Background: A decline in quality of life among older adults commonly occurs as a result of the aging process, which leads to reduced physical function, muscle weakness, and limited mobility. Sit-to-stand exercise is one form of exercise that can improve the functional capacity of older adults. Objective: This study aimed to determine the effect of sit-to-stand exercise on the quality of life of older adults. Methods: This study employed a pre-experimental design using a one-group pretest–posttest approach. A total of 17 participants were selected using purposive sampling. The intervention was administered for 6 weeks, three times per week. Quality of life was assessed using the WHOQOL-BREF questionnaire, and the data were analyzed using the paired t-test. Results: The results demonstrated an improvement in quality-of-life scores following the sit-to-stand exercise intervention. Statistical analysis yielded a p-value of 0.000 (p < 0.05), indicating a statistically significant effect of sit-to-stand exercise on the quality of life of older adults. Conclusion: Sit-to-stand exercise effectively improves the quality of life of older adults at Trenggalek Community Health Center and may serve as a simple and practical physiotherapy intervention for implementation in community healthcare services.
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