"The benefits of eccentric contractions include muscle growth or hypertrophy…because they cause more microscopic muscle fiber ...

There are actually three phases of each rep: the concentric (the “up” portion), the eccentric (the “lowering” portion), and the isometric (the “holding” portion). You probably know this.

Recently, researchers set out to compare eccentric and concentric training to determine which yields more hypertrophy, which refers to an increase in muscle size. Does the eccentric phase really ...