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Acute influence of mixed creatine hydrochloride and caffeine supplementation on serum levels of testosterone and cortisol, repetition sustainability and resistance exercise volume

Crossref DOI link: https://doi.org/10.1007/s11332-026-01660-6

Published Online: 2026-02-04

Published Print: 2026-03

Update policy: https://doi.org/10.1007/springer_crossmark_policy

Authors

Ramezanzadeh, Masoud https://orcid.org/0009-0006-5795-4229
Arazi, Hamid https://orcid.org/0000-0002-1594-6515
Saidie, Payam https://orcid.org/0000-0001-7325-9484
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Text and Data Mining valid from 2026-02-04

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Article History

Received: 18 April 2024

Revised: 16 November 2025

Accepted: 21 January 2026

First Online: 4 February 2026

Declarations

:

: The authors declare no competing interests.

: The present study was conducted in compliance with ethical guidelines and principles, as outlined in the Helsinki Declaration, and was granted approval under the ethics code IR.SSRI.REC.1401.1767 by the Sport Sciences Research Institute. Before commencing the protocol, the aims and procedures of the research were explained to the participants. They were made aware of the potential risks and objectives of the study and provided their informed consent to participate.

: This manuscript has not been published elsewhere and not been submitted simultaneously for publication elsewhere.

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