Bioharness(™) multivariable monitoring device: part. I: validity

Area of Science:

• Exercise Physiology
• Human Performance Monitoring
• Biotechnology

Background:

• The Bioharness(™) is a wearable device for monitoring physiological data during human performance.
• Limited data exists on the validity of the Bioharness(™) across its various physiological measures.
• Assessing the accuracy of such devices is crucial for reliable data collection in sports science and exercise physiology.

Purpose of the Study:

• To evaluate the validity of the five physiological variables measured by the Bioharness(™) monitoring system.
• To compare Bioharness(™) measurements against established laboratory-grade measurement devices.
• To determine the accuracy of the Bioharness(™) under controlled laboratory conditions.

Main Methods:

• Twenty-two healthy males underwent laboratory-based treadmill and cycle ergometer tests.
• Physiological variables including heart rate (HR), breathing frequency (BF), accelerometry (ACC), skin temperature (ST), and posture (P) were measured.
• Measurements were compared against criterion devices such as a Polar T31 heart rate monitor, Cortex Metalyser, and goniometer.

Main Results:

• Strong correlations (r = .89 to .99) were found for HR, BF, ACC, and P, indicating good validity.
• Skin temperature (ST) showed a moderate correlation (r = 0.76).
• Measurement precision for HR and BF decreased significantly at treadmill velocities of 10 km·h⁻¹ and above.

Conclusions:

• The Bioharness(™) demonstrates validity as a multi-variable monitoring device within a controlled laboratory environment.
• Users should be aware of the reduced precision of HR and BF measurements at higher exercise intensities.
• Understanding the limitations of wearable monitoring technology is essential for accurate application by exercise scientists.