This study was performed in line with the principles of the Declaration of Helsinki. Approval was granted by the local University Ethics Committee (CAAE: 79748517.5.0000.5347), as well as the Ethics Committee from the State Health Department (CAAE: 79748517.5.3002.5312) and from the City Health Department (CAAE: 79748517.5.3001.5338).

This study was performed in line with the STROBE Guidelines for observational studies.

Informed consent was obtained from all individual participants or their legal representatives included in the study.

The datasets generated during the current study are available from the corresponding author on reasonable request.

Disclosure of potential conflicts of interest: The authors have no conflict of interest in relation to the present scientific paper.

All authors contributed to the study conception and design. Material preparation, data collection and analysis were performed by Mikel L. Sáez de Asteasu, Eduarda Blanco-Rambo and Caroline Pietta-Dias. The first draft of the manuscript was written by Mikel L. Sáez de Asteasu and Eduardo Lusa Cadore. All authors commented on previous versions of the manuscript. All authors read and approved the final manuscript.

How to cite this article: M.L. Sáez de Asteasu, E.L. Cadore, T. Steffens, et al. Reduced Handgrip Strength Is Associated with 1 Year-Mortality in Brazilian Frail Nonagenarians and Centenarians. J Frailty Aging 2023; https://doi.org/10.14283/jfa.2023.21