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RETRACTION article

Front. Physiol., 06 February 2026

Sec. Exercise Physiology

Volume 17 - 2026 | https://doi.org/10.3389/fphys.2026.1793994

Retraction: The impact of COVID-19 and muscle fatigue on cardiorespiratory fitness and running kinetics in female recreational runners

This article is a retraction of:

  1. RETRACTED: The Impact of COVID-19 and Muscle Fatigue on Cardiorespiratory Fitness and Running Kinetics in Female Recreational Runners

    1. Read original article
Frontiers Editorial Office Frontiers Editorial Office*

A Retraction of the Original Research Article
The impact of COVID-19 and muscle fatigue on cardiorespiratory fitness and running kinetics in female recreational runners

by Jafarnezhadgero AA, Noroozi R, Fakhri E, Granacher U and Oliveira AS (2022). Front. Physiol. 13:942589. doi: 10.3389/fphys.2022.942589

Following publication, concerns were raised regarding the ethical approval procedure, recruitment, and methodology of the study that failed to adequately ensure the safety of previously hospitalised COVID-19 patients. An investigation was conducted in accordance with Frontiers’ policies.

The authors failed to provide a satisfactory explanation, and, as a result, the conclusions of the article have been deemed unreliable, the study has been found not to meet appropriate ethical standards, and the article has been retracted.

This retraction was approved by the Chief Editors of Frontiers in Physiology and the Chief Executive Editor of Frontiers. The authors disagree to this retraction.

Citation: Frontiers Editorial Office (2026) Retraction: The impact of COVID-19 and muscle fatigue on cardiorespiratory fitness and running kinetics in female recreational runners. Front. Physiol. 17:1793994. doi: 10.3389/fphys.2026.1793994

Received: 22 January 2026; Accepted: 22 January 2026;
Published: 06 February 2026.

Approved by:

Giuseppe D’Antona, University of Pavia, Italy

Copyright © 2026 Frontiers Editorial Office. This is an open-access article distributed under the terms of the Creative Commons Attribution License (CC BY). The use, distribution or reproduction in other forums is permitted, provided the original author(s) and the copyright owner(s) are credited and that the original publication in this journal is cited, in accordance with accepted academic practice. No use, distribution or reproduction is permitted which does not comply with these terms.

*Correspondence: Frontiers Editorial Office, cmVzZWFyY2guaW50ZWdyaXR5QGZyb250aWVyc2luLm9yZw==

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