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Related Experiment Videos

Back pain: a study of twins.

B Bengtsson1, J Thorson

  • 1Department of Environmental Medicine, University of Umeå, Sweden.

Acta Geneticae Medicae Et Gemellologiae
|January 1, 1991
PubMed
Summary

Genetic factors significantly influence back pain. This study found higher back pain concordance in identical twins compared to fraternal twins, suggesting a genetic link to this common condition.

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Area of Science:

  • Genetics
  • Epidemiology
  • Musculoskeletal Disorders

Background:

  • Back pain is a prevalent health issue with complex etiology.
  • Understanding the interplay of genetic and environmental factors is crucial for effective management.

Purpose of the Study:

  • To investigate the association between genetic predisposition and the occurrence of back pain.
  • To differentiate the contributions of genetic versus environmental influences on back pain.

Main Methods:

  • A large-scale twin study involving 5029 monozygotic (MZ) and 7876 dizygotic (DZ) twin pairs.
  • Data collected via questionnaires on physical symptoms (back pain) and work conditions.
  • Analysis of twin concordance rates and comparison between MZ and DZ pairs.
  • Validation of questionnaire data using official sick-leave records.

Main Results:

  • Back pain prevalence was approximately 17% in males and 13% in females.
  • A strong association between back pain and workload was observed, particularly in males.
  • Significantly higher concordance rates for back pain were found in MZ twins compared to DZ twins across multiple analyses.
  • Sick-leave data corroborated questionnaire findings, with minor discrepancies.

Conclusions:

  • The findings strongly support the hypothesis that genetic factors play a significant role in the development of back pain.
  • Both genetic predisposition and environmental factors, such as workload, contribute to back pain occurrence.
  • Twin studies provide a valuable model for dissecting the heritability of complex conditions like back pain.

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