Quantification of lumbar function. Part 2: Sagittal plane trunk strength in chronic low-back pain patients

A prototype sagittal plane trunk strength tester was used to measure trunk strength in 286 chronic low-back pain patients. Initial data for this patient group are compared with data acquired previously from a group of controls, adjusted for age, sex, and body weight. Distinct patterns characterize t...

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Bibliographic Details
Published inSpine (Philadelphia, Pa. 1976) Vol. 10; no. 8; p. 765
Main Authors Mayer, T G, Smith, S S, Keeley, J, Mooney, V
Format Journal Article
LanguageEnglish
Published United States 01.10.1985
Subjects
Adult
Age Factors
Back Pain - physiopathology
Body Weight
Female
Humans
Lumbosacral Region
Male
Middle Aged
Movement
Muscles - physiopathology
Physiology - instrumentation
Sex Factors
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Summary:A prototype sagittal plane trunk strength tester was used to measure trunk strength in 286 chronic low-back pain patients. Initial data for this patient group are compared with data acquired previously from a group of controls, adjusted for age, sex, and body weight. Distinct patterns characterize the patient sample as opposed to the controls: Patient values for both flexors and extensors were markedly decreased, with greater variability; Extensor strength was affected more significantly than flexor strength; Discrepancies between patients and controls were greater for females than for males; High-speed dropoff ratios were much lower for patients, both in flexion and extension. These results demonstrate that strength deficits are a major factor in the deconditioning syndrome associated with chronic low-back pain.
ISSN:0362-2436
DOI:10.1097/00007632-198510000-00012