Background

The number of researchers and clinicians using movement-evoked pain and sensitivity to movement-evoked pain to assess shoulder pain has increased. However, the intrarater test-retest reliability of movement-evoked pain and sensitivity to movement-evoked pain in people with rotator cuff-related shoulder pain (RCRSP) is still unknown.

Objective

We examined the intrarater test-retest reliability of movement-evoked pain and sensitivity to movement-evoked pain in participants with RCRSP.

Methods

Seventy-four participants with RCRSP performed five trials of active shoulder abduction to elicit pain under two experimental conditions: active shoulder abduction to the onset of pain and maximum range of motion (ROM). The primary outcome measures were pain intensity and ROM. Test-retest reliability of movement-evoked pain and sensitivity to movement-evoked pain was examined using intraclass correlation coefficient (ICC_3,1) and minimal detectable change (MDC₉₀).

Results

The reliability of movement-evoked pain under both experimental conditions was good to excellent (ICC: 0.81 to 0.95), while the reliability of sensitivity to movement-evoked pain was poor in both conditions (ICC≤0.45). The MDC₉₀ for pain intensity was 1.6 and 1.8 during shoulder abduction to the onset of pain and maximum ROM, respectively. The MDC₉₀ for ROM was 17.5° and 11.2° during shoulder abduction to the onset of pain and maximum ROM condition, respectively.

Conclusion

This study confirms movement-evoked pain testing during active shoulder abduction to the onset of pain or maximum ROM condition is reliable to assess pain associated with movement in patients with RCRSP. The minimal detectable change score of movement-evoked pain can guide clinicians and researchers on how to interpret changes in these outcomes.

中文翻译：

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肩袖相关肩痛患者运动诱发疼痛的重测可靠性和运动诱发疼痛敏感性

背景

使用运动引起的疼痛和对运动引起的疼痛的敏感性来评估肩部疼痛的研究人员和临床医生的数量有所增加。然而，对于肩袖相关肩痛 (RCRSP) 患者的运动诱发疼痛和运动诱发疼痛敏感性的评估者内重测可靠性仍然未知。

客观的

我们检查了 RCRSP 参与者运动诱发疼痛的评估者内重测可靠性和对运动诱发疼痛的敏感性。

方法

74 名 RCRSP 参与者在两种实验条件下进行了五次主动肩部外展以引发疼痛：主动肩部外展至疼痛发作和最大运动范围 (ROM)。主要结果指标是疼痛强度和活动度。_{使用组内相关系数（ICC 3,1}）和最小可检测变化（MDC ₉₀ ）检查运动诱发疼痛的重测可靠性和对运动诱发疼痛的敏感性。

结果

两种实验条件下运动诱发疼痛的可靠性均为良好至优秀（ICC：0.81至0.95），而运动诱发疼痛敏感性的可靠性在两种条件下均较差（ICC≤0.45）。在肩部外展至疼痛发作期间和最大 ROM 期间，疼痛强度的MDC ₉₀分别为 1.6 和 1.8。在肩部外展至疼痛发作和最大 ROM 状态期间，R​​OM 的 MDC 90_{分别为 17.5° 和 11.2°。}

结论

这项研究证实，在主动肩部外展至疼痛发作或最大活动度状态期间运动诱发的疼痛测试对于评估 RCRSP 患者与运动相关的疼痛是可靠的。运动引起的疼痛的最小可检测变化评分可以指导临床医生和研究人员如何解释这些结果的变化。