[quote]LoRez wrote:
I’m especially curious about what kind of stimulus worked best for different muscle groups. For instance, high-reps for shoulders has gotten a lot of press on here recently. Curious as to what you’ve found to work for you.[/quote]
Sorry I missed this earlier,… I think it’s safe to say that we all hear the usual fast twitch/slow twitch theories, and how certain muscle groups respond better to specific rep ranges early in our training journies. Some might even get as far as to read up on muscle biopsies to assess the fiber type breakdown of an individual (I distinctly recall reading an old piece on Skip Lacour and how he was ridiculously almost all fast twitch fibers in his body!)
This is obviously based on sound science of course, but as with most training related variables, there is going to be a certain degree of individuality across the population. If I may use myself as an example for a bit; my legs have always been a bit if a weakness for me. I spent many years early on chasing weights, getting stronger, but never looking like a bodybuilder. When I started focusing on hypertrophy, I adopted the oft repeated ‘higher reps for legs’ approach, and was able to attain some level of development. Still, my legs (quads especially) seemed to lag.
Eventually, I went back to heavy weights and lower reps, albeit focusing on the performance of each rep as opposed to just moving big #s. The result was a nice little growth spurt. How was this possible if my legs were supposedly comprised of high rep fibers?! Of course a year or two later, as my lower back became a bit of an issue due to injury, I let my rep range creep higher. This also gave me a nice little bit of improvement.
So looking at this example, is it really as simple as addressing a higher concentration of fast twitch or slow twitch fibers? Alternately, could it be as simple as creating a new method of stimulus via different rep ranges?
In my opinion, it’s a combination of the two. Trainers, especially new ones, love to use heavy weights for curls. This is a great approach because in every day activities, we don’t normally use this manner of movement with such appreciable resistance. Also, who doesn’t feel like a bit of a badass watching their arms swell as an impressive piece of iron is heaved against gravity amidst manly grunts and groans. Of course, this does eventually reach a point of diminished returns. I would note that I have seen many IFBB pros describe how they drifted more towards cable movements, and isolation based work as they continue to improve.
Back when he was one of the top level pro competitors, Chris Cormier would alternate a couple of times each year in attributing his recent progress to either high reps, or low reps, expousing each as if it were the holy grail, and he was blind to have not seen it before. Of course he would always revert back to his previous approach, and shout it’s praises from the mountain tops a few months later as well.
Is it really this simple? Can all the people magically benefitting from high rep shoulder work lately really just have fallen into such a groove of “do heavy work all the time to get huge”, that such a simple change will yield continued results? I’m sure we could argue the science and rudimentary theory of Specific Adaptations to Imposed Demands (S.A.I.D.) and how it sums everything up nice and neatly. Possibly the old bodybuilding adage of “everything works, but nothing works for very long” applies equally well.
I would suggest, in terms of programing your training with consideration to fiber types and rep ranges:
1-Approach your training with the understanding that in most cases, certain muscle groups can have higher amounts of slow twitch (high rep) fibers [ie.quads, solei, forearms, traps…]
2-Keep in mind that everyone is different, so if you are progressing in every area but one, take a chance that you may perhaps have a different genetic fiber type split, and make use of a different rep range for that muscle group.
3-If you reach a point of stalling out after an honest, consierable length of time, and your diet and recovery are on point, perhaps attempting a different working rep range would be worthwhile.
(Just some of my thoughts on the topic, hope that sheds some light!)
S