What is the effect of atrophy on muscle tissue?

Atrophy refers to the reduction in size and strength of muscle tissue as a result of disuse, aging, or disease. When muscles are not used regularly, such as during prolonged immobilization or inactivity, the fibers decrease in size and number, leading to a notable decrease in overall muscle mass and strength. This loss occurs because the body begins to break down muscle proteins and reduces the synthesis of new proteins in response to decreased functional demand.

Consequently, atrophy entails a significant decline in both the size and functional capacity of muscles, impacting activities that require muscular strength and endurance. This process contrasts with the other choices, which either imply an increase in muscle attributes or suggest that muscle functionality remains unchanged despite atrophy, which is not the case. Thus, the correct answer accurately describes the negative impact of atrophy on muscle tissue.