In the study, the researchers used a band load that represented 30% of each participant’s 1RM, subtracting that same amount from the weight lifted.
This has the effect of increasing the resistance toward the end of the concentric phase of the lift.
VRT is a relatively new aspect of training, and as such has not been well studied.
Increasing concentric resistance creates a need to accelerate continuously.
Variable Resistance Training (VRT), sometimes called accommodating resistance, is a type of training that I’ve been interested in for a while now, and which has been a part of the powerlifting community for even longer.
VRT is what you’re seeing when a lifter adds elastic bands or chains to the bar before a lift.