Khan Muhammad, Zafar Hamayun, Gilani Syed Amir
Dr. Muhammad Khan PT, MSPT (UK), Institute of Physical Therapy & Rehabilitation Jinnah Sindh Medical University, Karachi, Pakistan.
Prof. Dr. Hamayun Zafar. PT, PhD (Sweden), Department of Rehabilitation Sciences, College of Applied Medical Sciences & Medical Research Chair, King Saud University Riyadh, Saudi Arabia.
Pak J Med Sci. 2022 Mar-Apr;38(4Part-II):987-991. doi: 10.12669/pjms.38.4.4952.
To determine the inter-rater reliability of pressure biofeedback unit among individuals with and without chronic low back pain.
This cross-sectional survey was conducted from February 2021 to March 2021 at the Physiotherapy Department of the Sindh Institute of Physical Medicine and Rehabilitation. Sixteen subjects which were recruited with and without chronic low back pain.(CLBP). During the test, abdominal drawing in movement was monitored by measuring a change in pressure detected in PBU. Each test was performed once by two trained assessors with period of seven days. Reliability indices of Pressure Biofeedback (PBU) measures including the Intraclass correlation coefficient [ICC] and Band Altman plot were analyzed.
This study found an intra-class correlation coefficient (ICC) = 0.94 [95% confidence interval (CI) (0.37, 0.99] for inter-rater reliability in healthy individuals, and an ICC of 0.97 (95% CI 0.97, 0.98) for inter-rater reliability in CLBP. The interrater agreement (Limits of Agreement-LOA=5.92, -3.9 mmHg) in CLBP and the interrater agreement (LOA=5.75, -3.25 mmHg) in healthy individuals were within the limits of agreement on 95% of occasions.
Pressure Biofeedback Unit has showed excellent inter-rater reliability in measuring Transverse Abdominis muscle activity for individuals with and without chronic LBP.
确定压力生物反馈装置在慢性下腰痛患者和非慢性下腰痛患者中的评分者间信度。
本横断面调查于2021年2月至2021年3月在信德物理医学与康复研究所理疗科进行。招募了16名有或无慢性下腰痛（CLBP）的受试者。在测试过程中，通过测量压力生物反馈装置（PBU）检测到的压力变化来监测收腹动作。每项测试由两名经过培训的评估者进行一次，间隔7天。分析了压力生物反馈（PBU）测量的信度指标，包括组内相关系数[ICC]和布兰德-奥特曼图。
本研究发现，健康个体的评分者间信度组内相关系数（ICC）=0.94[95%置信区间（CI）（0.37，0.99]，慢性下腰痛患者的评分者间信度ICC为0.97（95%CI 0.97，0.98）。慢性下腰痛患者的评分者间一致性（一致性界限-LOA=5.92，-3.9 mmHg）和健康个体的评分者间一致性（LOA=5.75，-3.25 mmHg）在95%的情况下都在一致性界限内。
压力生物反馈装置在测量慢性下腰痛患者和非慢性下腰痛患者的腹横肌活动方面显示出极好的评分者间信度。
