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Neurotrac ETS and Neurotrac Simplex
Understanding EMG
Biofeedback
Pelvic Muscle Assessment and Training
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Background
EMG stands for "electromyography", which means
the measurement of muscle activity. Neurotrac EMG devices - Neurotrac ETS and
Neurotrac Simplex - measure muscle activity in microvolts (µV), whilst
measuring duration of muscle
contractions and muscle releases in seconds.
EMG units and their readings can differ and as
such it is not possible to accurately state what a normal measurement for a
given muscle is. However, based on the experience with Neurotrac EMG devices,
expected measurements and readings are outlined as follows:
 | Muscle Rest/Work Measurements |
Muscle begins to rest when a reading of 4 µV is
shown. The lower the reading - the more relaxed is the muscle state. At the
beginning of treatment and often even some weeks later, it may not be possible
to achieve such low readings. However, elevated measurements at this point in
time (assessment) should not give a reason for concern.
Point to consider: When performing the
measurements it is important to remember that the body's positioning affects the
readings. The activities within the pelvic floor muscles as well as the
measurements differ depending on lying down, sitting or standing position.
Measurements done whilst standing are naturally a little higher than those
achieved while sitting or lying down. This is because the muscles are most
active when standing.
Pelvic Muscle (PM) readings that can be
expected when exercising Pelvic Floor Muscles in a sitting position:
|
Pelvic Muscle State |
Value in µV |
Grading |
|
PM at rest |
3 - 7 µV |
when < 3
= excellent |
|
PM at work |
12 - 20 µV |
when > 20 =
very good |
|
PM contraction time |
0.6 - 1 second |
< 0.6 =
very good |
|
PM release time |
0.6 - 1 second |
< 0.6 =
very good |
As indicated above, these values can be higher
for exercises done while standing up and lower if lying down.
 | Muscle Contraction Times |
Muscle contraction is measured in seconds. The
faster the response - the more developed and the faster twitching muscle fibres
are. When the onset of contraction is slow (i.e. 1.2 seconds or more) -
most people will achieve a significant improvement with regular pelvic floor
exercises.
 | Muscle Release Times |
Muscle release is also measured in seconds. The
release time as similar to the muscle contraction time. The release time that is
1.2 seconds or more will improve with regular pelvic floor exercises.
 | How often should pelvic floor exercises
be conducted? |
Using Simplex or ETS conduct 5 rapid
contractions and releases - rest for 2 minutes - repeat 5 rapid contractions and
releases. This exercise will improve fast twitch muscle fibres.
Rest for 5 minutes. Then set work/rest times
for 5 seconds and repeat 5 times.
Rest for 5 minutes. Then repeat as in section 2
above.
Repeat the same as in 1 - 3 sections above
later in the day (i.e. exercise pelvic muscles twice daily) for 4 weeks/1 month.
In the second month increase the work/rest
times to 10 - 15 seconds with 5 repetitions. This regime will strengthen the
muscles and increase endurance.
 | Continuous Pelvic Floor Exercise Regime |
During the second month of exercising, the
muscles should feel stronger. The strength should be confirmed by
readings/measurements. If results are satisfactory - either continue with daily
regime or reduce it to 3 - 4 times per week for 3 months. If subsequently good
stable results are achieved, reduce the sessions to 2 - 3 times per week.
Recommendation
Pelvic Floor Fitness is of paramount importance
to overall health, lifetime continence and good sexual function. We urge
everyone who has concerns to consult their healthcare professional for
appropriate advice or for further specialist referral.

Neurotrac Pelvic Floor
Assessment Devices
NeuroTrac ETS EMG
triggered stand alone unit
costs
£258.00 + VAT (£303.15)
Neurotrac
Simplex costs £85.10 + VAT (£99.99)
i.
Optional Software
for use with Neurotrac ETS and Neurotrac Simplex costs £200.00 + VAT (£235.00)
*This product can be purchased
without VAT providing that a VAT exemption certificate is completed
and submitted in our online shop.
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