- Muscle cells, also known as myocytes, are specialized cells designed for contraction and force production. Skeletal Muscle Cells: These cells are long, cylindrical, and have a striated (or striped) ...

When a car accident or athletic injury destroys more than 20% of a muscle's mass, the body faces a problem it often can't ...

For decades, scientists believed that muscle fiber typology was mostly set at birth—some people were built for speed, others for endurance. However, a 2018 study led by Andrew Galpin of California ...

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 ...

In humans, the heart is the first functional organ to develop, starting to beat by four weeks after conception. During the development, the heart grows an intricate and complex network of muscle ...

Does protein build muscle? The answer to this question is a resounding, ‘yes’. Muscle tissue is composed of a repeating structure of two protein filaments: myosin and actin. Myosin and actin filaments ...

A person's flexibility is determined by many factors, including the structure of their joints, length of their muscle fibers and suppleness of their connective tissues. When you purchase through links ...

When you picture different athletes—marathon runners, gymnasts, and Olympic weightlifters, for example—you likely categorize them instinctively by their height, size, and build. But the differences in ...

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 ...

Muscle knots are highly irritated muscle fibers that have tightened into a ball in one area of your muscle. These painful, tender spots can feel sore and often occur in your upper back, shoulders, or ...