Muscle cramps hurt like crazy in the moment. What causes them to occur in the first place, other than a lack of electrolytes?

Severe cramps in your legs, especially at night, are uncontrolled spasms in the muscles of your legs which can be unbearable sometimes. Also known as charley horses – these cramps typically ...

Objectives: To examine the effects of fatigue induced by maximal intensity exercise at different velocities on subsequent torque-velocity relations in muscle. Methods: Ten men (mean (SD ... Concentric ...

Quadriceps isometric strength of each leg was measured at a knee joint angle of 1.57 rad (90 ... The strength gains were limited to the longer muscle lengths despite training over the full range of ...

Similarly, up to 1 in 2 people who are pregnant experience leg cramps, mostly during the third trimester. Athletes may experience charley horses more often because of muscle fatigue or overuse.