This discovery changes the way scientists think about aging. It suggests that part of what we call age-related weakness may actually be a communication problem between the brain and the muscles. As ...

PAF causes strong contractions—especially in the muscles of the esophagus and the stomach’s upper region (called the gastric fundus). In other parts of the intestine, such as the small intestine and ...

The brain controls movement by sending electrical messages through nerves to the muscles. When this communication becomes weaker with age, the muscles may not respond with full strength even if they ...

A new study suggests that muscle strength, particularly grip strength, is associated with longevity and could offer a practical screening tool for aging-related risk.

A gene known as ACTN3 (α-actinin-3) has earned the nickname “the gene for speed,” and it may have an influence on how androgens work through the androgen receptor to maintain muscle mass. Research has ...

Depending on the cause, physical therapy, massage, stretching, yoga, relaxation, heat, or other therapies may help release chronically tight muscles. Various factors can cause chronically tight or ...

Looking for the right hue to paint your weight room? Try red--it may well enhance your performance. A new study by psychologists says that seeing the color red leads humans to react more quickly and ...

Have you ever experienced a momentary loss in strength when you laugh? Many people also express their lack of motor control for a few moments after laughing or experiencing extreme emotions.