Download Cybex Test Report Tool to Assess

Cybex Test Report Tool to Assess
Strength and Deficiency in Involved Hamstrings
The purpose of this rating scale is to assist in analysis of a graded
Cybex test report. This scale should be used by Athletic Trainers, Physical
Therapists, Sports Medicine Physicians and their athletes to determine
strength and deficiency in involved hamstrings. This is important in
rehabilitation to show regression and progression. This scale could be a
major factor in determining return to play or activity. Also, this scale could
be used to predict potential pathology.
The rating scale was conceived based on Cybex isokinetic test reports
located in the Esby Training Room. Analysis of Cybex test reports requires
experience with exercise physiology, rehabilitation, and biomechanics, of
the lower extremity.
The data used to rate strength and deficiency are in peak torque
(FtLbs) ratio of hamstrings to quadriceps. It is to be understood that in
ambulation, the hamstrings decelerate the powerful quadriceps and in order
to do this efficiently, the hamstrings must produce 50% of the torque
produced by the quadriceps. If the hamstrings can not do produce this 50%,
there is potential for injury or further injury to the entire lower extremity. If
the hamstrings are producing >75% of the quadriceps torque, you must
suspect involvement of the quadriceps.
 A score of 5 indicates the hamstrings are >75% the strength of
quadriceps
 A score of 4 indicates the hamstrings are 74-51% the strength of
quadriceps
 A score of 3 indicates the hamstrings are 50% the strength of
quadriceps
 A score of 2 indicates the hamstrings are 49-40% the strength of
quadriceps
 A score of 1 indicate the hamstrings are <40% the strength of
quadriceps
 A score of 5 indicates the hamstrings are >75% the strength of
quadriceps
This is an area of concern. Your quadriceps should be
significantly stronger than hamstrings, if the hamstrings are >75%
the strength of quadriceps, you should suspect weak or injured
quadriceps.
 A score of 4 indicates the hamstrings are 74-51% the strength
of quadriceps
This is an optimal range. For general population, the lower
end of the range is acceptable; however athletes should be in the
higher end of the range.
 A score of 3 indicates the hamstrings are 50% the strength of
quadriceps
This is a borderline. Hamstring strengthening is suggested.
 A score of 2 indicates the hamstrings are 49-40% the strength
of quadriceps
Hamstrings are weak and strengthening is necessary to
prevent injury.
 A score of 1 indicate the hamstrings are <40% the strength of
quadriceps
Significant involvement exists. Pathology must be identified
to facilitate proper rehabilitation.
DATE
Example:
PATIE DX
NT
PEAK
TORQ
UE
QUAD
S
11/11/0 Joe
Left 2nd 150(ftl
0
Bazook Degree bs)
a
hamstri
ng
strain
PEAK
TORQ
UE
HAMS
PEAK
TORQ
UE
QUAD
S/
HAMS
50(ftlbs 30%
)
RATIN REPO
G
RT
TYPE
1
Isokine
tic
short
bilatera
l
If you notice, the rating is a 1, therefore, there is significant involvement and
rehabilitation must be started.