Concentric training movements involve positive resistance to forces, for example when pulling upward during a pull-up, or when pushing up during a push-up. Either way, the primary muscles always ...

What Are Eccentric and Concentric Contractions? Eccentric contractions occur when a muscle lengthens under load, such as lowering a dumbbell during a biceps curl. Concentric contractions happen when ...

QUESTION: I have been doing the same workout for a year but wouldn’t mind mixing it up a bit. Any thoughts? ANSWER: It’s been said that the best workout for each of us is the one we will do. For some, ...