Any exercise in which muscles are repeatedly and rapidly stretched (“loaded”) and then contracted (as in jumping high off the ground or in push-ups with a clap between them). The aim of plyometrics is to improve muscle power.
Premenstrual dysphoric disorder.
Stands for progressive multifocal leukoencephalopathy, a rapidly progressive, often fatal viral infection of the brain. Commonly abbreviated as PML. PML is believed to be due to the Jacob-Creutzfeldt (JC) papovavirus. The virus infects oligodendrocytes (support cells in the brain). The signs and symptoms of PML include headaches, memory loss, changes in mental status, speech and […]
- PMR (polymyalgia rheumatica)
A disorder of the muscles and joints of older persons characterized by pain and stiffness, affecting both sides of the body, and involving the shoulders, arms, neck, and buttock areas.