<p>1. Introduction<br>&nbsp; 1.1 Background<br>&nbsp; 1.2 Significance of the Study<br>&nbsp; 1.3 Research Objectives<br><br>2. Literature Review<br>&nbsp; 2.1 Age-Related Changes in Muscle Mass<br>&nbsp; &nbsp; &nbsp; 2.1.1 Sarcopenia: Definition and Prevalence<br>&nbsp; &nbsp; &nbsp; 2.1.2 Factors Contributing to Age-Related Muscle Loss<br>&nbsp; 2.2 Age-Related Changes in Muscle Strength<br>&nbsp; &nbsp; &nbsp; 2.2.1 Muscle Strength Decline with Aging<br>&nbsp; &nbsp; &nbsp; 2.2.2 Factors Influencing Age-Related Muscle Weakness<br>&nbsp; 2.3 Impact of Muscle Mass and Strength on Functional Capacity<br>&nbsp; &nbsp; &nbsp; 2.3.1 Effects on Mobility and Balance<br>&nbsp; &nbsp; &nbsp; 2.3.2 Implications for Activities of Daily Living<br>&nbsp; 2.4 Mechanisms Underlying Age-Related Muscle Decline<br>&nbsp; &nbsp; &nbsp; 2.4.1 Changes in Muscle Fiber Composition<br>&nbsp; &nbsp; &nbsp; 2.4.2 Hormonal and Metabolic Factors<br>&nbsp; &nbsp; &nbsp; 2.4.3 Inflammatory Processes<br>&nbsp; 2.5 Assessment Methods for Muscle Mass and Strength<br>&nbsp; &nbsp; &nbsp; 2.5.1 Dual-Energy X-ray Absorptiometry (DXA)<br>&nbsp; &nbsp; &nbsp; 2.5.2 Handgrip Strength Testing<br>&nbsp; &nbsp; &nbsp; 2.5.3 Other Functional Tests<br><br>3. Methodology<br>&nbsp; 3.1 Study Design<br>&nbsp; 3.2 Selection Criteria for Literature Review<br>&nbsp; 3.3 Data Collection and Analysis<br>&nbsp; 3.4 Limitations<br><br>4. Results and Discussion<br>&nbsp; 4.1 Overview of Studies Included in the Review<br>&nbsp; 4.2 Age-Related Changes in Muscle Mass<br>&nbsp; 4.3 Age-Related Changes in Muscle Strength<br>&nbsp; 4.4 Relationship between Muscle Mass, Strength, and Functional Capacity<br>&nbsp; 4.5 Underlying Mechanisms of Age-Related Muscle Decline<br><br>5. Interventions to Mitigate Age-Related Muscle Decline<br>&nbsp; 5.1 Resistance Training and Exercise Programs<br>&nbsp; 5.2 Nutritional Interventions<br>&nbsp; 5.3 Hormonal and Pharmacological Interventions<br>&nbsp; 5.4 Other Potential Strategies<br></p>