Often I get asked often during my lectures on program design, “Is single set training just as beneficial as multiple set training?” Ultimately, the objective of this article is to put this issue into perspective so that you, the fitness professional, is able to answer this question for your clients.
And the answer is that multiple-set training (3-5 sets) produces superior training results in maximum strength and hypertrophy (2, 3, 4, 6,) over single-set training!
So why the confusion? There have been several studies that have demonstrated similar improvements in muscular strength and hypertrophy when performing single or multiple sets (1, 7, 8). However, careful examination of the research literature brings to light some intriguing explanations for these similar results.
Small Muscle Mass, Single Joint Exercises Vs. Large Muscle Mass, Multiple Joint Exercises
Some studies measured strength improvements using isolation type exercises or small muscle mass type exercises such as leg curl and leg extension (6, 9). It is believed that over the same period of time, single-joint exercises do not produce as large of a training effect as multi-joint exercises. This factor implies that if a study used small mass, single-joint exercises, that differences between one or triple-set training may have been masked and the actual impact of the three set training protocol not as evident.
Many “single-set” studies, were generally performed in under 3-months (12-Weeks). It is widely accepted that as an individual trains beyond 3-months, gains are much more apparent and significant with multiple training. (6).
Trained Vs. Untrained Subjects
Many single-set studies that showed similar results to multiple-set training, used untrained subjects. It has been well-known for several decades that untrained subjects beginning any type of resistance training program, initially, demonstrate large performance increases over a short period of time regardless of the number of sets performed. However, as time continues (past 6 months) these gains (using single-set training) become quite small. Trained subjects improve at a slower rate than untrained individuals and require greater stimulation in order to improve. It is here that multiple-set training demonstrates it superiority.
These are only a few of many potential reasons for why single-set training has produced so many favorable accolades. However, this is not to say that single-set training does not have its value as a viable training protocol.
Putting it into Perspective
Sometimes a client’s schedule or lifestyle does not offer them the luxury of training more than two times a week for longer than 30 minutes. Single-set training is quick and produces results.
Often clients are not willing to do a program no matter how technically perfect it is, they just don’t like having to weight train for more than 20-30 minutes. Single-set training is a simpler and more appealing option for these clients
Maintenance of Strength
It does happen that some very well-trained individuals are no longer capable of putting in the time or effort required to continue to stimulate gains in strength or size. This may be due to starting a new job, going back to school or having a baby. However, these people want to maintain as many of the benefits of their training for as long as possible; single-set training (high-intensity) has been shown to reduce strength loss as compared to no training at all. For example, one client of mine was able to perform 9 chin-ups with a 30 pound load in September; he then went back to his graduate studies and could only train 1-2x/week for 20-30 minutes. After 8 months of single-set training, 1 x/week, using the same workload, he was able to perform 5 chin-ups with the 30 pounds. Although, he did lose strength, it was minor given the low volume and frequency of training performed during the 8 months.
If working with very committed TRAINED individuals wanting to improve, multiple-set training appears to offer the superior training effects over time.
However, If you are working with:
- sedentary individuals
- clients wanting general muscular tone and firmness
- clients with “tight” schedules
- clients with an aversion to gym training or spending too much time in the gym
- Fit individuals who no longer have the time to workout, but wish to keep their training results then single-set training may be just the thing!
The key point to remember here is not so much what is the best training protocol, but rather, what is the training protocol that your client is most likely capable of doing at that specific point in time! Also, take into consideration many of the variables discussed above when deciding on single versus multiple sets. So, when you are asked the question “what’s better, multiple or single set training?” You can say….. “That depends!”
Andre Noel Potvin – President and founder of INFOFIT Educators and a Vega Ambassador. INFOFIT, a school for fitness professionals fosters the development in becoming a BCRPA, ACE, ACSM, and NSCA certified personal trainer. He is also an International Speaker, Author of the Great Exercise Handbook series (which has sold over 1 million copies worldwide) and a former Exercise Physiology Instructor at the University of British Columbia in Vancouver, Canada. For information about this topic, please email him at email@example.com
- Dehoyos D, Abe T, Garzarella L, HassC, Nordman M and Pollock M. Effects of 6 months of high or low volume training resistance training on muscular strength and endurance (Abstract). Medicine and Science in Sports and Exercise. 30(5): S165, 1998.
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