Assessing stability and accuracy of a novel commercial wearable near-infrared spectroscopy device

Ivo da Mota Moreira; Thierry R. Willigenburg; Wout J. W. Kregting; Erwin R. C. Van Steijn; Marianne J. Floor-Westerdijk; Willy N. J. M. Colier

doi:10.1117/12.2657434

6 March 2023 Assessing stability and accuracy of a novel commercial wearable near-infrared spectroscopy device

Ivo da Mota Moreira, Thierry R. Willigenburg, Wout J. W. Kregting, Erwin R. C. Van Steijn, Marianne J. Floor-Westerdijk, Willy N. J. M. Colier

Author Affiliations +

Proceedings Volume 12375, Biophotonics in Exercise Science, Sports Medicine, Health Monitoring Technologies, and Wearables IV; 123750A (2023) https://doi.org/10.1117/12.2657434
Event: SPIE BiOS, 2023, San Francisco, California, United States

Abstract

Athletes can optimize training performance by measuring the oxygenation level in their muscles using Near-infrared spectroscopy (NIRS). NIRS allows athletes to measure local muscle oxygenation changes and assess performance indicators such as optimal pace or intensity during endurance activities and optimal recovery in endurance and strength activities. A novel NIRS sensor (Train.Red FYER) was developed to enable these measurements. In this this study the stability, accuracy, intra- and inter-variability of muscle oxygenation saturation (SmO2) in 10 sensors using two different phantoms and in-vivo tests, were SmO2 was defined as the percentage of the ratio of oxygenated to total hemoglobin. Stability of three sensors was tested during 3 hours on each phantom. Intra-variability of three sensors was assessed on four different days by two different operators by repositioning the sensor over the same location on both phantoms and on the forearm during resting position. Intra-variability was also assessed during vascular occlusion tests (VOT). Intervariability was assessed between 10 sensors on both phantoms on four different days. For analysis coefficient of variance (CV) was calculated. The sensor showed to be stable on both phantoms (<1% SmO2). Precision tests showed a larger inter-variability (<2% SmO2) than intra-variability (<1% SmO2). Inter-day and inter-operator variability on phantoms were also small (<4% SmO2). In vivo tests on the forearm and VOT showed higher variability (<5% SmO2) than on phantoms. It was shown a stable and precise NIRS sensor for the measurement of SmO2.

Conference Presentation

Citation Download Citation

Ivo da Mota Moreira, Thierry R. Willigenburg, Wout J. W. Kregting, Erwin R. C. Van Steijn, Marianne J. Floor-Westerdijk, and Willy N. J. M. Colier "Assessing stability and accuracy of a novel commercial wearable near-infrared spectroscopy device", Proc. SPIE 12375, Biophotonics in Exercise Science, Sports Medicine, Health Monitoring Technologies, and Wearables IV, 123750A (6 March 2023); https://doi.org/10.1117/12.2657434

ACCESS THE FULL ARTICLE

INSTITUTIONAL
Select your institution to access the SPIE Digital Library.

SELECT YOUR INSTITUTION

PERSONAL
Sign in with your SPIE account to access your personal subscriptions or to use specific features such as save to my library, sign up for alerts, save searches, etc.

PERSONAL SIGN IN

No SPIE Account? Create one

PURCHASE THIS CONTENT

SUBSCRIBE TO DIGITAL LIBRARY

50 downloads per 1-year subscription

Members: $195

Non-members: $335 ADD TO CART

25 downloads per 1 - year subscription

Members: $145

Non-members: $250 ADD TO CART

PURCHASE SINGLE ARTICLE

Includes PDF, HTML & Video, when available