Introduction: The processes of aging and obesity have significant impacts on human health and well-being. Understanding the effects of aging on muscle function and performance, as well as the physiological mechanisms underlying the development of obesity, is crucial for addressing these complex issues. Objectives: The main objective of the study is to find the effect of aging in muscle function and performance or the physiological mechanism underlying the development of obesity. Material and methods: This descriptive study was conducted from June 2022 till December 2022 in public hospital of Karachi.A total of 85 participants were recruited for this study. The participants ranged in age from 50 to 70 years and were selected from the local community. Muscle function and performance were assessed using a standardized battery of tests. These included measurements of muscle strength, power, and functional mobility. Muscle strength was evaluated using a dynamometer to measure isometric strength of the upper and lower extremities. Results: Data were collected from 85 obese patients. There were 40 female and 45 male participants with mean age of 54.3±9.78 years. The participants had a mean BMI of 27.4± 3.1kg/m² indicating that, on average, they were classified as overweight. Participants had a mean height of 167.5±6.8 cm and mean weight was 75.2±9.6 kg. The participants demonstrated a mean grip strength of 36.8±4.5 kg and the mean leg power was measured at 350±45.6 Watts, indicating the average power output of their legs during assessment. Conclusion: It is concluded that the effects of aging on muscle function and performance as well as the physiological mechanisms underlying the development of obesity have important implications for overall health and well-being.Aging is associated with a decline in muscle mass, strength, power, and functional mobility.

The processes of aging and obesity have significant impacts on human health and well-being.