Are supersets - moving from one exercise to another with as little rest as possible – all they’re cut up to be? If you peruse some of the better bodybuilding magazines or read interviews with some of the best champions of the sport, past and present, you’ll find supersets to be a popular technique used to (supposedly) increase muscle growth.
How effective is the technique? I’d say on the whole, not extremely effective and at the very least, over rated. Surprised? Don’t be, though you probably need some clarity on what really makes muscles grow before you can understand how on earth, after all these years, super sets can be deemed, at best, to be only mildly effective.
Principle 1: It’s All About The Load
Muscles grow in response to loads. The more load you place on a muscle, the greater number of individual muscles fibers come into play in opposing the load. Quite simply, the greater number of muscle fibers that come into play - sometimes called "recruited"- the better your growth, progress and gains.
Many are under the impression "load" means sets, reps and exercise angles, but in reality, load is best determined by nothing more than the "weight" used. That is, 200 pounds is twice the load of 100 pounds. If you use 200 pounds for leg extensions, the load placed on the quads is twice that of 100 pounds. And in growth terms, we can generalize things a bit by saying twice the muscle fibers come into play to push and resist that 200 pounds than 100 pounds.
Repeat this mantra: The Greater the load, the greater the muscle growth. That’s the main reason Bev Francis revolutionized female bodybuilding. Her strength was stunning, often squatting 315 pounds for 10 reps! Likewise, we have Ronnie Coleman who just may be the strongest man on earth. How’s he built all that muscle? With over load. He’s relied on basic exercises using the heaviest weights possible – of course with the best form possible – to maximize muscle recruitment. Big weights, heavy weights are the foundation for growth and muscle overload. In response to overloading muscles, they respond by enlarging.
Principle 2: Gotta Be in the Right Rep Range
This one drives me crazy. When it comes to reps, you have to know what range is best for growth. Before determining that, let’s eliminate the rep ranges that are not effective in stimulating muscle growth.
First off, understand different rep ranges impart unique adaptations within muscles. Low rep ranges yield changes in strength, often with little changes in muscle mass. In other words, you can get stronger – dramatically stronger, and never gain mass. Take power lifters or Olympic Lifters as an example. They rely on lower rep ranges, generally fewer than 6 reps, and very often 2-4 reps, in order to impact strength. They use a specific rep range, anything with 5 reps and below, and the result is more strength.
Have you ever been to a power lifting meet? You’ll find some guys - and gals - with virtually no muscle, at least compared to a bodybuilder, lifting insane amounts of weight. The reason: by sticking with exclusively lower reps, the physical adaptation is primarily added strength without a corresponding increase in muscle mass. So while heavy weights – or "load" is the foundation for recruiting the maximum amount of muscle fibers, the rep range helps determine what happens with your body.
If you train with low reps, you get stronger and if you target the general area of 6 to 12 reps, you also add strength but the primary adaptation is added size. In order to grow, you have to focus on the load – heavy weights – in the right rep range and the ideal rep range that triggers an increase in size appears to be somewhere from 6 reps and no higher than 12.
Let’s discuss "higher reps" which I refer to any set employing 12 or more repetitions. The adaptation to 12 reps and higher is a gray area, though many refer to the range as muscle endurance. With muscle endurance, the adaptation is not strength or size, but an improved efficiency at performing reps. In other words, by hitting 12, 15 and 20 (or more reps) the muscles adapt by becoming better at doing higher reps.
Pain receptors for lactic acid, a by product of high rep training, generally re-set themselves higher, lactic acid is cleared more readily, the body becomes a little more efficient at breaking down glycogen to use as fuel, but, you don’t get bigger. In my experience, the only individual who will grow from higher reps is the genetic freak, the anabolic steroid user (they grow from anything) and the person who is a complete novice as any training stimulus that is brand new will result in mild additions of muscle mass. For the rest of us, high reps are a dead end.
Where do super sets fit in? They violate the 12 rep rule, meaning when you move from barbell curls to hammer curls and hit 10 reps on the first exercise and 10 on the second – it might feel like it’s doing something – but you’re better off not super setting and using a heavier weight on barbell curls in the 6 to 12 rep range failing somewhere in that range, rather than super-setting with a less than maximum load.
For growth; go with straight sets, use heavy weight and maintain the right rep range. The other bothersome part of supersets is the fact that they create so much lactic acid- more so than straight 6-12 rep sets – that local fatigue within the muscle further prevents you from using an appropriate load.
Supersets "burn" a muscle and the burn often short circuits maximal muscle contraction and force production. In other words, the burn inhibits your muscles from contracting as hard or as forcefully as possible. Lastly, supersets always downgrade your load selection. For example: if you can use 120 pounds on barbell curls for 8 reps, what weight will you choose if you pre-plan to create a superset using barbell curls followed by hammer curls.
Knowing you have to do around 8 reps on barbell curls followed by another 8 or more on hammer curls – and you know you have to ‘save something" for hammers, you’ll likely lower the load on the first exercise (barbell curls) to 70 or 80 pounds. If load determines muscle fiber recruitment, you’re already undermining your growth potential by choosing a sub-par weight to influence growth.
In closing, I’ll expect a deluge of testimonials challenging the idea that super-sets are overrated. That’s ok. I’ll wait for the logical explanation outside of the testimony that so and so used them and won the Arnold Classic.
Written by Chris Aceto





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