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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Journal ArticleDOI
Reliability of a 1-h endurance performance test in trained female cyclists.
TL;DR: The results suggest that under controlled conditions average absolute power output during a 1-h endurance test is a reliable measure for trained female cyclists.
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Identifying home advantage in international tennis and golf tournaments
TL;DR: In this paper, a regression analysis of competitors' tournament results in relation to their world rankings was proposed to identify the effect of home advantage in international tennis and major-golf tournaments.
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The effects of sample size and variability on the correlation coefficient.
TL;DR: Although sample size did not affect the mean PCC, it did have a dramatic effect on extreme percentile values producing unreliable results, indicating that a small PCC value can be an artifact of variability.
Journal Article
Evaluation of instrument error and method agreement.
TL;DR: The key idea to remember is that device evaluation and method agreement studies are based on the desire to know how much trust the authors should place in single measurements that may be used to make life support decisions.