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Reducing measurement errors during functional capacity tests in elders.

Mariane Eichendorf da Silva¹, Lucas Bet da Rosa Orssatto¹, Ewertton de Souza Bezerra^1,2

¹Laboratório de Biomecânica, Centro de Desportos, Universidade Federal de Santa Catarina, Campus Reitor João David Ferreira Lima, Trindade, Florianópolis, Santa Catarina, CEP 88040-900, Brazil.

Aging Clinical and Experimental Research

|August 25, 2017

Summary

This summary is machine-generated.

Functional capacity tests for elders show measurement errors due to evaluator timing discrepancies. Using video analysis and calculating the technical error of measurement can improve accuracy.

Keywords:

Accuracy Aging Epidemiologic measurements Exercise test Validity

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Area of Science:

Gerontology
Biomedical Engineering
Physical Therapy

Background:

Accurate measurement of functional capacity is crucial for valid health assessments in elders.
Variability in measurement can impact the reliability of functional capacity data.

Purpose of the Study:

To assess the measurement error in functional capacity tests administered to older adults.
To recommend the technical error of measurement and credibility coefficient for enhanced data validity.

Main Methods:

Twenty elders (mean age 65.8 years) performed six functional capacity tests.
Tests were filmed, with four evaluators using chronometers and a fifth using video analysis for reference timing.

Main Results:

Most evaluator timings differed significantly from the reference video data (p < 0.05).
Technical error of measurement varied across tests and evaluators, with shorter tests exhibiting higher error.
Chronometer timing tended to underestimate functional capacity.

Conclusions:

Discrepancies in evaluators' reaction times and subjective start/end point perception contribute to measurement errors.
Implementing video analysis and calculating the technical error of measurement can improve the validity of functional capacity data.