This study aims to evaluate whether a 12-week program combining oral nutritional supplements (ONS) with resistance exercises can improve nutritional status, muscle strength, and physical mobility in hospitalized older adults with frailty. The investigators will enroll about 120 frail older inpatients in a single-group design. All participants will receive 90 grams of ONS daily and undergo supervised resistance training five times per week for 12 weeks. Nutrition, physical function, and frailty levels will be assessed before and after the intervention. Baseline characteristics will be examined as potential predictors of intervention response.
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Fried frailty phenotype (FP) score
Timeframe: Baseline; At 12 weeks post-intervention
short physical performance battery (SPPB) score
Timeframe: Baseline; At 12 weeks post-intervention