EMG Biofeedback Improves Performance!

EMG Biofeedback Improves Performance!

My clients trained with the BTS EMG experience gains of 20-60 watts, without significant impact on HR, cadence, or percieved effort, AFTER the improvements gained from proper positioning.


EMG analysis and biofeedback.

It is possible to train muscles to be more efficient — firing with greater acceleration, amplitude, frequency and latency — within 5-10 minutes, using biofeedback and verbal coaching techniques.  These improvements are real — indicated by real-time muscle recording — and enduring.

I’ve decided to refine and expand the use of EMG for cyclists:

BTS Bioengineering

26 Jun 2011

Dear Professor Balser,

Further to our email exchange, I have pleasure in sending you a quotation for the BTS wireless EMG system the FreeEMG300 as follows.

The FREEEMG300 has been created for sport applications because has been specifically designed for dynamic acquisitions. BTS performed, before to release the device, detailed test  in one of the worst condition possible: athletes running 400 meters and bikers on the indoor bicycle ring

The results led us to improve particular features:

  • ·         extremely reduced weight: every probes weights less than 8gr. In this way they can be fixed directly on the skin through standard Ag/Cl electrodes without additional adhesive tape. For the same reason the inertial movement (even in the more challenging situation) are reduced and virtually not present: the final signal does not present in this way artifacts due to the relative movements between skin/probe

The other advantage of this design is that the probes can be placed on the subject WIHTOUT additional tape, making the preparation quick and easy.

  • ·         variable geometry: the electrodes can be adapted to all the muscles (which differ for size and shape)
  • ·         solid state buffer memory for the Virtual Wire Function: every probes can store up to 180 seconds of data. In this way even if there are problems in the wireless transmission the data is stored and re-send when the communication is re-established. The result is an always reliable signal even when the probes are out of the transmission range.

The transmission between probes and Patient Unit use a certified Wi-Fi protocol which means that both probes and patient unit double check if the packages sent by probes correspond to the one received. In case of discrepancies every package is re-sent. With this protocol the solid memory is fundamental because can store as I wrote you before even in the worst case (total transmission black out) up to 180 sec of data. The transmission raged reached with this technology is up to 50 meters from the patient unit to the probes.

  • ·         More than that every probe, which has a 16bit A/D converter, has a dedicated channel for transmission. The patient unit in fact is designed, according to the configuration, with up to 16 different channels to receive the most accurate data without compromises.

All the technological solutions used lead just to one practical goal: the MOST ACCURATE AND RELIABLE EMG signal.

The FREEEMG300 has also wireless footswitches (right side of the picture) to analyze the gait cycles and automatically detect heel strike, toe off etc etc.. And can be integrated with EGN (electrogoniometers) and accelerometers.

The FreeEMG300 is designed with a totally new hardware created to provide the best quality signal ever even in the most critical situations (multiple WiFi transmissions, analogue transmissions, long range, …). Also the FreeEMG300 is capable to collect data with an acquisition frequency up to 4Khz, making the system suitable for fine wire electrodes.

Concerning the video analysis the BTS FREEEMG300 can be integrated with our BTS VIXTA system providing video data fully synchronized with EMG to create an analysis that can correlate the EMG activity with specific movements observed by the video cameras. The video controller can use up to 4 TVCs simultaneously. The TVCs are portable and mounted on mobile tripods. Typically the standard configuration is with 2 TVCs placed respectively in the sagittal and in the frontal plan to obtain a 3D (two bi-dimensional planes) subject evaluation. Every lab can however customize the TVCs configuration to obtain different views (e.g. TVCs in the same plane but with different zoom to evaluate the general movement AND a detail).

Finally BTS Bioengineering can acquire Force Platform signal controlling everything (EMG, Video and kinetic) from one software and workstation integrating EVERYTHING in one single file providing an accurate athlete’s evaluation.

Those are several reasons why BTS Bioengineering has been chosen by the top European soccer teams, the Italian Olympic committee and the most important the street bike teams such as MAPEI. In collaboration with them we designed a specific lab to evaluate athletes performances and to optimize their posture on the bicycle seat.






Labs that work in sport the Performance Suite is also available. This package includes protocols designed to evaluate several sports gesture such as cycling, running, squatting, jumping, golf, tennis, and ski with the aim of improving performance, optimizing coaching, averting injuries and structuring rehabilitation programs.

With BTS software, L@bnet, your Lab can be 24/7 connected with our headquarters in Italy and US and can be remotely checked up for diagnostic purposes. Software upgrade and protocol sharing have never been easier and faster.

Further than that through L@bnet your lab will have access to a network composed by universities and hospitals that work together for the realization of new protocols and to share experiences and suggestions.