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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Measures of reliability in sports medicine and science.
TL;DR: A wider understanding of reliability and adoption of the typical error as the standard measure of reliability would improve the assessment of tests and equipment in the authors' disciplines.
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Quantifying test-retest reliability using the intraclass correlation coefficient and the SEM.
TL;DR: In this review, the basics of classic reliability theory are addressed in the context of choosing and interpreting an ICC and how the SEM and its variants can be used to construct confidence intervals for individual scores and to determine the minimal difference needed to be exhibited for one to be confident that a true change in performance of an individual has occurred.
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Match performance of high-standard soccer players with special reference to development of fatigue
TL;DR: Top-class soccer players performed more high-intensity running during a game and were better at the Yo-Yo test than moderate professional players; fatigue occurred towards the end of matches as well as temporarily during the game, independently of competitive standard and of team position; defenders covered a shorter distance in high- intensity running than players in other playing positions.
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The International Physical Activity Questionnaire (IPAQ): a study of concurrent and construct validity.
TL;DR: The long, self-administered IPAQ questionnaire has acceptable validity when assessing levels and patterns of PA in healthy adults and might introduce a source of error in criterion validation studies.
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An Introduction to Medical Statistics
TL;DR: It is scarcely an exaggeration to say that the recently issued preliminary report on the census of 1931 is one of the most sensational documents which has appeared for years, and that he who reads it intelligently will understand what is meant by saying that civilisation is in the melting pot.
References
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Declare Your ICC Type
TL;DR: A fundamental error in reporting in intraclass correlation coefficients (ICCs) has escaped this journal's attention: Too few articles report the type of ICC used, despite the existence of at least six types of ICCs.
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A comparison of three methods of assessing interobserver variation applied to measurement of the symphysis-fundal height
TL;DR: It is shown that the fundal height cannot be measured by different observers with sufficient agreement to separate small fundal heights from those which are not small, and this severely limits the usefulness of measurement of the symphysis‐fundal height as a screening test for intrauterine growth retardation.
Journal Article
Evaluation of instrument error and method agreement
TL;DR: In this paper, the authors define two types of measurement errors: systematic errors (predictable problems usually due to calibration) and random errors, which are quantified by experiments involving repeated measurements of standards or "true" values.
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Current issues and future directions for performance‐related research in sport psychology
Lew Hardy,Graham Jones +1 more
TL;DR: Thirty-seven British and international sport psychologists were asked to nominate performance-related issues that they considered to be priorities for research over the next 5-10 years, and every attempt was made to offer sufficient evidence to provide a clear rationale for each research issue.
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Ability of biolectric impedance to predict fat-free mass in prepubertal children.
TL;DR: The ability of Tetrapolar whole body impedance to predict body composition in children depends on the equation chosen and that the general applicability of BI equations cannot be safely assumed.