Changing up Your Rep Scheme

If you seek out nearly any fitness-related website for information regarding rep schemes, you'll see something like this:

• For size, do 3-4 sets of 8-12 repetitions
• For strength, do multiple sets of 5 of fewer repetitions at a heavy weight
• For muscular endurance, do sets of 20 or more repetitions

While this is, generally satisfactory advice, I want to delve a little bit more into this topic.

First of all, genetics play a big factor in hypertrophy (muscle growth). Everyone responds differently to certain types of training. Every person has a different distribution of type I (slow twitch) and type IIa/b (fast twitch) fibers. Renowned strength coach Charles Poliquin notes, for example:

"It should be noted that the triceps are more universally fast-twitch dominant, while there is more variation in fiber-type composition in the biceps. This example demonstrates why training programs should take each individual’s personal characteristics into consideration. This is true in terms of both exercise selection and especially the volume and intensity of the workload, since individuals and specific muscles that are either fast-twitch or slow-twitch dominant will respond differently to a given level of volume and intensity. Understanding what you are dealing with will make your training programs significantly more effective."

Put simply, if someone has more fast twitch fibers in a given muscle, then he may need to train a bit differently than an individual with a higher percentage of slow twitch fibers in that muscle. Muscles with a greater percentage of fast twitch fibers benefit from fewer repetitions per set, whereas muscles that are predominantly slow twitch will grow easier with the use of high volume. This also means that there's a great deal of variance in the ideal amount of repetition volume depending on what body part you're training.

While 8-12 repetitions will help build mass, it's certainly not the only method. In fact, it's ideal to change up your split if you've hit a plateau.

If you're gonna bench press to failure, just please, don't follow his example.

One method I like to use on certain movements is to go to failure. There is no prescribed number of repetitions, necessarily, but you want to keep repeating the exercise until your muscles give out and can no longer move the weight. This is a great way to induce strength gains. Nóbrega and Libardi note that "when it comes to trained individuals, evidence shows greater increases in muscle strength after [high intensity resistance training] performed to muscle failure compared to no failure." Some people avoid missing lifts, but the evidence shows that these repetitions recruit more muscle activation, and, thus, lead to greater adaptation. To apply this, you can put something like 85% of your best back squat on the bar and do one AMRAP set (as many reps as possible) to failure. Make sure you have a spotter nearby or you know how to properly miss a squat. It should also be noted that you do not need to do this frequently (perhaps only once or twice per mesocycle), as this type of training is quite stressful for the central nervous system.

You can also utilize this concept for muscular hypertrophy. "Recent studies have pointed muscular failure to be an important factor in order to maximize adaptations when RT is done at low intensities (LI-RT), " continued Nóbrega and Libardi. Try to use really light weights on your next set of biceps curls and go until you can no lift the dumbbells.

Additionally, while many "fitness gurus" have deemed high repetition sets as inefficient for muscle growth, research has shown that extremely high repetition training is, indeed effective for muscle growth. The conventional understanding is that sets of 20 repetitions or more are to be used for endurance of the muscle. Schoenfeld et. al. showed us, in his 2015 study, that 25-35 rep sets can work just as well as the traditional 8-12 rep sets we all know and love.

Schoenfeld drafted 24 experienced male trainees for his research. "Training was performed 3 times per week on nonconsecutive days, for a total of 8 weeks. Both [high load] and [low load] conditions produced significant increases in thickness of the elbow flexors (biceps), elbow extensors (triceps), and quadriceps femoris (9.3 vs. 9.5%, respectively), with no significant differences noted between groups." While this study defies the industry standard, it demonstrates that you can utilize many different intensities and volumes to elicit the same training effect.

Finally, I want to talk about sets. Most programs seem to cling to the magical 3-4 range. Every once in a while, you can try 5 or more sets. Why stop there? Sometimes I'll even do 10 sets of 10 (100 total reps) of a given movement. This is a great way to increase total workout volume and stimulate hypertrophy. You don't necessarily need to do 10 sets of every single accessory exercise, because you'd spend a full day in the gym, but it's a great way to finish off an intense session.

Works Cited:

1. Nóbrega, Sanmy R., and Cleiton A. Libardi. "Is Resistance Training to Muscular Failure Necessary?" Frontiers in Physiology Front. Physiol. 7 (2016): n. pag. Web.
2. Poliquin, Charles. "The Best Training Methods for Big, Strong Arms." Strength Sensei. N.p., 19 Feb. 2015. Web. 
3. Schoenfeld, Brad J., Mark D. Peterson, Dan Ogborn, Bret Contreras, and Gul T. Sonmez. "Effects of Low- vs. High-Load Resistance Training on Muscle Strength and Hypertrophy in Well-Trained Men." Journal of Strength and Conditioning Research 29.10 (2015): 2954-963. Web.