**5. Conclusions**

Ashwagandha supplementation might improve the VO2max in athlete and non-athlete people. The analyzed studies used oral administration of Ashwagandha which varied between 2 and 12 weeks with intakes between 300 to 1000 mg/day. Due to the limited number of studies included in this systematic review and meta-analysis, further research is needed to confirm the effects and the recommended dose.

**Author Contributions:** Conceptualization, J.P.-G., J.C.A. and D.C.-M.; methodology, J.P.-G., S.V., E.M.-N. and D.C.-M.; software, J.C.A., and D.C.-M.; formal analysis, J.P.-G., S.V., J.C.A., E.M.-N., and D.C.-M.; investigation, J.P.-G., S.V., J.C.A., E.M.-N., and D.C.-M.; data curation, J.P.-G., J.C.A. and S.V.; writing—original draft preparation, J.P.-G., S.V. and D.C.-M.; writing—review and editing, J.P.-G., S.V., J.C.A., E.M.-N. and D.C.-M.; supervision, J.P.-G., S.V., J.C.A., E.M.-N. and D.C.-M. All authors have read and agreed to the published version of the manuscript.

**Funding:** S.V. is supported by a grant from the regional Department of Economy and Infrastructure of the Government of Extremadura and European Social Fund (PD16008).

**Conflicts of Interest:** The authors declare no conflict of interest.
