Which types of resistance training involves exercises where the weight lifted does not change through the lifting and lowering phase?

The type of resistance training that involves exercises where the weight lifted does not change through the lifting and lowering phase is Isokinetics. In isokinetic exercises, the speed of movement is kept constant throughout the entire range of motion, typically using specialized equipment. This means that regardless of how much effort is applied, the resistance remains the same throughout the contraction.

In contrast, dynamic constant external resistance training allows for variability in resistance due to gravity and the positioning of the body. Plyometric training focuses on explosive movements and stretches of the muscles rather than maintaining a constant resistance. Free weight training involves lifting weights that can change based on the individual's ability to lift, control, or stabilize the weight. Therefore, isokinetics specifically represents a form of resistance training that maintains a consistent resistance throughout both phases of the exercise.