• William Levack-Payne.
• Department of Philosophy the University of Kent, Canterbury, UK.
• J Eval Clin Pract. 2022 Oct 1; 28 (5): 745751745-751.

RationaleExercise interventions and policies are widely prescribed in both sport and healthcare. Research investigating exercise interventions and policies is generally conducted using an Evidence-Based framework, placing an emphasis on evidence gathered from randomised controlled trials (RCTs).Aims And ObjectivesTo explore the idea that, in addition to the assessment of evidence from RCTs when investigating exercise interventions, mechanistic studies ought to also be assessed and considered.MethodsThis article assesses the rationale supporting the use of RCTs as evidence for exercise interventions, and the use of evidence of mechanisms in establishing efficacy, determining external validity, and tailoring interventions.Results And ConclusionsThe article argues that evidence from mechanistic studies ought to be considered alongside evidence from RCTs because: as RCTs investigating exercise interventions tend to be of low quality, mechanistic studies ought to be used to reinforce the evidence base; further, evidence from mechanistic studies is highly useful for both questions of extrapolation and implementation. This article argues for this on theoretical grounds, and also draws on a number of case studies.© 2022 The Authors. Journal of Evaluation in Clinical Practice published by John Wiley & Sons Ltd.

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