Which type of muscle fibers typically experience reduced mass with aging?

Understand the Problem

The question is asking about the specific type of muscle fibers that tend to lose mass as a person ages. The options provided suggest a focus on different muscle fiber types and their characteristics in relation to aging.

More Information

Type II muscle fibers, also known as fast-twitch fibers, decline significantly with age, which contributes to the loss of muscle mass and strength in older adults. This reduction impacts the ability to perform rapid and forceful movements.

Tips

A common mistake is confusing type II fibers with type I fibers (slow-twitch), which are more resistant to fatigue and do not suffer as much age-related atrophy.

Sources

• Muscle Function: Effects of Aging - Physiopedia - physio-pedia.com
• Review The age-related loss of skeletal muscle mass and function - sciencedirect.com