Eccentric contractions essentially act as a braking mechanism.
Many individuals may even manifest eccentricities consciously and deliberately, in an attempt to differentiate themselves from societal norms or enhance a sense of inimitable identity; given the overwhelmingly positive stereotypes at least in pop culture and especially with fictional characters often associated with eccentricity, detailed above, certain individuals seek to be associated with this sort of character type.
You know lowering your body down then pushing it back up is considered one rep, but both of those steps—known as eccentric and concentric movements—are equally important.
The wheels turn on axle-arms which project eccentrically from the ends of an axle passing through both cheeks; when the axle is turned the axle-arms carry the wheels up or down; when at the lowest point the weight of the carriage is borne by the wheels, and the system moves on rolling friction; the wheels are then said to be in gear; when out of gear, or at their highest points, the wheels do not touch the rails or platform plates, but the cheeks rest on them, and the carriage moves upon sliding friction.
The contraction is just strong enough to put the brakes on the lengthening of the muscle.
And eccentric training also strengthens your body's connective tissue think of it like a web throughout your body that supports and protects your muscles and organs , published in 2016 in the Journal of Applied Physiology found.