Making Physiology Happen


RS-EMGx EMG System

The RS-EMGx EMG system is available as a 4 channel or 8 channel system.

Measure and Analyze:

  • Surface EMG
  • Maximal voluntary contraction (MVC)
  • Muscle force
  • Fatigue
  • Strength and Performance Testing


  • Portable, USB powered
  • Color coded leads
  • Easy export
  • Built in Journal for creating reports
  • Lab Site license included
  • Free software updates.
  • Record multiple channels of EMG, ECG, EOG simultaneously from a single subject.
  • EMG analysis included.

The RS-EMG4 system includes:

  • IX-BIO4  Four Channel Biopotential Recorder
  • C-ISO-SL9: a set of 9 snap electrodes.
  • LabScribe Recording and Analysis Software for Macintosh or Windows PC
  • Disposable EMG electrodes ( pack of 50)

The RS-EMG8 system includes:

  • IX-BIO8  Eight Channel Biopotential Recorder
  • C-ISO-SL17: a set of 17 snap electrodes.
  • LabScribe Recording and Analysis Software for Macintosh or Windows PC
  • Disposable EMG electrodes ( pack of 50)


Kinesiology is the study of human and nonhuman animal-body movements, performance, and function by applying the sciences of biomechanics, anatomy, physiology, psychology, and neuroscience. When studying kinesiology,  surface electromyography  (sEMG or Surface EMG) is the measurement of choice.  The IX-BIOx enables 4 channels of EMG recordings, or a combination of EMG and ECG recordings.

White Papers:

Perform MVC calculations in LabScribe.

EMG analysis using LabScribe


ECG signals can be measured with the IX-BIOx.  Measuring 2 channels of ECG, Lead I and Lead II allows LabScribe software to calculate Lead III, aVR, aVF and aVL .  EMG signals can be measured at the same time as the ECG signals.

White Papers:

Application note on using the IX-BIO4-SA for recording 6 lead Rat ECG.

Analysing ECG’s recorded in LabScribe with Kubios HRV



Analog Inputs 4 (IX-BIO4) or 8 (IX-BIO8)
Input Range 2400mV, 1200mV, 800mV,
400mV, 200mV, 100mV,
50mV, 25mV, 12mV
A/D Converter
Sampling Speed 20k Samples/sec per channel simultaneous
Resolution 16 Bit
System noise < 6 microVolts
Interface USB
Enclosure Plastic
Power USB
Warranty and Upgrades Protected by a 3 year warranty


Papers about ECG using iWorx systems on Google Scholar Papers about EMG using iWorx systems on Google Scholar Citations for IX-BIO4 and IX-BIO8:
  • Zhu, Canzhan, et al. "Phloroglucinol averts isoprenaline hydrochloride induced myocardial infarction in rats." Drug development research (2019).
  • Gottschall, Jinger S., Bryce Hastings, and Zachary Becker. "Muscle Activity Patterns Do Not Differ Between Push-Up and Bench Press Exercises." Journal of applied biomechanics(2018): 1-20.
  • Craighead, Daniel H., et al. "Ingestion of TRP channel agonists attenuates exercise‐induced muscle cramps." Muscle & Nerve (2017).
  • Looney, David P., et al. "Electromyographical and Perceptual Responses to Different Resistance Intensities in a Squat Protocol: Does Performing Sets to Failure With Light Loads Produce the Same Activity?." The Journal of Strength & Conditioning Research 30.3 (2016): 792-799.
  • Flanagan, Shawn D., et al. "Concurrent Validity of the Armour39 Heart Rate Monitor Strap." The Journal of Strength & Conditioning Research 28.3 (2014): 870-873.
  • Earp, Jacob E., et al. "Regional Surface Electromyography of the Vastus Lateralis During Strength and Power Exercises." The Journal of Strength & Conditioning Research 30.6 (2016): 1585-1591.
  • Kh Dehkordi, Parastoo, et al. "Comparison of Different Methods for Estimating Cardiac Timings: A Comprehensive Multimodal Echocardiography Investigation." Frontiers in physiology 10 (2019): 1057.

Part Number: RS-EMGx