Representin’ the Repetition!
By
Layne Norton BS Biochemistry
In today’s bodybuilding
culture, extremes have become the norm. It seems every so called
guru is coming up with a new extreme diet, supplementation, or extreme
workout. It seems everyone is trying to sell you some workout routine
with a magic set and rep scheme. Some claim that you should only
lift low reps because that is where the most overload occurs and
where most strength gains are made. Other routines claim that anything
under 10 reps is a waist of time. Some even recommend repetition
schemes as high as 100!!!! So what’s the dealio? Well, my mama
always told me “moderation in everything” and by god she was right!
There is no magic rep scheme. ALL rep schemes have merit and all
should be utilized in order to achieve maximal physique development.
Let me explain how every rep scheme has its merit.
Low
Reps: Typically defined as anywhere from 1-5 reps, low reps
place the most load on the muscles as you are able to handle the
heaviest weights in this rep range. Other than placing a large
load on the muscles, this rep scheme also has the advantage of activating
ALL fiber types including the slow twitch fibers! Now I’m sure
you are thinking “wait a second, I’ve always been told you had to
do high reps to activate slow twitch fibers” WRONG! Muscle fibers
are recruited in order from slow>intermediate>fast, so if
you are lifting a very heavy load, your muscles will recruit all
the slow fibers first, if the tension they create is not sufficient
to support the load, the intermediate fibers are then recruited,
and if they can’t cut it, the fast twitch are recruited. So you
can plainly see if you are lifting heavy loads you are maximally
stimulating slow twitch fibers. Lower rep schemes & heavy loads
also cause the stimulation of myofibrillar (the actual proteins
that are responsible for contraction) protein synthesis better than
any other rep scheme. Furthermore, lifting in this rep range will
yield great strength gains, which will enable you to use more weight
in other rep ranges, thus overloading the muscle even further & causing
greater hypertrophy.
Moderate Reps: Typically defined as 6-12 reps, moderate rep schemes
are sort of the jack of all trades, master of none. They have many
of the benefits of the high rep schemes and many benefits of the
low rep schemes. In peer review studies, it is this rep range that
seems to consistently cause the most overall hypertrophy. This
is probably because the rep range is low enough to allow use of
heavy loads, but enough reps are performed that the muscle is under
tension for a longer period of time under the load than it would
be in the low rep range. This should then result in the greater
hypertrophic response.
High Reps: Typically defined as anything around or above 15 reps.
Now I know you are probably thinking “If low reps stimulate all
the fibers, result in the best strength gains, and moderate reps
result in the most hypertrophy, why in the world would I do high
reps?” Well high reps still have their merits. High repetitions
cause massive glycogen depletion during the workout. The body will
compensate for this in the post workout period by increasing the
amount of glycogen the muscle stores. Since glycogen is very hydrophilic,
this extra glycogen will pull even more water into the cell (about
2.7g water/gram of glycogen). This increase in intracellular water
is very anabolic as increased cell hydration induces increases in
protein synthesis and also causes the cell to stretch. Muscle cell
stretching is one of the signals for cellular growth and if the
stretch is forceful enough can induce the release of growth factors.
All this information is well and good, but I’m sure you are wondering
“how the hell to I integrate it into my routine?” Let’s just use
a chest workout as an example. I would start off the chest routine
with a compound movement for low reps with heavy weights. Starting
off in the low rep range will allow you to lift your heaviest possible
weights since you are fresh and not fatigued. You would not want
to perform sets with heavy weights & low reps at the end of
a workout as you wouldn’t be able to move near as much weight.
Some form of dumbbell or barbell press for 3-5 sets of 3-5 reps
would be great for stimulating strength gains and overloading the
muscle. Rest periods should last however long you need for your
body to recover and for you to feel 100% mentally focused for the
next set. The focus should be on moving as much weight as possible.

After the strength sets
are done, I would perform another 3-5 sets of a different pressing
movement aiming for a load that allows you to perform 6-12 reps.
Make sure you hit the lower & higher
ends of this rep range don’t just doe 3-5 sets of 6 reps. What
you might try is doing around 6 reps on your first set, then reducing
weight to perform 8 reps on your next set, then 10 reps on your
next set, and 12 reps on your final set. Performing the sets in
this manner will allow you to reap all the benefits of this rep
range. Since you are already fatigued from the previous pressing
exercise, you might try using a pressing movement that requires
less stabilization & balance so you can focus on moving the
weights, something like a hammer strength press would be ideal here.
Rest periods during these sets should be around 2-3 minutes.

To finish off your workout I would suggest an isolation exercise
for 2-3 sets of high reps (15+ reps). Using an isolation exercise
will ensure that your chest fatigues rather than your shoulders
or triceps failing before your chest which may occur during a pressing
movement. Cable crossovers, dumbbell flyes, cable flyes, or a pec
deck fly movement would be optimal for this exercise. Rest periods
should be 60-90 seconds MAX! Go for the pump and burn it out!
The doorway is open for you… now go get yo’ swole on!
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