的研究强调了心理结构对慢性肌肉骨骼疼痛疾病中疼痛和功能的影响，但它们对 PFP 患者群体中身体活动的影响仍未得到探索。我们旨在评估疼痛自我效能感和疼痛灾难化是否可以预测 PFP 患者每天的步数和中等到剧烈体力活动（MVPA）的变化。
横断面观察性研究。
纳入 39 名 PFP 患者（11 名男性）。因变量为每天的步数和 MVPA 分钟数。自变量为疼痛自我效能感和疼痛灾难化，分别通过疼痛自我效能感问卷和疼痛灾难化量表进行测量。参与者佩戴 ActiGraph wGT3X-BT 7 天以评估身体活动。评估心理测量与身体活动之间的相关性，并对与身体活动相关的心理变量进行简单线性回归。预先设定 alpha 值为 P <.05。
疼痛自我效能感评分与每天的步数呈中度相关（rho =.45，P =.004），与 MVPA 呈弱相关（rho =.38，P =.014）。疼痛灾难化评分与身体活动无显著相关性（P <.05）。回归模型证实疼痛自我效能感评分是每天步数（F1,37 = 10.30，P =.002）和 MVPA（F1,37 = 8.98，P =.004）的显著预测因素。
心理测量继续为治疗 PFP 的临床医生提供价值。疼痛自我效能感评分与每天的步数中度相关，与 MVPA 弱相关，解释了身体活动变化的近五分之一。临床医生在治疗 PFP 患者时应优先评估疼痛自我效能感，可能采用心理干预措施来提高 PFP 人群的身体活动水平。
