JMIRxMed JMIRx Med JMIRx Med 2563-6316 JMIR Publications Toronto, Canada v3i2e38731 10.2196/38731 Peer-Review Report Peer-Review Report Peer Review of “COVID-19 Return to Sport: NFL Injury Prevalence Analysis” Meinert Edward Pereira Felicianus 1 https://orcid.org/0000-0003-0711-3078 Shaheed Benazir Bhutto Dewan University Karachi City Pakistan Corresponding Author: Felicianus Pereira f.pereira93@hotmail.com Apr-Jun 2022 22 4 2022 3 2 e38731 13 4 2022 13 4 2022 ©Felicianus Pereira. Originally published in JMIRx Med (https://med.jmirx.org), 22.04.2022. 2022

This is an open-access article distributed under the terms of the Creative Commons Attribution License (https://creativecommons.org/licenses/by/4.0/), which permits unrestricted use, distribution, and reproduction in any medium, provided the original work, first published in JMIRx Med, is properly cited. The complete bibliographic information, a link to the original publication on https://med.jmirx.org/, as well as this copyright and license information must be included.

 https://www.medrxiv.org/content/10.1101/2021.12.16.21267811v1 https://preprints.jmir.org/preprint/35862 https://med.jmirx.org/2022/2/e38755/ https://med.jmirx.org/2022/2/e35862/ COVID-19 sport injury prevalence cause data statistics pain training practice physiology adaptation

This is a peer-review report submitted for the paper “COVID-19 Return to Sport: NFL Injury Prevalence Analysis”

Round 1 General Comments

This paper [1] has focused on a relevant topic in sports. Athletes are at high risk of injury when they have not performed required training, or do not have a solid training base (as highlighted in the periodization plan).

 Specific Comments

Was ethical approval taken to conduct this study?

Regarding injuries suffered by athletes, were contact injuries accounted for? (As this is a possible confounding variable in this study.)

None declared.

 Puga TB Schafer J Agbedanu PN Treffer K COVID-19 Return to Sport: NFL Injury Prevalence Analysis JMIRx Med 2022 3 2 e35862