The Perifit Care probe contains two sensors:
The superficial sensor, measuring pressure near the vaginal opening.
The deep sensor, measuring pressure deeper in the vagina, close to the cervix.
Those sensors measure pressure along orthogonal axes:
the superficial sensor measures pressure in the body front-to-rear plan (i.e. along the axis that passes through the lotus LED and the power button)
the deep sensor measures forces along the body left-to-right plan
Why those axes?
The orientation of the superficial sensor is aligned with the main pulling direction of the pelvic floor muscles.
The orientation of the deep sensor reduces the sensitivity to artifacts like breathing and organs' weight.
What does each sensor measure?
Superficial sensor
Vaginal opening pressure is impacted by:
the passive stretch of the vaginal wall
the pelvic floor baseline tone
the voluntary pelvic floor contractions
Deep sensor
Deep vaginal pressure is impacted by:
gravity pulling organs down
the diaphragm lowering at inspiration
the unwanted intra-abdominal pressure
Calibrationbefore games takes care of filtering out some pressures that are not useful for pelvic floor training, such as the vaginal wall stretch, the baseline tone, and gravity.
Perifit Care can thus assess your voluntary pelvic floor contractions (that you want to train) and the intra-abdominal pressure (that you want to minimize), such as when coughing or bearing down.
When you train, the Contraction Quality Meter displays real-time feedback on how well you're able to minimize the intra-abdominal pressure.