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Related Experiment Videos

Intra- and inter-tester reliability and reference values for isometric neck strength.

A Peolsson1, B Oberg, R Hedlund

  • 1Faculty of Health Sciences, Linköping University, Sweden.

Physiotherapy Research International : the Journal for Researchers and Clinicians in Physical Therapy
|May 31, 2001
PubMed
Summary

This study establishes reliable methods for measuring neck strength using the David Back Clinic 140 (DBC 140). Gender significantly impacts neck strength, with women exhibiting lower values than men.

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Area of Science:

  • Biomechanics
  • Musculoskeletal Health
  • Rehabilitation Science

Background:

  • Lack of established age- and sex-specific reference values for neck strength.
  • Need for reliable measurement methods in an upright position.

Purpose of the Study:

  • Determine intra- and inter-tester reliability of isometric neck strength measurements using David Back Clinic 140 (DBC 140) equipment.
  • Establish age- and sex-specific reference values for neck strength in extension, flexion, and lateral flexion.

Main Methods:

  • Investigated reliability of DBC 140 equipment with 30 healthy volunteers.
  • Obtained reference values from 101 healthy men and women.

Main Results:

  • DBC 140 demonstrated excellent intra- and inter-tester reliability (ICC 0.85–0.97).

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  • Gender was a stronger determinant of neck strength than age, body weight, or BMI.
  • Women's neck strength averaged 55% of men's, decreasing by ~20% between ages 25 and 64.

    • Conclusions:

    • DBC 140 measurements are reliable for assessing neck strength.
    • The first measurement in a series is recommended for clinical use due to maximal value and low intra-tester difference.
    • Gender must be considered when using neck strength reference values for patients with neck disorders.