More myoglobin is typically found in type 2X skeletal muscle fibers.

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More myoglobin is typically found in type 1 skeletal muscle fibers, also known as slow-twitch fibers, which are used for endurance activities. Type 2X fibers, also known as fast-twitch glycolytic fibers, have less myoglobin and are used for explosive activities. Type 2A fibers, also known as fast-twitch oxidative fibers, have an intermediate amount of myoglobin.

More Myoglobin Is Typically Found in Type 2X Skeletal Muscle