Now more than ever in human history there are tons of options for working out. In spite of that, there are now also more obese people, more injured people, more people with poor body images. And the answer we hear most often is that we need to work out more, but is that really the case?
A recent study looked at three groups of individuals doing the same workout, varying the speed of the exercise. For example, one group did a chest press for two seconds on the way down and four seconds on the way back up; another group did 10 seconds on the way down, 10 seconds back up. Every group did their workout to momentary failure. The shorter duration exercisers did more reps than the slower exercisers, but all of them spent approximately the same length of time under load.
The researchers found no significant difference in strength gains between the three groups, even though the slowest group was only doing 1.5 reps of each exercise. You read that right reps at 30 seconds each way.
In another study three groups of experienced lifters were put through the same regular workout, with the only difference being the volume of exercise: one group did a single set, the second did three sets, and the third did five sets. They all used a weight that took them to momentary failure after about 8 to 12 reps. The researchers found that all the participants experienced the same strength gains, even though the single set only took about 17 minutes to finish, and the five sets took about 70 minutes to finish.In both studies, the key was reaching momentary failure; if you get to the point where you experience momentary failure, you will experience strength gains, regardless of the length of the workout.
This is one of the reasons I love Les Mills body pump. During a workout each muscle group is given anywhere from three to six minutes of isolated work. Whenever I take the class as a participant, I focus on maintaining perfect technique every rep and I select a weight that takes me to momentary failure by the time the workout for each muscle group is done. That’s been the recipe that I’ve used to get stronger and accomplish my goals.