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Authors
Polo-Ferrero, Luis https://orcid.org/0000-0002-8349-0441
Méndez-Sánchez, Roberto
Martín-Vallejo, Javier
Torres-Alonso, Javier
Carrera-Villegas, Marta Beatriz
Barbero-Iglesias, Fausto J.
Cruz-Jentoft, Alfonso J.
Montero-Errasquín, Beatriz
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Funding
Funding for this research was provided by:
Universidad de Salamanca (L9AB)
Universidad de Salamanca
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Article History
Received: 19 November 2025
Revised: 22 December 2025
Accepted: 30 December 2025
First Online: 26 February 2026
Declarations
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: The authors declare no conflicts of interest. The manufacturer of the InGrip dynamometer had no participation in the conception or design of the study; the acquisition, analysis, or interpretation of data; the writing of the manuscript; or the decision to publish the results.
: This study was conducted in accordance with the principles outlined in the Declaration of Helsinki and received approval from the Comité de Ética de la Investigación con Medicamentos del Área de Salud de Salamanca (PI code: ICPS-I 24 2050). Prior to participation, all individuals were informed about the study's objectives, as well as the potential risks and benefits associated with the procedures involved. Informed consent was obtained from all participants. Furthermore, participant confidentiality was strictly maintained throughout the study, in compliance with the provisions of Organic Law 3/2018 of December 5 on the Protection of Personal Data and Guarantee of Digital Rights, Law 14/2007 of July 3 on Biomedical Research, and Regulation (EU) 2016/679 of the European Parliament and of the Council of April 27, 2016 (RGPD).
: Informed consent was obtained from all individual participants included in the study.
