Experimentally induced pain increases absolute but not relative errors and reduces variability in joint repositioning of the knee joint in healthy participants

IF 2.2 3区 医学 Q1 REHABILITATION Musculoskeletal Science and Practice Pub Date : 2024-09-17 DOI:10.1016/j.msksp.2024.103188
Michalis A. Efstathiou , Stelios Hadjisavvas , Irene-Chrysovalanto Themistocleous , Katerina Daskalaki , Zoi Roupa , Savoula Ghobrial , Christoforos Giannaki , Christos Savva , Lee Herrington , Manos Stefanakis
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Abstract

Background

Joint position sense (JPS) plays an important role in knee joint function. Despite the possible influence of pain on the proprioceptive system, the effects of experimental muscle pain on knee JPS have not been studied.

Objectives

To investigate if experimentally induced muscle pain affects knee JPS in healthy participants.

Methods

Measurements of knee JPS were conducted before and after the injection of 5.8% sterile hypertonic saline in the vastus medialis muscle of 26 healthy physically active adults. Knee JPS was assessed through a passive/active repositioning paradigm in target angles of 15°, 45° and 60° using an isokinetic dynamometer. Absolute and relative angular errors were calculated. The coefficient of variation analysis was used to assess differences in the angles’ variability during the repositioning task.

Results

Absolute angular error increased in all three angles following experimentally induced pain. The difference was statistically significant at 45° (p = 0.003, d = 0.6) and 15° (p = 0.047, d = 0.4) but not at 60° (p = 0.064, d = 0.4). Relative error did not show directional bias at 45° (p = 0.272, d = 0.2), 15° (p = 0.483, d = 0.1) or 60° (p = 0.091, d = 0.3). The coefficient of variation analysis revealed a statistically significant reduction in variability at angles of 60° (p = 0.002, d = 0.7) and 15° (p = 0.031, d = 0.4) after the pain intervention.

Conclusion

The presence of experimentally induced muscle pain affects the ability of healthy participants to accurately reposition the knee at two angles of knee flexion and reduces movement variability during the repositioning task. Further research is required to determine if these deficits also impact patients with clinical knee pain.
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实验诱导的疼痛会增加绝对误差,但不会增加相对误差,并降低健康参与者膝关节复位的可变性
背景关节位置感(JPS)在膝关节功能中发挥着重要作用。尽管疼痛可能对本体感觉系统产生影响,但实验性肌肉疼痛对膝关节JPS的影响尚未得到研究。方法在26名健康的运动型成年人的内侧阔肌注射5.8%无菌高渗盐水前后对膝关节JPS进行测量。使用等动测力计在15°、45°和60°目标角度下,通过被动/主动重新定位范例对膝关节JPS进行评估。计算了绝对和相对角度误差。结果在实验诱导疼痛后,所有三个角度的绝对角度误差都有所增加。在 45° (p = 0.003, d = 0.6) 和 15° (p = 0.047, d = 0.4) 时,这种差异具有统计学意义,但在 60° (p = 0.064, d = 0.4) 时,这种差异不具有统计学意义。相对误差在 45°(p = 0.272,d = 0.2)、15°(p = 0.483,d = 0.1)或 60°(p = 0.091,d = 0.3)时未显示出方向偏差。变异系数分析表明,在疼痛干预后,60°(p = 0.002,d = 0.7)和 15°(p = 0.031,d = 0.4)角度的变异性在统计学上显著降低。要确定这些缺陷是否也会影响临床膝关节疼痛患者,还需要进一步的研究。
本文章由计算机程序翻译,如有差异,请以英文原文为准。
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来源期刊
Musculoskeletal Science and Practice
Musculoskeletal Science and Practice Health Professions-Physical Therapy, Sports Therapy and Rehabilitation
CiteScore
4.10
自引率
8.70%
发文量
152
审稿时长
48 days
期刊介绍: Musculoskeletal Science & Practice, international journal of musculoskeletal physiotherapy, is a peer-reviewed international journal (previously Manual Therapy), publishing high quality original research, review and Masterclass articles that contribute to improving the clinical understanding of appropriate care processes for musculoskeletal disorders. The journal publishes articles that influence or add to the body of evidence on diagnostic and therapeutic processes, patient centered care, guidelines for musculoskeletal therapeutics and theoretical models that support developments in assessment, diagnosis, clinical reasoning and interventions.
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