The Pendlay WOD is programmed in 8-week training cycles. I do it this way because this length of cycle works the best for the most people. Training cycles work for a simple reason. Neither the human body nor the human psyche react well to monotony. We thrive on change, particularly when it comes to stress. So we constantly change the stressor. On the competition weightlifting movements, every week brings a change in the intensity and the volume. We also do variations of the weightlifting movements such as the power variations, or lifts from the knee or the hip. While the competition movements are done weekly with moderate intensity, we do the variations with high intensity, often going right up to our maximum. We can do this indefinitely because we change which variation we are using every week or two. The combination of doing the actual competition lifts with moderate intensity and different variations with maximal intensity while regularly changing the variation works. But it is only half the story, or actually 1/3 of the story. Doing only the snatch and clean and jerk doesn’t make an effective program.
As amazing as an exercise like the snatch is, it is not all that effective for building maximal strength and muscle. For that, we have to do movements like the squat and deadlift. Ideally the exercises that we use to build strength and muscle will work the body through the same or similar ranges of motion as the weightlifting movements but will use much heavier weight and therefore slower bar speed. The exercises that work the best are the back squat, the deadlift, and the front squat. The use of training cycles is even more important for continual progress on the squat and deadlift than it is for the snatch and clean. Each 8-week cycle on the Pendlay WOD moves the athlete from higher volume training on the squat and deadlift at the start, to lower volume and higher intensity by week 8. Each 8-week cycle should end with PR sets in the squat and deadlift as well as PR lifts in the snatch and clean and jerk.
The combination of moderate competition lifts and maximal lifts on a variety of variations is 1/3 of story, an effective strength program is another third, and the final piece of the puzzle is something that few weightlifters like to do. Assistance exercises like glute-hamstring raises, back extensions, hip extensions and other similar things done for sets of 10 at the end of every training session. No one likes to do these exercises. No one looks forward to their time on the GHR. But just because they are not fun doesn’t mean we don’t do them. Exercises like the back extension and hip extension build muscle and strength where we need it most, in the back, hips, and hamstrings. They also build tolerance to workload and enable an athlete to handle MORE squats, snatches, and clean and jerks. With each successive 8-week cycle you get stronger in the snatch and clean, stronger in the squat and deadlift, as well as in better shape and able to handle a higher workload.