By Coach Steve
The intent of core training is to strengthen the muscle groups
that stabilize your skeletal structure. These are primarily the
muscles in the thoracic area that determine your posture in each
sport and in effect link your upper and lower body. The muscle groups
that you strengthen with core training generally don't have the
range of motion needed to drive you forward, but they are the 'platform'
from which your arms and legs work. This need for a stable platform
clearly applies to proper running and cycling posture. In highly
developed swimming movements it may be even more important since
the middle section of your body can actually contribute force through
twisting motions where the direction of force from arms and legs
oppose each other.
Core training helps get you 'in touch' with individual muscles
and small groups of muscles. This awareness of specific muscles,
or muscle groups is the first step in improving various posture
and form issues. For example, many adults (and plenty of athletes)
have poor posture stemming from weak mid-back muscles (rhomboids).
This particular posture issue looks badly and can negatively impact
each of our three sports. The first step to improving your posture
is getting to know these muscles, then toning them so you can tighten
them independently of your lower back's muscles which probably don't
need additional toning work.
Core training focuses on muscular areas of the abdominals including
obliques (your sides), upper and lower back (deltoids, rhomboids),
hips (gluteals, hip flexors, psoas�), outer and inner thighs (abductors
and adductors), hamstrings, even some pectoralis and triceps work.
When driving yourself forward in each of our sports, you're actually
only as strong as your weakest muscular link. For example, even
if you have the quads of a bodybuilder, you must have the strength
in your upper body to control the force your quads can develop.
On a bike, gravity dictates that all down force generated at maximum
output is limited to your body weight and the opposing force of
pulling up by the opposite crank arm. You can create additional
down force by pulling up on the handlebar, thus opposing the tendency
for your body to rise as you push down with your quads. But, since
your legs are attached at your hips, not at your arms, the stable
platform your arms create must be extended to your hips and legs
through a rigid torso. Similar dynamic examples apply to running
In running consider what you felt like during the IronMan's marathon
(any marathon for that matter). When you become fatigued, your form
falls apart. It's not just because of tired legs, it's tired arms,
tired back, everything hurts. Having a strong torso helps hold your
form together in the latter stages of an endurance effort - any
distance race effort for that matter.
Now consider how a fish moves when it swims. Its fins and tail
don't move independently from the rest of its body. The force a
fish creates is through longitudinal flexion of its whole body.
Non-aquatic creatures are the only ones that move with its appendages.
The movements below can all be done without any special equipment,
just a floor with a little padding is all you'll need.
Here is a short sequence of core movements:
Upper: Crunches, lateral crunches, full sit-up.
Lower: Leg raises, single, "pedaling," double legs.
Side: Bridging on your side, double leg raises.
Upper: Bridging, hyperextension.
Lower: Bridging, hyperextension.
Abductors: Side leg raises.
Adductors: Side double leg raises.