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 ...

All runners, according to a popular school of training thought, can be divided into two categories: slow-twitch and fast-twitch. Physiologically, this idea rests on pretty shaky ground. The old view ...

Most cells typically have one nucleus that holds its genomic DNA. Muscle fibers, however, are large, individual cells that contain many nuclei. Reporting in Nature Communications, scientists have used ...

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 ...

Tokyo, Japan – Researchers from Tokyo Metropolitan University have shown that the protein Musashi-2 (Msi2) plays a key role in the regulation of mass and metabolic processes in skeletal muscle. They ...

Targeting the right muscle fibers is key.

A muscle fiber consists of just one cell, but many nuclei. A team has now shown just how varied these nuclei are. The study can help us better understand muscle diseases such as Duchenne muscular ...

Here’s why some muscle groups respond faster (or slower) to strength training—and what you can do about it.

Add Yahoo as a preferred source to see more of our stories on Google. in the foreground, we see a woman wearing atheletic clothing and smiling as she lifts a dumbell off the ground while holding a ...