Participants in this arm will receive one weekly session of progressive muscle relaxation over a 10-week period. Each session will last approximately 45 minutes and will include diaphragmatic breathing, Jacobson's progressive muscle relaxation technique, controlled breathing exercises, and a brief cooldown period. Sessions will be supervised by a trained physiotherapist.

Participants in this arm will receive a combined intervention consisting of one weekly session of progressive muscle relaxation and one weekly session of functional strength training over a 10-week period. Strength training sessions will focus on upper limb, lower limb, and core muscle groups using progressive resistance. Each session will last approximately 45 minutes and will be supervised by a trained physiotherapist.

Progressive muscle relaxation will be delivered in weekly supervised sessions over a 10-week period. Each session will last approximately 45 minutes and will include diaphragmatic breathing, systematic muscle contraction and relaxation following Jacobson's technique, controlled breathing exercises, and a brief cooldown period. The intervention will be administered by a trained physiotherapist in a group setting.

Frailty will be assessed using the Short Physical Performance Battery (SPPB) and handgrip strength measured with a hand dynamometer.

The SPPB includes balance, gait speed, and lower-limb strength components. The score is obtained by summing the results of three performance-based tests: balance, gait speed over 4 meters, and the five-times sit-to-stand chair test. The total score ranges from 0 to 12 points, where 0 represents the worst performance and 12 the best performance. Lower scores (generally <10) indicate frailty and increased risk of falls. Performance is classified as follows: 0-3 (disabled), 4-6 (frail), 7-9 (prefrail), and 10-12 (independent).

Handgrip strength will be measured using a hand dynamometer, and the absolute grip strength value will be recorded. The Fried frailty phenotype includes handgrip strength (dynamometry) as one of the five key criteria for identifying frailty in older adults. Cut-off values indicative of muscle weakness, adjusted for sex and body mass

Anxiety symptoms will be assessed using the Hamilton Anxiety Rating Scale (HAM-A), a validated clinician-rated questionnaire evaluating psychological and somatic anxiety symptoms. HAM-A is scored on a scale of 0 (not present) to 4 (severe), with a total score range of 0-56, where <17 indicates mild severity, 18-24 mild to moderate severity and 25-30 moderate to severe.

Adherence will be assessed by recording the number of sessions attended and the percentage of completed sessions for each participant.