Hodselmans Audy P, Dijkstra Pieter U, van der Schans Cees, Geertzen Jan H B
Hanze University Groningen School of Health Care Studies, Department of Physiotherapy, Eyssoniusplein 18, Groningen, The Netherlands.
J Rehabil Med. 2007 Mar;39(2):133-7. doi: 10.2340/16501977-0014.
Psychophysical lift capacity tests are lifting tests in which the performance, expressed in Newtons, is divided by the perceived exertion, expressed on a Borg scale. The aim of this study was to analyse test-retest reliability of psychophysical lift capacity tests.
Patients with non-specific chronic low back pain (n=20) and healthy subjects (n=20).
Psychophysical lift capacity tests were assessed during a back school intake at the Centre for Rehabilitation of the University Medical Centre Groningen. Patients on the waiting list and healthy subjects were assessed twice, with a 2-week interval between assessments. Intra-class correlation (ICC) was calculated as a measure of reliability. An ICC > or = 0.75 was considered as an acceptable reliability. Limits of agreement as a measure for natural variation were calculated.
The psychophysical static and dynamic lift capacity tests showed good reliability (ICC > or = 0.75). The limits of agreement are substantial, indicating a considerable natural variation between test-sessions for all psychophysical tests.
The psychophysical static lift capacity and dynamic lifting capacity are reliable instruments for patients with non-specific chronic low back pain and healthy subjects. However, a substantial amount of natural variation should be taken into account between 2 test sessions when interpreting the test results clinically.
心理物理学举重能力测试是一种举重测试，其中以牛顿表示的表现除以以博格量表表示的感知用力程度。本研究的目的是分析心理物理学举重能力测试的重测信度。
非特异性慢性下腰痛患者（n = 20）和健康受试者（n = 20）。
在格罗宁根大学医学中心康复中心的一次背部训练课程中对心理物理学举重能力测试进行评估。对等候名单上的患者和健康受试者进行了两次评估，评估间隔为2周。计算组内相关系数（ICC）作为信度的一种度量。ICC≥0.75被认为是可接受的信度。计算一致性界限作为自然变异的一种度量。
心理物理学静态和动态举重能力测试显示出良好的信度（ICC≥0.75）。一致性界限很大，表明所有心理物理学测试在测试 sessions 之间存在相当大的自然变异。
心理物理学静态举重能力和动态举重能力对于非特异性慢性下腰痛患者和健康受试者是可靠的工具。然而，在临床解释测试结果时，应考虑到两个测试 sessions 之间存在大量的自然变异。
