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Glossary AB CD EF GH IJ KL MN OP QR ST UV WX YZ Slow Twitch Muscle Fiber Also known as Type I muscle fiber. This type of muscle fiber is smaller in size and has less force generating capability than fast twitch muscle fibers. It is also less predisposed to hypertrophy. However, slow twitch is richer in myoglobin and mitochondria, which allows it to use aerobic means for energy thus resulting in better endurance. |