What is the result of muscular atrophy?

Muscular atrophy refers to the gradual wasting away or decrease in the size of muscle fibers, which leads to a reduction in muscle strength and functionality. This condition can arise from various factors, including disuse of muscles due to inactivity, malnutrition, or certain medical conditions. As the muscles shrink in size, they also lose strength, making it more challenging for the individual to perform physical activities.

In context, increased muscle strength, muscle enlargement, and improved muscle tone are all associated with muscle development or hypertrophy rather than atrophy. Therefore, the correct response highlights the primary consequences of muscular atrophy: muscle weakness and a reduction in size.