10/19/2026
If you’re going to incorporate partial reps into your training, lengthened partials are generally a much better option for hypertrophy than shortened partials.
Lengthened partials focus on the portion of the movement where the muscle is stretched under load, which can provide a powerful stimulus for muscle growth.
Instead of performing partial reps only in the contracted position, where the muscle is shortened, prioritize the portion of the rep that challenges the muscle in its lengthened position.
While full range of motion should still be a staple of your training, research suggests that training at longer muscle lengths can be particularly beneficial for hypertrophy.
Train the stretch, control the negative, and stop wasting reps where the muscle has less growth potential!