As people age, muscles naturally lose mass and strength, a condition known as sarcopenia. The decline can make everyday ...

This genetic model suggests otherwise, indicating that coupled gating or other mechanical interactions, rather than CICR, drive activation of uncoupled RyR1 channels. Interestingly, the researchers ...

Researchers have identified the role of the large Maf transcription factor family in regulating fast twitch muscle fibers. A mouse model lacking Maf expression in the skeletal muscles exhibited a ...

Fast-twitch fibers help with explosive movements like sprinting and weight lifting. Genetics and training influence the distribution of fast-twitch and slow-twitch muscle fibers. Doing strength ...

Most fitness-minded people have probably heard of fast- and slow-twitch muscle fibers. However, the distinction can be somewhat mysterious, especially in the context of understanding how it relates to ...

Supplementing a single protein found in the spinal cord could help prevent symptoms of Lou Gehrig's disease, according to a new study. Researchers found high levels of the protein -- called mitofusion ...

If your fitness goal is to up the ante on endurance, pack more power into your sprint, or supercharge your strength gains in the gym, it’s worth exploring – what are the different muscle fiber types?