User Manual

10
Find Great Educational Videos on Don’t Forget to Like & Follow us:
@fitterfirst
Torso and Hip Muscle Activity and Resulting Spine Load and
Stability While Using The Pro Fitter 3D Cross Trainer
By Priyanka Banerjee, Stephen H.M. Brown, Samuel J. Howarth, and Stuart M. McGill - University
of Waterloo, Journal of Applied Biomechanics, 2009, 25. 73-84
ABSTRACT: The Pro Fitter 3D Cross Trainer
is a labile surface device used in the clinic
and claimed to train spine stability. The
purpose of this study was to quantify the spine
mechanics (compression and shear forces
and stability), together with muscle activation
mechanics (surface electromyography) of the
torso and hip, during three Pro Fitter exercises.
Trunk muscle activity was relatively low while
exercising on the device (<25%MVC), Gluteus
medius activity was phasic with the horizontal
sliding position, especially for an experienced
participant. Sufficient spinal stability was
achieved in all three exercise conditions. Peak
spinal compression values were below 3400
N (maximum 3188 N) and peak shear values
were correspondingly low (under 500 N).
The exercises challenge
whole-body dynamic
balance while producing
very conservative spine
loads. The motion
simultaneously integrates
hip and torso muscles
in a way that appears to
ensure stabilizing motor
patterns in the spine. [...]
Is It Possible to Prevent an ACL Rupture?
By C. Cerulli, C. Asia, G. Bensi, & M. Proiette - Terni, Italy
COMBINED CONGRESS OF THE
INTERNATIONAL ARTHROSCOPY
ASSOCIATION AND THE INTERNATIONAL
SOCIETY OF THE KNEE
The purpose of this study is to establish
whether a precise proprioceptive gymnastic
program can reduce ACL rupture due to a
cutting mechanism.
MATERIAL & METHOD: We followed two
groups of 300 soccer players for two seasons
(1987-89). The conditions of the players were
equal: semi-professional and amateur league,
no previous knee injuries, grass fields, similar
shoes, age 17-25 years.
Athletes were examined before the
competitive season. A clinical evaluation
determined ligamentous laxity (Veli’s score),
knee stability (also using KT-1000), presence
of lower limb paramorphism and isokinetic
evaluation (Cybex II).
Both groups A and B underwent the same
training program with one variant; Group B
performed proprioceptive daily exercises on
a Freeman board (wobble board). At the
termination of the observation period we
compared cases of ACL rupture caused
by a cutting mechanism.
RESULTS: Group A: 67 cases (22.3%) of
all ACL tears; diagnosis done using clinical
evaluation, arthroscopy and MRI or ST-Scan.
Group B: 10 cases (3.3%) of ACL tears.
CONCLUSIONS: By following an adequate
proprioceptive exercise program, a decrease
of 19% of ACL tears caused by a cutting
mechanism was obtained.
Proprioceptive exercises serve to stimulate
ACL and to give better control muscle tone-
thropism and joint movement coordination,
these being important factors in preventing
ACL rupture.
For more information on
ACL Rupture, check out a
a Fitter team member’s
ACL Journey on the
Fitterfirst Blog:
fitter1.com/blog/news/acl-journey