In Part 1 of this series we
spent time looking at shoulder girdle imbalances that could hinder performance
by diminishing force capacity. We got a little technical and looked at specific
musculature that can become inactive or weak in a specific movement. This leads
to biomechanical inefficiencies and decreased performance. Prior to moving on
to muscle imbalances relating to the hip (Part 3), and how to fix them, I
thought it would be important to take a step back and evaluate the relationship
between stability and mobility.
Maximal
force output generates from power output surrounding joints that demonstrate
exemplary stability. It seems logical to say then, that if you want to increase
your power output, you need to improve your joint stability. This rationale
makes sense, but the methods behind achieving this stability may surprise you. Remember
this fact:
Quality stability cannot be achieved without
quality proprioception. Quality proprioception cannot be achieved without quality
mobility.
Proprioception can be defined as
your body’s sense of relative position with adjacent parts of the body and
strength of effort being utilized in movement. Basically, there are receptors
located all throughout your muscles, tendons, ligaments, and joint capsules that
provide your body brain with information to process so that it can properly
organize movement. If you closed your eyes and then raised your arm up in the
air in front of your face you should know exactly where your arm is because of
these neural pathways.
If you go
back through the LBEB archives you will discover the disdain for training in
front of mirrors. Many people who have poor proprioception will develop visual
accommodation creating poor kinesthetic awareness. If your lack of kinesthetic
awareness is compensated for by your vision,
you will promote global inefficiency in mobility and stability in your
body.
A simple
test you can perform to assess your proprioception is a single leg stand. Stand
barefoot on one leg, eyes open, with your other leg lifted at a 45 degree angle
from the hip. Then repeat on the other side. If you are under the age of 60 you
should be able to do this for 30 seconds without problem. Your arms shouldn’t
flail around, the foot you are standing on cannot move and the elevated foot
cannot contact the base leg.
Now perform
the same test with your eyes closed. Give yourself a few tries per leg. If you
are under the age of 60 you should be able to do this for at least 20 seconds
keeping your eyes closed. Repeat on the other side and assess symmetry. If you
find yourself struggling more on one side or a major discrepancy in time, you
should take that into consideration as well. If you are incapable of hitting
the goal times with your eyes closed, but you are fine with your eyes open, you
demonstrate poor proprioception with visual accommodation. In other words, you
MAY be someone who squats in front of mirrors.
Why does
this matter? Go back to the lines above. You MUST have quality proprioception
in order to achieve stability prior to force output. The other part states that
you must have quality mobility to achieve quality proprioception.
If you lack joint mobility, you
cannot achieve the necessary stability to maximize force output. Squat all you
want, but it’s kind of like the saying, “Practice doesn’t make perfect. Perfect
practice makes perfect.” If you are repeatedly performing squats, and your body
is making small compensatory adjustments throughout each one because of joint
restriction, you are diminishing your returns.
You may
still be able to move a ton of weight, but you could move so much more!
You think
of the squat and typically you think of ankle and hip mobility, but think of
the snatch instead. Ankle, hip, thoracic and shoulder mobility all at one time,
working in harmony with speed and force from the legs, hips, core, back and
shoulders. What I’m telling you is that reduced mobility in any one of those
areas will reduce your lifting potential. Your brain will get bad input from
your body. Garbage in > garbage out!
If it’s
your ankles, perform closed-chain dorsiflexion movements, not just traditional
calf stretches. Put your foot up on a stool, keep your heel down and press the
knee forward while keeping most of your weight on the straight leg. See if you
can get your knee four inches past your toes.
If it’s
your hips there are a ton of movements it could be. Go to mobilitywod.com and
run through some movements to see where you are restricted.
The
thoracic spine and shoulder are covered decently by Starrett as well. Foam
rollers, lacrosse balls, woody bands, seated rotation mobs etc., are all good
for improving these areas.
Once your
mobility restrictions are removed improve your proprioception further. Foam
pads, wobble boards, rocker boards, and air discs are all good tools to use in
order to improve your proprioception. And, hopefully it goes without saying to
not try and strength train on these devices.
Proprioceptive
training is crucial for athletes not only for the reasons listed in this
article, but because it has also been shown to markedly reduce ACL injuries in
soccer and basketball players, ankle sprains and a variety of other injuries.
The message
here is to improve your mobility and proprioception in order to maximize stability.
Stability allows you to generate maximum force. Use those recovery days you
are supposed to be taking and focus on something that will still help you the
next time you get under the bar.
Dr. Kevin Kerchansky, DC, DACRB, CSCS, CICE
Dr. Kerchansky is the
Director of Physical Rehabilitation at Triad Pain Management Clinic, a
multidisciplinary, functional rehabilitation facility in Tempe, Arizona. He is
a Board Certified Diplomate to the American Chiropractic Rehabilitation Board,
and has been certified to testify in court as an expert in Clinical
Biomechanics. Dr. Kerchansky is a post-doctorate educator at Northwestern
Health Sciences University, currently conducting seminars around the country on
the Functional Rehabilitation of injuries. His pursuits have also led him to
credentialing through the NSCA, USAW, CrossFit, and various other sport
systems.









