What is the effect of aging on muscle strength?

The effect of aging on muscle strength is characterized by weakness and fatigue. As individuals age, there is a natural decline in muscle mass and strength due to several factors, including hormonal changes, a decrease in physical activity, and possible nutritional deficiencies. This process, known as sarcopenia, results in a reduction in the size and number of muscle fibers, particularly the fast-twitch fibers that are crucial for strength and power activities.

Additionally, older adults often experience increased fatigue because their muscles may require more time to recover from exertion, and there may be changes in the efficiency of muscle metabolism. This overall decline in muscle function can impact everyday activities, leading to an increased risk of falls and a decreased quality of life.

Therefore, the correct understanding of the impact of aging on muscle strength aligns with the recognition that older adults commonly experience weakness and fatigue as their body undergoes these significant physiological changes.