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Related Experiment Video

Updated: Jan 25, 2026

Using Near-Infrared Spectroscopy Wearable Devices to Identify Central Versus Peripheral Limitations During Exercise
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The relation between central variables, electromyography signals and peripheral microcirculation during intensive

Anat Ratnovsky1, Ran Yanovich2, Dikla Kesner1

  • 1School of Medical Engineering, Afeka - Tel Aviv Academic College of Engineering, Israel.

Clinical Biomechanics (Bristol, Avon)
|May 12, 2019
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Summary

Transcutaneous oxygen tension can predict maximal oxygen consumption, aiding in early fatigue detection during exercise. This non-invasive method offers improved muscle performance assessment for both trained and untrained individuals.

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Area of Science:

  • Exercise Physiology
  • Sports Medicine
  • Biomedical Engineering

Background:

  • Muscle fatigue during aerobic exercise can lead to damage and injuries.
  • Identifying correlations between microcirculation, electromyography, and exercise is key for early fatigue detection.
  • This study aimed to assess muscle performance using non-invasive techniques to characterize peripheral compensation post-exercise.

Purpose of the Study:

  • To characterize peripheral compensation following intensive exercise.
  • To assess muscle performance using non-invasive techniques.
  • To explore correlations between central/peripheral microcirculation and electromyography for fatigue identification.

Main Methods:

  • Volunteers (N=14) underwent two days of measurements, including ECG and anthropometrics.
  • Maximal aerobic ability, electromyography, and cutaneous hemodynamic variables were measured during treadmill running.
  • A Bayesian network algorithm predicted ventilation based on cutaneous hemodynamic measurements.

Main Results:

  • Transcutaneous oxygen tension identified anaerobic threshold in trained and untrained subjects; electromyography only in trained.
  • Predicted ventilation values based on transcutaneous oxygen tension strongly correlated with actual values.
  • Prediction accuracy was higher in trained subjects compared to untrained.

Conclusions:

  • Transcutaneous oxygen tension can predict maximal oxygen consumption during intense exercise.
  • This non-invasive technique may improve the assessment of premature exercise fatigue.
  • Peripheral compensation characterization aids in understanding muscle performance and fatigue.