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Baseline physical activity and the risk of severe illness and mortality from COVID-19: A dose–response meta-analysis

Liu et al., Preventive Medicine Reports, doi:10.1016/j.pmedr.2023.102130
Feb 2023  
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Exercise for COVID-19
9th treatment shown to reduce risk in October 2020, now with p < 0.00000000001 from 68 studies.
No treatment is 100% effective. Protocols combine treatments.
5,000+ studies for 104 treatments. c19early.org
Meta analysis of 14 studies showing a negative dose-response relationship between the level of physical activity and COVID-19 severity and mortality.
6 meta analyses show significant improvements with exercise for mortality1-5, ICU admission1, hospitalization1,2,5,6, severity2-4, and cases2.
Currently there are 68 exercise for COVID-19 studies, showing 48% lower mortality [38‑57%], 46% lower ventilation [32‑57%], 41% lower ICU admission [35‑47%], 33% lower hospitalization [25‑40%], and 23% fewer cases [14‑31%].
Liu et al., 11 Feb 2023, peer-reviewed, 3 authors. Contact: songtaozhenzhen@sina.com.
This PaperExerciseAll
Baseline physical activity and the risk of severe illness and mortality from COVID-19: A dose–response meta-analysis
Junjie Liu, Zhiguang Guo, Songtao Lu
Preventive Medicine Reports, doi:10.1016/j.pmedr.2023.102130
To provide a scientific basis for improved exercise-based immunity, a meta-analysis was used to explore the dose-response relationship between physical activity (PA) and the risk of severe illness and mortality related to COVID-19 (coronavirus disease 2019). To this end, we searched PubMed, Web of Science databases from January 2020 through April 2022. 14 observational studies met the criteria for inclusion in the meta-analysis, including 2840 cases of severe illness and death from COVID-19. Categorical dose-relationship analysis showed that the risks of severe illness and mortality from COVID-19 were, respectively, 46% (risk ratio (RR): 0.54; confidence intervals (CIs): 0.41-0.68) and 59% (RR = 0.41; 95%CI: 0.23-0.58) lower for the highest dose of PA compared with the lowest dose of PA. The results of the continuous dose-response analysis show an inverse nonlinear relationship (P non-linearity < 0.05) between PA and both the risk of severe illness and mortality from COVID-19. For PA below 10 MET-h/week (MET-h/week: metabolic equivalent of task-hours/week), an increase of 4 MET-h/ week (1 h of moderate-intensity or 0.5 h of high-intensity PA) was associated with 8% and 11% reductions in the risk of severe illness and mortality from COVID-19. PA above 10 MET-h/week lowered the risk of severe illness and mortality from COVID-19 by 7% and 9%, respectively, for each 4 MET-h/week increase. Doses of WHOrecommended PA levels (10 MET-h/week) may be required for more substantial reductions in the risk of severe illness and mortality from COVID-19.
Appendix A. Supplementary data Supplementary data to this article can be found online at https://doi. org/10.1016/j.pmedr.2023.102130.
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