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Estimating the Replicability of Sports and Exercise Science Research.

Jennifer Murphy1, Aaron R Caldwell2, Cristian Mesquida3,4

  • 1School of Biological, Health and Sport Sciences, Technological University Dublin, Tallaght Campus, Blessington Rd, Dublin 9, Ireland. jennymurphy1@outlook.ie.

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Replicability in sports and exercise science is low, with only 28% of studies validated. Researchers must address effect size uncertainty and improve data transparency for reliable scientific practices.

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Area of Science:

  • Sports and Exercise Science
  • Scientific Reproducibility
  • Research Integrity

Background:

  • Concerns exist regarding scientific practices in sports and exercise research.
  • The replicability of this field has not been previously assessed.

Purpose of the Study:

  • To estimate the replicability of applied sports and exercise science research.
  • Focus on studies published in quartile 1 journals between 2016 and 2021.

Main Methods:

  • A formalised selection protocol guided the replication project.
  • Voluntary collaborators were recruited and studies were randomized.
  • Original authors were contacted for data and clarifications; statistical analyses included t-tests and ANOVA.

Main Results:

  • 25 replication studies were analyzed.
  • Only 7 (28%) studies demonstrated robust replicability.
  • Replicated studies showed a significant decrease in effect size magnitudes compared to original studies.

Conclusions:

  • Substantial decrease in published effect size magnitudes upon replication.
  • Sports and exercise science researchers should account for effect size uncertainty in power analyses.
  • Barriers included poor communication with original authors and lack of data transparency.