Journal ArticleDOI
Statistical Methods For Assessing Measurement Error (Reliability) in Variables Relevant to Sports Medicine
Greg Atkinson,Alan M. Nevill +1 more
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TLDR
It is recommended that sports clinicians and researchers should cite and interpret a number of statistical methods for assessing reliability and encourage the inclusion of the LOA method, especially the exploration of heteroscedasticity that is inherent in this analysis.Abstract:
Minimal measurement error (reliability) during the collection of interval- and ratio-type data is critically important to sports medicine research. The main components of measurement error are systematic bias (e.g. general learning or fatigue effects on the tests) and random error due to biological or mechanical variation. Both error components should be meaningfully quantified for the sports physician to relate the described error to judgements regarding ‘analytical goals’ (the requirements of the measurement tool for effective practical use) rather than the statistical significance of any reliability indicators.read more
Citations
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Reliability and validity of skin temperature measurement by telemetry thermistors and a thermal camera during exercise in the heat.
TL;DR: Investigation of skin temperature measurements using a telemetry thermistor system (TT) and thermal camera (TC) during exercise in a hot environment indicates TT systems provide a convenient, valid and reliable alternative to HW, useful for measurements in the field where traditional methods may be impractical.
Journal ArticleDOI
Statistical methods for the validation of questionnaires--discrepancy between theory and practice.
M. E. Schmidt,K. Steindorf +1 more
TL;DR: It is shown that serious bias in questionnaires can be revealed by Bland-Altman plots but may remain undetected by correlation coefficients, and the commonly used correlation approach can yield misleading conclusions in validation studies.
Journal ArticleDOI
Reliability of ultrasonographic measurement of the architecture of the vastus lateralis and gastrocnemius medialis muscles in older adults
TL;DR: To determine the test‐retest reliability of measurements of thickness, fascicle length, and pennation angle of the vastus lateralis and gastrocnemius medialis muscles in older adults, a large number of studies have found it to be reliable.
Journal ArticleDOI
Actigraph calibration in obese/overweight and type 2 Diabetes Mellitus middle-aged to old adult patients
TL;DR: The Actigraph is a valid and useful device for the assessment of the amount of time spent in each PA intensity levels in obese/overweight and DM2 middle-aged to old adult patients.
Journal ArticleDOI
Validity and reliability of a new field test (Carminatti's test) for soccer players compared with laboratory-based measures
Juliano Fernandes da Silva,Luiz Guilherme Antonacci Guglielmo,Lorival José Carminatti,Fernando Roberto de Oliveira,Naiandra Dittrich,Carl D. Paton +5 more
TL;DR: Carminatti's test appears to be avalid and reliable measure of physical fitness and of the ability to perform intermittent high-intensity exercise in soccer players.
References
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Journal ArticleDOI
Statistical methods for assessing agreement between two methods of clinical measurement.
TL;DR: An alternative approach, based on graphical techniques and simple calculations, is described, together with the relation between this analysis and the assessment of repeatability.
Book
Practical statistics for medical research
TL;DR: Practical Statistics for Medical Research is a problem-based text for medical researchers, medical students, and others in the medical arena who need to use statistics but have no specialized mathematics background.
Journal ArticleDOI
Statistical methods for assessing agreement between two methods of clinical measurement
TL;DR: In this article, an alternative approach, based on graphical techniques and simple calculations, is described, together with the relation between this analysis and the assessment of repeatability, which is often used in clinical comparison of a new measurement technique with an established one.
Journal ArticleDOI
A concordance correlation coefficient to evaluate reproducibility.
TL;DR: A new reproducibility index is developed and studied that is simple to use and possesses desirable properties and the statistical properties of this estimate can be satisfactorily evaluated using an inverse hyperbolic tangent transformation.