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Concurrent Strategies in Strength Training, Part 1
This is part one of a three-part series.
Concurrent t raining by def inition means training to achieve multiple t raining goals at the same t ime.
Concurrent training in the iron game was made popular by the Westside Barbell Club and LouieSimmons, who erroneously called it conjugate (which is a term coined by Yuri Verkhoshanski to describe a
method that utilizes a delayed training ef f ect, training residuals, and other fancy adaptational terms) instea
concurrent. Parallel and mixed training are synonymous with concurrent.
Why is concurrent t raining such a ho t to pic lately? Because, in theory, when you ut ilize sequent ial training
(traditional or linear training), you constant ly move away f rom the qualities youve just developed, and goin
the rule use it or lose it , you start detraining those qualities (if there is no maintenance work aimed at
maintaining those qualities).
Block training (conjugate training or the conjugate sequence system), which was developed by Yuri
Verkhoshanski, is a s pecial f orm of sequential training organized into blocks. Each block is aimed at producst rong, delayed training ef f ects by utilizing concentrated loading (which induces overreaching). The blocks
conjugated into specif ic sequences so the t raining residuals and delayed training ef f ects are maximally us
at the mos t important t ime of the year (competition period, meets , matches, etc.).
On the other hand, concurrent t raining tries to develop all important qualities at the same time. This approa
as any other, has its own pros and cons. The biggest advantage of the concurrent approach is the parallel
development of all qualities. The biggest disadvantage is af ter some time (or with the most advanced athle
you s imply cant develop all of the important qualities at the same t ime without risking overtraining and limit
potential training eff ects.
This is where a modif ication of concurrent training comes into play. The modif ication is simple and is basedtraining emphasis. You st ill train all of the qualities, but you emphasize only a few of them while maintaining
others. Then you switch. In my previous art icles, I conf used this modif ication of concurrent training (empha
methods) with the conjugate sequence system and block training. That was my mistake. Although it is very
similar to block training, it is no t block training, nor is it the conjugate o r conjugate sequence system. It is
modif ied concurrent training.
This litt le rant o f mine is aimed at so lving (or confusing you even more) this concurrent versus conjugate
problem, which is the topic of this art icleconcurrent strategies in strength t raining. So stay with me becau
the f un is just about t o st art.
Basically, there are numerous goals that can be achieved with st rength t raining. Depending on the autho r, t
can be a dif f erent number of goals with diff erent names f or them. For the sole purpose of this art icle, I wil
def ine those goals, most ly relying on Westside terminology.
Maximal and relative strength
The goal is the development of maximal strength.
The method used f or developing this mot or quality is the maximal eff ort (ME) method.
Explosive st rength
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The goal is the development of explosive strength or the ability to produce great force in the least
amount o f time.
The method used f or developing this motor quality is the dynamic ef f ort (DE) method.
Muscular hypertrophy
The goal is the development of muscular hypertrophy (without going into the debate about
sarcoplasmatic versus myof ibrilar hypertrophy).
The method used f or developing this motor quality is the submaximal ef f ort (SE) method (mos tly for
f unctional or myof ibrilar hypertrophy) and the repetition ef f ort (RE) method (mostly f or t otal or
sarcoplasmatic hypertrophy).
Muscular endurance
The goals are muscular endurance development, f at loss , anatomic adaptat ion, and sarcoplasmatic
hypertrophy (depending on the context). Some also put vascularizat ion, glycogen depletion, and
mitochondria development as goals f or this method.
The method used f or developing this motor quality is the repetition ef f ort (RE) method.
As you can see, even in this class if ication, there are conf licting areas regarding the go als and methods use
know this classif ication can be criticized, broadened, and reduced, but its usef ul fo r the purpose of this
article, which is to describe how to use the dif f erent concurrent schemes to develop all of those goals at t
same time. (And t ime is a very relat ive term. Just ask Einstein.)
Achieving these f our goals (and thus motor qualities ) is based on ut ilizing the dif f erent loading protocols
(weight, reps, sets, tempo, rest ) or methods. Each of the f our methods (ME, SE, DE, and RE) utilizes dif f e
loading protoco ls. This is based on the repetition cont inuum or the idea that dif f erent goals can be achieve
utilizing diff erent reps per set. There is a dynamic interaction between the variables of reps, sets, and load
The load used (percentage of 1RM) ultimately determines how many reps per set are done. The reps per s
used (or set time) ultimately determines how many total sets must be done. The interaction between the thwill af f ect what adaptat ion is realized. Although not all authorities agree, some believe that there is a
cont inuum of adaptations, which may occur with dif f erent repetition sets . This continuum is called the
repetition continuum.
According to Christ ian Thibaudeau (o ne o f the coaches whos had much inf luence on my philoso phy), t his
repetition continuum changes as the athlete advances. Here is the modif ied table f rom The Black Book of
Training SecretsEnhanced Edition.
Beginner Intermediate Advanced
Strength (ME) 59 reps/set 37 reps/set 15 reps/set
Funct ional hypert rophy (SE) 1012 reps/set 810 reps/set 68 reps /s et
Total hypertrophy (RE) 1316 reps/set 1114 reps/set 912 reps/set
Strength endurance (RE) 1724 + reps/set 1522 + reps/set 1320 + reps/set
Another repet ition continuum is presented by Lyle McDonald. Here is a modif ied classif ication of loading
protocols (moto r qualities) f rom his article, Periodization f or Bodybuilders. (It can be downloaded f rom Ly
website at www.bodyrecomposition.com.)
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Type of training Reps (%1RM) Rest Tempo Time under tension (TUT)
Strength training (ME) 15 (85% +) 35 min 3/0/X 20 sec or less
Intensive bodybuilding (SE) 46 (8085%) 23 min 34/0/1 2030 sec
Extensive bodybuilding (RE) 68 (7580%)
1015 (7075%)
12 min
12 min
3/0/2
3/0/2
3040 sec
4060 sec
Really extensive bodybuilding (RE) n/a (6065%) 1 min 2/0/2 60120 sec
Here is the repetition continuum f rom James Smith, author of High/Low Sequences of Programming and
Organizing Training.
ME (+ 90%) 13RM depending on st rength preparedness
SE (8090%) 47RM depending on st rength preparedness, 410 repet ition range
RE (8 repetitions
DE (up to 80% for Olympic lif ts /derivatives; up to 70% for classic powerlif ts /derivatives)
As I pointed out earlier, each author ut ilizes slight ly dif f erent class if ications. However, loo k f or the common
denominator. Every one of them classif ied the goal that t hey wanted to reach (mot or quality), the method t
used to reach it, and the loading protocol that determines that method (based on the repetition continuum)
But guess what? Diff erent people respond dif f erently to rep ranges. Some may grow by doing triples and
doubles (three and two reps per set with 2RM and 3RM loads) and some may grow doing 15 sets. You won
grow if you dont eat though. The same goes f or s trength. Some may increase their st rength by doing max
while some may increase it by doing six sets. As coach Thibaudeau pointed out , those responses depend o
the athletes level. However, Id like to add that it depends o n the athletes characterist ics (muscle f iber
dominance) and nutritional status (caloric def icit, maintenance or def icit level, amount of protein and carbsYou may grow doing 5 X 5 or you may not. It depends on how much you eat , what other t raining you are do
how you are sleeping, and many other f actors.
What is the point o f this? The point is that I am NOT negating the existence of the repetition continuum, b
rather I am trying to point out that it must be put into context (other training, athletes characteristics,
nutritional status, recovery). With the concurrent approach to st rength training, you are doing all of the
mentioned methods (maybe not all of them depending on your philosophy) and youre trying to develop all
the qualities at the same time. It is possible to develop muscular hypertrophy and strength, but it is nearly
imposs ible (except f or f at beginners and those coming f rom a long lay of f ) to develop s trength and lose f a
And its even more impossible to lose f at and increase muscle mass.
This is why I said that t hings must be put into context and they must be goal oriented f or a given athlete.
These problems are universal to other methods as well (sequential, alternating). They dont so lely cause
issues for just the concurrent method. The concurrent method solves some drawbacks of the sequential
method (use it or lose it law) and utilizes the crossover effect between methods.
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What I mean by the crossover ef f ect is that doing ME training will increase the number of reps or weight u
during RE and SE training, and RE and SE training will produce dif f erent s timuli to the muscles and central
nervous system (variety) as well as increase muscle mass , which will in turn improve ME performance. The
same thing goes f or t he ME and DE methods. However, this crossover may become negative if the recove
capacities o f the athlete are exceeded, and RE/SE work may impair ME/DE perf ormance and vice versa (as
visible with advanced lif ters). This is why smart planning with the concurrent approach is a must, and af ter
some time (with most advanced athletes) a modif ied concurrent method must be used (emphasis on switch
maintenance loads).
If you are still reading this and youre not conf used or sleepy and because I described everything I needed
describe, I can start talking about dif f erent st rategies toward implementing the concurrent approach in real
st rength training. Based on my current knowledge, Ive identif ied three groups o f these st rategies:
rep schemes
daily undulating periodization (DUP)
priority lift s
Rep schemes
The simplest method o f utilizing the concurrent approach to training is simply to do the whole rep continuu
on a given exercise. In the f ollowing table, there is an example of st raight sets (or sets across), which are
commonly used in s trength training.
Straight sets or sets across utilize the same number of reps with the same weight used. They are very
popular and f amous f or their st rength increasing and muscular mass building ef f ects. Some of the
variations o f the s traight sets may be a narrow pyramid, descending and ascending sets, narrow stages, a
narrow waves. The o nly prerequisite is that t he load and the reps done STAY in the SAME rep bracket (inte
zone) of the repetition continuum. This way the work is aimed at achieving only one adaptat ion ef f ect (mot
quality). Coach Charles Poliquin in his awesome book Reps and Setsproposed a 10 percent rule where he
suggests that the load used in a given exercise should stay within a 10 percent zone of your 1RM. This wa
you aim f or only one adaptation ef f ect and you avoid confusing the body.
I dont know about you, but Ive not iced that st raight sets are pretty boring. Ive also not iced that I have
psychologically easier gains in strength when some kind of rep and load f luctuat ion (loading protocols) is u
But thats just me. I also believe in Poliquins recommendation o f a 10 percent intensity zo ne. Some people
dont. This is why they utilize most, if not all, of a repetition continuum on a given exercise. The most comm
methods to achieve this are wide pyramids, wide stages, and wide waves.
A great number o f lif ters have increased their s trength and muscular mass utilizing s traight sets (and being
under the 10 percent rule without knowing it). However, a great number of them increased both their st reng
and muscular mass doing wide pyramids. Is their body conf used? Hell, I dont know!
The wide variations of stages, pyramids, and waves are based on utilizing all of (or most of ) the repetitio
cont inuum (or more than a 10 percent load f luctuat ion). Basically, you do a couple of sets in the ME zone,
couple of sets in the SE zone, and a couple of sets in the RE zone. How you organize the stuf f is actually
what dif f ers between those methods. However, the common thing is that you do all of the reps f rom the
repetition continuum and aim at increasing maximal strength, muscular hypertrophy, and muscular enduranc
the same time, which is the major idea of concurrent t raining. Some examples of wide pyramids f ollow.
Stay tuned fo r part two!
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