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Reliability and validity are two important considerations that must be made with any type of data collection. Reliability refers to the ability to consistently produce a given result. In the context of psychological research, this would mean that any instruments or tools used to collect data do so in consistent, reproducible ways.
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The upper limb Physiological Profile Assessment: Description, reliability, normative values and criterion validity.

Lewis A Ingram1,2, Annie A Butler1,2, Lee D Walsh3

  • 1Neuroscience Research Australia, Sydney, New South Wales, Australia.

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|June 28, 2019
PubMed
Summary
This summary is machine-generated.

This study introduces the upper limb Physiological Profile Assessment (PPA) to measure arm function across age and gender. The PPA reliably identifies age-related declines and differences between sexes, aiding in diagnosing upper limb impairments.

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Area of Science:

  • Gerontology
  • Neuroscience
  • Rehabilitation Medicine

Background:

  • Ageing and disease progressively impair upper limb function.
  • Standardized assessments are needed to quantify these declines.
  • Existing tests may not comprehensively cover all physiological domains.

Purpose of the Study:

  • To develop and validate the upper limb Physiological Profile Assessment (PPA).
  • To establish normative values for age and gender across various upper limb functions.
  • To assess the reliability and validity of the PPA for clinical use.

Main Methods:

  • Cross-sectional study of 367 healthy individuals aged 20-95 years.
  • Utilized a battery of tests measuring strength, dexterity, sensation, coordination, and stability.
  • Assessed test-retest reliability, age/gender differences, and external validity.

Main Results:

  • Established age and gender-specific normative data for upper limb function.
  • Demonstrated good to excellent test-retest reliability for most PPA components.
  • Identified significant age-related declines and sex-based performance differences.

Conclusions:

  • The upper limb PPA is a reliable and valid tool for assessing physiological domains of upper limb function.
  • It provides reference ranges for clinical populations and can identify undiagnosed deficits.
  • The PPA can detect motor impairments and evaluate intervention effectiveness.