The quality of physical activity guidelines, but not the specificity of their recommendations, has improved over time: a systematic review and critical appraisal.

Siedler MR, Lamadrid P, Humphries MN, Mustafa RA, Falck-Ytter Y, Dahm P, Sultan S, Murad MH, Morgan RL. The quality of physical activity guidelines, but not the specificity of their recommendations, has improved over time: a systematic review and critical appraisal. Applied physiology, nutrition, and metabolism = Physiologie appliquee, nutrition et metabolisme. 2021 Jan 1; 46(1):34-45.

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Abstract:

While numerous guidelines for the prescription of physical activity are released each year, the quality and practicability of these guidelines is unknown. We assessed the quality of 95 guidance documents published since 2000 that included recommendations about physical activity for the promotion of general health and prevention of cardiometabolic disease. We used 3 tools: Appraisal of Guidelines for Research and Evaluation (AGREE II), the National Academy of Medicine''s (NAM) Standards for Trustworthy Clinical Practice Guidelines, and the Frequency, Intensity, Time, and Type (FITT) score. Average AGREE II domain scores ranged from 38%-84%, and the portion of criteria fulfilled per NAM domain ranged from 7%-39%. The average FITT score for all recommendations was 2.48 out of 4. While guidelines improved according to both AGREE II and the NAM standards over time, their practicability as assessed by FITT score did not improve. Guidelines produced by governmental agencies or other nonprofit organizations, using the Grading of Recommendations Assessment, Development, and Evaluation (GRADE) approach, or fulfilling a higher number of NAM criteria tended to be of higher quality. Organizations producing physical activity guidelines can improve their quality by establishing and reporting processes for public representation, external review, and conflict of interest (COI) management. Future recommendations about physical activity should be more specific and include strategies to improve implementation. Registration no.: PROSPERO CRD42019126364. Most physical activity recommendations are not sufficiently specific to be practically implemented. The overall quality of guidelines has improved over time, but the specificity of recommendations has not. Improved public representation, external review, and COI disclosure and management processes would improve guideline quality.