Vitamin D and resistance training programs to improve physical function in community-dwelling older adults

INTERVENTION: Intervention type:BEHAVIOUR. Intervention1:vitamin D and resistance training programs, Dose form:NOT APPLICABLE, Route of administration:NOT APPLICABLE , intended dose regimen:None. Control intervention1:none, Dose form:NOT APPLICABLE, Route of administration:NOT APPLICABLE , Intended dose regimen:none. CONDITION: improve physical function PRIMARY OUTCOME: physical function. Timepoint:before and after the 6‐months intervention period. SECONDARY OUTCOME: muscle mass. Timepoint: before and after the 3‐months intervention period. INCLUSION CRITERIA: Community‐dwelling older adults aged 65 and older