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. 2021 Feb 11;6(1):20. doi: 10.3390/jfmk6010020

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© 2021 by the authors.

Licensee MDPI, Basel, Switzerland. This article is an open access article distributed under the terms and conditions of the Creative Commons Attribution (CC BY) license (http://creativecommons.org/licenses/by/4.0/).

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Forest plot depicting the standardized mean differences from the meta-analysis of studies comparing groups with Ashwagandha or placebo on cardiorespiratory fitness. Colored squares represent the d_unb for individual trials, while colored and green polygons depict the meta-analytic d_unb for the indicated subgroups and for the overall (total) results, respectively. Horizontal lines represent the 95% confidence intervals for the data. Hb: blood hemoglobin concentration; VO_2max: maximum oxygen uptake; WS330: Withania somnifera 330 mg; WS500: Withania somnifera 500 mg.