Test-retest reliability of psychophysical lifting capacity in patients with chronic non specific low back pain and healthy subjects

Audy Paul Hodselmans, Pieter Dijkstra, Cees van der Schans, Jan H B Geertzen

Research output: Contribution to journalArticleAcademicpeer-review

Abstract

Objective: 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.
Subjects: Patients with non-specific chronic low back pain (n=20) and healthy subjects (n=20).
Methods: 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 ≥0.75 was considered as an acceptable reliability. Limits of agreement as a measure for natural variation were calculated.
Results: The psychophysical static and dynamic lift capacity tests showed good reliability (ICC ≥0.75). The limits of agreement are substantial, indicating a considerable natural variation between test-sessions for all psychophysical tests.
Conclusion: 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.
Original languageEnglish
Pages (from-to)133-137
JournalJournal of rehabilitation medicine
Volume39
Issue number2
DOIs
Publication statusPublished - 2007

Keywords

  • low back pain
  • lifting tests

Cite this

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title = "Test-retest reliability of psychophysical lifting capacity in patients with chronic non specific low back pain and healthy subjects",
abstract = "Objective: 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.Subjects: Patients with non-specific chronic low back pain (n=20) and healthy subjects (n=20).Methods: 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 ≥0.75 was considered as an acceptable reliability. Limits of agreement as a measure for natural variation were calculated.Results: The psychophysical static and dynamic lift capacity tests showed good reliability (ICC ≥0.75). The limits of agreement are substantial, indicating a considerable natural variation between test-sessions for all psychophysical tests.Conclusion: 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.",
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author = "Hodselmans, {Audy Paul} and Pieter Dijkstra and {van der Schans}, Cees and Geertzen, {Jan H B}",
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Test-retest reliability of psychophysical lifting capacity in patients with chronic non specific low back pain and healthy subjects. / Hodselmans, Audy Paul; Dijkstra, Pieter; van der Schans, Cees; Geertzen, Jan H B.

In: Journal of rehabilitation medicine, Vol. 39, No. 2, 2007, p. 133-137.

Research output: Contribution to journalArticleAcademicpeer-review

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T1 - Test-retest reliability of psychophysical lifting capacity in patients with chronic non specific low back pain and healthy subjects

AU - Hodselmans, Audy Paul

AU - Dijkstra, Pieter

AU - van der Schans, Cees

AU - Geertzen, Jan H B

PY - 2007

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N2 - Objective: 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.Subjects: Patients with non-specific chronic low back pain (n=20) and healthy subjects (n=20).Methods: 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 ≥0.75 was considered as an acceptable reliability. Limits of agreement as a measure for natural variation were calculated.Results: The psychophysical static and dynamic lift capacity tests showed good reliability (ICC ≥0.75). The limits of agreement are substantial, indicating a considerable natural variation between test-sessions for all psychophysical tests.Conclusion: 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.

AB - Objective: 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.Subjects: Patients with non-specific chronic low back pain (n=20) and healthy subjects (n=20).Methods: 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 ≥0.75 was considered as an acceptable reliability. Limits of agreement as a measure for natural variation were calculated.Results: The psychophysical static and dynamic lift capacity tests showed good reliability (ICC ≥0.75). The limits of agreement are substantial, indicating a considerable natural variation between test-sessions for all psychophysical tests.Conclusion: 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.

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