1.
lower extremity flexibility (hips, knees, and ankles)
2.
torso stability and strength, which matches in specific patterns to match
the downward pull of the lower extremity, and
3.
conditioning of desired neuromuscular patterns of normal movement (coordination,
timing and specific recruitment patterns). The BackSystem3 with the AB Handlebars
accomplishes all three.
The
BackSystem3 not only provides excellent stretches for the hips, but
simulates the functional pattern of flexibility. The stretches of the
hips occur from the bottom up (leg moves up-ward toward a stable torso)
rather than the top down (flexed torso moves downward toward the leg).
During a flexion stretch, the hips are flexed maximally before the trunk
is asked to flex. This is exactly the pattern required in many functional
activities: the trunk must remain stable while the hip flexes against
gravity (running, stair climbing, lifting objects.)
In
most activities of the lower extremities,the hip muscles must contract against
a stable (rigid) trunk to achieve adequate propulsion and control of movement.
The hip should generate the power while the trunk and torso remain dynamically
stable, therefore the role of the hips is to be powerful, yet flexible,
and the role of the trunk is to be stable, but flexible enough to adapt
to different postures and situations.
Flexibility
must be present for functional range of motion. Hip strength and power must
be present for maximal propulsion. Trunk strength must match that of the
lower extremities. The trunk muscles must counter-balance the forces created
by the legs, so that the back is not pulled into an undesirable position.
A stable trunk enables more efficient motion of the legs and protects the
back.
The
hip flexors pull downward on the trunk (lumbar spine) when they contract
strongly or when they are too tight. To provide stability against this strong
downward pull, the abdominal muscles must contract from the bottom up, not
the top down. The strength of the AB contraction must match that of the
hip's muscles in order for stabilization (no movement of the trunk) to occur.
So, for the proper training of the abdominals, three things must occur:
1.
abdominal muscles responsible for upward pull on the
pelvis (obliques) must be strong.
2.
strength must match that of hip muscles pulling downward
3.
the upward pattern of contraction must be coordinated with the downward
contraction of the leg muscles in order for stabilization to occur.
Other
equipment, which claim to strengthen the abdominals, flex the trunk
from the top down, lifting the upper torso against gravity. But, in
real life, during activities when the trunk is upright, the abdominals
do not cause the trunk to flex. Gravity does -- gravity flexes the trunk
forward. Any anti-gravity function of the abdominals must be from the
bottom up. That functions, primarily, to stabilize the torso against
the downward pull of the leg muscles rather than move the trunk into
a flexed position. The AB Handlebars are the only equipment available
to therapists and trainers to exercise the abdominals in the way they
are designed and required to function.
The
third component of safe, functional performance of the trunk and lower quarter
is conditioning of the pattern of coordination and timing between the trunk
and hip muscles. Even if strength is equal, the timing of contraction is
off. The trunk will still be unstable. The muscle contractions must match
lower extremity contractions, not only in strength, but also in timing.
Traditionally,
we have isolated the abdominals from the strengthening exercises, without
using the hip flexors. However, all functional movement is a collaborative
effort of the hip flexors and the abdominals. The hip flexors initiate flexion
and the abdominals stabilize the spine and trunk, giving the hip flexors
a stable base from which to create force and move the hips.
Secondly,
most abdominal exercises focus on the rectus abdominus, the transverse abdominus
and the multifidus. Because of their strategic placement, in relation with
the spine, they are used as proprioceptive and dynamic stabilizers of the
lumbar spine. Because of the pelvic tilt movement associated with the BackSystem
3 training and flexibility programs, all these muscles are moved in their
natural alignment plane and the sequence of motion is anatomically correct.
THE
AB HANDLEBARS CREATE OPTIMUM
ABDOMINAL EXERCISES
IN 4 IMPORTANT WAYS:
1.
With the AB Handlebars, the BackSystem3 exercises can be designed for the
high level athlete as well as the person just beginning an exercise program.
Weaker lower abdominal muscles can be assisted, initially, by varying hand
position on the AB Handlebars. With the advantage of leverage, even the
weakest person can complete 20 - 30 repetitions. Initially, high repetitions
are particularly important, so that appropriate motor learning can occur.
Strength is a goal, only after the proper motor pattern is established.
Once the motor pattern is established, exercise can be progressed to any
level of difficulty by varying the lever arm and mechanical advantage or
disadvantage for targeted muscles.
2.
With the AB Handlebars, abdominals can be activated from the
bottom up at varying degrees at hip flexion or extension (tuck). This has
been documented through EMG and kinematic modeling. This allows the person
to develop abdominals for spinal stabilization during hip flexion and extension
movements. Once the neuromuscular coordination is established, increased
strength (force production) can be achieved through changes in the lever
arm.
3. The
AB Handlebars allow for trunk flexion and extension in a diagonal as well
as in a straight plane. Most athletic activities require movement strength
and power in a rotational pattern of motion (tennis, golf, batting, throwing,
boxing, and dance). Most abdominal exercise devices work only in a single
plane.
4.
The AB Handlebars and the BackSystem3 also strengthen postural
muscles: the lower trapezius and serratus anterior, which are often deconditioned
and neglected in other exercise activities. Appropriate hand placement and
posture promote activation of the upper extremity and scapular stabilizers.
So, while lower abdominals are getting stronger, scapular stability, posture
and thoracic mobility improve.
*AB Handlebars U.S. Foreign patent # 552748