Participants
The principal investigator recruited the participants among the residents of the PLUs. The inclusion criteria were being aged 65 or over, a permanent resident in a PLU, able to walk 10 m without human assistance and having given consent to participate in this study. The exclusion criteria were the presence of a medical contraindication, being bedridden or patients in terminal care. The participants were randomised by the principal investigator in the intervention group (IG) or in the control group (CG) using the option “random sample of cases” of IBM SPSS statistics software (Version 25).