Should You Try Pre-Exhaustion Training?
The HIT (High-Intensity Training) method suggests that you reach momentary muscular failure–that moment when you resist against the resistance, and for just a moment, you are incapable of overcoming the resistance. HIT is good for overcoming your strength plateaus to stimulate further muscle development beyond what you can reach with conventional training on your own, because you do relatively short sessions at high intensity. HIT provides lots of avenues to reach momentary muscular failure, depending on how you prefer to train and what equipment and training you have available. If you prefer to do more than one set of exercise for a muscle group, and want to fatigue more muscle fibers with each workout, Pre-Exhaustion Training may be a good choice for you.
What is Pre-Exhaustion Training?
The workout is simple: you begin the first set with a single-joint exercise, and follow up with a two-joint exercise. A good example of an exercise that only recruits one joint would be the leg extension, while a two-joint exercise would be the leg press. The leg extension and leg press both work your quads, but the leg press recruits from some other muscles as well. That’s the whole idea; you work one muscle group to momentary muscular failure, and then get a more work out of that muscle by performing a two-joint exercise on the same muscle group that recruits from some other non-fatigued muscles.
How Should You Do Pre-Exhaustion Training?
The first set of one-joint exercise you perform should be of a sufficient intensity to bring you to momentary muscle failure within 60 seconds, or about 10 repetitions that are controlled and in proper form. The follow up set should cause momentary muscle failure as well. This is tapping your anaerobic energy system and giving you two levels of muscle failure.
Here’s an example: if you perform two sets of bench presses with the same resistance, you activate the same pectoralis major muscle fibers twice. This means that you work longer, but you don’t actually necessarily work harder–you just work the same muscle fibers more, rather than working more muscle fibers. Now, if you were to perform a set of chest fly followed immediately by a set of bench press, you would be able to further fatigue the pectoralis major. Performing the initial chest fly would lead to momentarily muscle failure and prevent you from doing more chest flies. When you follow up with the bench press, you recruit assistance from your fresh triceps, which allows your fatigued pectoralis major to work even harder and get a deeper fatigue.
What Pre-Exhaustion Exercises Go Together?
Remember, you want to target the same muscle groups with a single joint, followed by a two-joint exercise.
Here is a list of good pre-exhaustion exercises:
- Quadriceps: Perform the Leg extension, followed by the leg press
- Hamstrings: Perform the leg curl, followed by the leg press
- Deltoids: Perform the lateral raise, followed by the overhead press
- Latissimus dorsi: Perform the super pullover or behind-the-neck, followed by pulldown or chin-up
- Biceps: Perform the preacher curl followed by the chin-up
- Triceps: Perform the triceps extension followed by the bar-dip
To learn more about pre-exhaustion exercise or the HIT method, talk to a qualified trainer at Vertex Fitness.