Journal ArticleDOI
Statistical Methods For Assessing Measurement Error (Reliability) in Variables Relevant to Sports Medicine
Greg Atkinson,Alan M. Nevill +1 more
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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Journal ArticleDOI
Circadian rhythms in sports performance--an update.
TL;DR: There is a wealth of information from both applied and experimental work, which, when considered together, suggests that sports performance is affected by time of day in normal entrained conditions and that the variation has at least some input from endogenous mechanisms.
Journal ArticleDOI
Reliability of measures obtained during single and repeated countermovement jumps
TL;DR: Variables derived from the CMJ5 may respond differently than their CMJ1 counterparts and should provide insights into differential mechanisms of response and adaptation and the impact of both acute and chronic training and competition.
Journal ArticleDOI
The ingestible telemetric body core temperature sensor: a review of validity and exercise applications
Christopher Byrne,Chin Leong Lim +1 more
TL;DR: It is concluded that the ingestible telemetric temperature sensor represents a valid index of Tc and shows excellent utility for ambulatory field-based applications.
Journal ArticleDOI
How many days of pedometer monitoring predict weekly physical activity in adults
Catrine Tudor-Locke,L. Burkett,Jared P. Reis,Barbara E. Ainsworth,Caroline A. Macera,Dawn K. Wilson +5 more
TL;DR: Although there is a statistical difference between days, there is little practical difference, and the primary distinction appears limited to Sunday, suggesting any 3 days can provide a sufficient estimate.
Journal ArticleDOI
Branched equation modeling of simultaneous accelerometry and heart rate monitoring improves estimate of directly measured physical activity energy expenditure
Soren Brage,Niels Brage,Paul W. Franks,Ulf Ekelund,Man Yu Wong,Lars Bo Andersen,Karsten Froberg,Nicholas J. Wareham +7 more
TL;DR: Combining HR and CSA by branched modeling improves estimates of PAEE, and IC may be less crucial with this modeling technique.
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.