Seismofit® System

Cardiorespiratory fitness (CRF) measured as VO2-max may be estimated by the Seismofit® System by use of seismocardiography.

Seismofit® measures vibrations arising from heart beats and transmitted to the chest. Each heart has its own signature relating to opening and closing of valves and the relaxation and contraction of the heart chambers. The Seismofit® device is small in size, measuring only 3 cm in width, 5 cm in length and 1,5 cm in height. The devices weighs less than 25 grams. The device is powered by a replaceable battery and features a high performance accelerometer and Bluetooth® Low Energy (BLE) communication. 

The system further includes an adhesive patch, a smartphone App and a cloud-based algorithm.

Seismofit with iPhone App

Recording the signal

Performing a recording with the Seismofit® System is easy and requires only the Seismofit® device and a smartphone to work.

  1. The Seismofit® device is attached to the adhesive patch
  2. The Seismofit® device is then attached to the subject, on the lower part of the sternum. The subjects should be in resting supine position during the whole procedure.
  3. In the companying app, subject height, weight, age and gender is entered.
  4. The recording of the signal is started. This takes about 45 seconds.
  5. When the recording is done, the signal is transferred to the phone and then to our secure servers, where the signal is analyzed.
  6.  The result of the signal analysis is returned to the app, that presents the personal VO2-max value.

Fast and Reliable

The Seismofit® System is fast and easy to use. The sensor communicates with the companying app via Bluetooth® Low Energy (BLE). The App communicates with our secure Microsoft Azure server. Microsoft Azure reports 99.9% uptime, ensuring that you can always perform an analysis and get a VO2-max estimation.