Multidomain interventions for sarcopenia and cognitive flexibility in older adults for promoting healthy aging: a systematic review and meta-analysis of randomized controlled trials.

"Declarations Conflict of interestThe authors declare that they have no competing interests. Conflict of interest The authors declare that they have no competing interests."

"Funding Funding for open access publishing: Universidad de Almería/CBUA. No financial assistance from governmental, corporate, or non-profit entities was used to conduct the study described in the manuscript nor to assist in its preparation."

"This study was conducted in line with the PERSiST guidelines for systematic reviews [], a sports and exercise medicine alignment of the 27 PRISMA statement []. It was also prospectively registered in the international database for reviews from the National Institute for Health Research (NIHR), Prospero, under the reference number (CRD42023400224). Availability of data and materials: Annex A in appendices shows where the information can be found.: Pre-register of the study: the study was uploaded to Prospero with the ID number (CRD42023400224)."