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Non-dynamometric trunk performance tests: reliability and normative data

H Alaranta1, H Hurri, M Heliövaara

  • 1Rehabilitation Unit, Invalid Foundation, Helsinki, Finland.

Scandinavian Journal of Rehabilitation Medicine
|December 1, 1994
PubMed
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This study found that trunk muscle performance tests are reliable and provide normative values. Muscle capacity declines with age, especially in blue-collar workers, and is lower in men and those with prior low-back pain.

Area of Science:

  • Occupational health and ergonomics
  • Musculoskeletal research
  • Clinical biomechanics

Background:

  • Trunk muscle performance is crucial for occupational health.
  • Reliable tests and normative data are needed to assess trunk muscle function.
  • Factors like age, sex, occupation, and pain history may influence performance.

Purpose of the Study:

  • To evaluate the test-retest reliability of four trunk muscle performance tests.
  • To establish normative values for these tests across different demographics.
  • To identify determinants of trunk muscle performance in employees.

Main Methods:

  • Clinical evaluation of 508 employees (aged 35-54).
  • Inclusion of repetitive sit-ups, arch-ups, squatting, and static back endurance tests.

Related Experiment Videos

  • Analysis of age, sex, occupation (white-collar vs. blue-collar), and prior low-back pain.
  • Main Results:

    • All tested trunk muscle performance measures demonstrated good to excellent reliability.
    • Muscle performance capacity decreased with increasing age, notably in blue-collar workers.
    • Men exhibited higher endurance; blue-collar workers and individuals with prior low-back pain showed lower performance.

    Conclusions:

    • Repetitive and static trunk muscle tests are reliable for assessing employee physical capacity.
    • Normative data are presented for various demographic and occupational groups.
    • Age, sex, occupation, and history of low-back pain are significant determinants of trunk muscle performance.