Monark 939 E
15
The versatility of the 939 E/939 Medical Ergometer
enable it to be utilized in a variety of testing
environments. The precision and reproducibility of
measurements made with the ergometer in conjunction
with the ease of testing, allow it to be employed in
clinical exercise stress facilities, corporate fitness
programs and health clubs. The backgrounds of both
the individuals being tested and those administering
the test may be vastly different in these widely varying
testing situations.
In general, whether in a clinical laboratory or a health
club, the subject may be exercised quite strenuously,
depending on workloads which have been selected. As
a precaution, it may be advisable, prior to beginning
an exercise protocol, that each subject consult with
a physician. Before testing, the operator should
review the entire protocol operation with the test
person, explaining the work which will be required
and the duration of the procedure. A system of
communicating fatigue, chest pain or other abnormal
physical response to the exercise should be discussed.
The test person should not engage in heavy physical
activity for several hours prior to testing to establish
maximum oxygen consumption. In addition, all
testing and exercise protocols should be performed
a reasonable time after meals. The test person should
also refrain from smoking within an hour of the
testing period.
The test person should be prepared for riding the
ergometer, including the selection of proper clothing
which neither interferes with the physical activity
nor endangers the health of the test person. The test
person may need some general education concerning
the pedalling of the ergometer. The saddle and the
handlebars should be adjusted for comfort and
proper mechanical distance. The appropriate height
of the saddle is when the knee is slightly bent when
the sole of the foot is centred over the pedal axle with
the pedal to the bottom position.
The operation of the speed metronome and over/under
display should be reviewed. The maintenance of the
proper speed should be practiced at a low workload.
Finally, the chestbelt should be applied and monitored
to check for proper heart rate operation. The baseline
heart rate may also be of assistance in determining the
nervousness of the test person. The test person should
exhibit a relatively stable resting heart rate prior to
starting the protocol.
Testing with Ergomedic 939 E
Power calculation
1 rpm = 6 m on the flywheel brake surface.
50 rpm = 300 m
2 kp force makes 2 x 300 = 600 kpm/min
100 rpm= 600 m
1 kp force makes 1 x 600 = 600 kpm/min
(watt = rpm x kp)
