“It’s simply muscle pump, but in your forearms,” 4Arm Strong founder Lee Ramage explains. According to cycle-racing writer Heather McCoy in an article for Cycle World, “arm pump” is the term used to describe chronic exertional compartment syndrome (CECS).
What is tennis elbow? Elbow tendinitis, medically dubbed lateral epicondylitis, is commonly referred to as tennis elbow. Tennis elbow is “a painful condition of the elbow caused by overuse,” according to an article on Ortho Info.
Arm pump is simply the result of too much blood in a confined area. When we move our hand and wrist in a repetitive motion, or push and pull an object, we can experience tightness in the forearm and a loss of grip strength. Most people recognize this as arm pump.
These injuries can occur doing an array of activities and do not always occur playing tennis or golf. When the muscles and tendons in front of the elbow become overused, they tend to shorten and become fibrotic (stiff and brittle.)
There is evidence that a precursor to the Ulnar Collateral Ligament tear (Tommy John) is unhealthy forearm flexor muscles. Years of throwing a baseball will shorten this muscle group, until these shortened muscles become fibrotic...
Stretching the forearm, specifically extending the wrist by pulling the thumb can create a Median Nerve release. Doing this stretch with the 4Arm Strong can be far more effective then stretching without it.