All adaptations are specific to the stimulus imposed. In general this means if you train heavy you get stronger, if your train fast you get more speed, if you train long you build stamina.
LVRT™ Rule#2: Reduce the LOAD not the speed.
The real advantage of EXOGEN™ and LVRT™ is the ability to provide specific, progressive resistance to maximal / actual sport speed activities. While there is some debate on the topic, reducing the speed of a desired movement teaches that movement to be slow and is contradictory to speed enhancement.
In general, you need to train at or near you’re desired speed to improve at that speed. If you feel the selected load is slowing the desired speed of motion down by more than 10-20% reduce the load, not the speed.
Once you can comfortably use the lighter load at the desired speed then progress to a higher load. With increments of 50-200grams you will have ample opportunity for this. In some cases progressions may come daily in a new program. Quickly you will realize why LVRT loading is measured in grams not kilograms. When it comes to optimal speed training - less is more.