Performance Assessment of a Commercial Continuous-Wave Near-Infrared Spectroscopy Tissue Oximeter for Suitability for Use in an International, Multi-Center Clinical Trial

Cortese, Lorenzo; Zanoletti, Marta; Karadeniz, Umut; Pagliazzi, Marco; Yaqub, M. Atif; Busch, David R.; Mesquida, J.; Durdurán, Turgut

doi:10.3390/s21216957

Cited by 14 publications

(12 citation statements)

References 44 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…Nevertheless, it is important to notice that single measurements variability was on average approximately 0.7% (%CV). This observation was slightly lower compared to previous studies [24], and again emphasizes the accuracy of the sensor regarding the variability of the hemodynamics of the human tissue. In conclusion, it was found that intra-sensor variability was slightly higher in phantoms compared with in vivo measurements, and reproducibility on different days is as expected higher in vivo measurements.…”

Section: Test B -Intra-variability Due To Device Repositioning Over T...contrasting

confidence: 74%

“…These results suggest as well that the Train.Red Fyer sensor can be stable for a long period of time, under different conditions, not variating significantly when conducted by different operators. We did not observe the presence of a period of warmup as Cortese et al [24] experienced. The CV obtained in this study is comparable to what was reported in the literature [24] even if the recording period is different, i.e.,3hrs in our study VS 7hrs in the existing study; although they excluded the first 1hr for the warm-up period.…”

Section: Test a -Stability During Duration Measurementscontrasting

confidence: 63%

“…We did not observe the presence of a period of warmup as Cortese et al [24] experienced. The CV obtained in this study is comparable to what was reported in the literature [24] even if the recording period is different, i.e.,3hrs in our study VS 7hrs in the existing study; although they excluded the first 1hr for the warm-up period.…”

Section: Test a -Stability During Duration Measurementscontrasting

confidence: 63%

“…The second test (test D) consisted of a vascular occlusion test (VOT) with the probe located in the same position, consisting of five minutes of rest, followed by five minutes of arterial occlusion and three minutes of recovery. The analysis of VOT was based on and modified from previous studies [24,25]. Therefore, SmO2 at baseline, deoxygenation slope (DeOx), reoxygenation slope (ReOx), maximum SmO2 (SmO2max), minimum SmO2 (SmO2min) and rise time were analyzed.…”

Section: In Vivo Measurementsmentioning

confidence: 99%

See 3 more Smart Citations

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

Moreira¹,

Willigenburg²,

Kregting³

et al. 2023

Biophotonics in Exercise Science, Sports Medicine, Health Monitoring Technologies, and Wearables IV

View full text Add to dashboard Cite

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.

show abstract

Section: Test B -Intra-variability Due To Device Repositioning Over T...contrasting

confidence: 74%

Section: Test a -Stability During Duration Measurementscontrasting

confidence: 63%

Section: Test a -Stability During Duration Measurementscontrasting

confidence: 63%

Section: In Vivo Measurementsmentioning

confidence: 99%

See 2 more Smart Citations

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

Moreira¹,

Willigenburg²,

Kregting³

et al. 2023

Biophotonics in Exercise Science, Sports Medicine, Health Monitoring Technologies, and Wearables IV

View full text Add to dashboard Cite

show abstract

“…NIRS provides non-invasive and non-ionizing technology that has been used to measure variations in oxygenated and deoxygenated hemoglobin concentrations in various human tissues [32][33][34]. It has been shown that NIRS provides consistent readings with other measurement modalities in various applications, including cerebral blood flow [35] and skeletal muscle contractions [36].…”

Section: Nirsmentioning

confidence: 99%

A Novel Methodology for the Synchronous Collection and Multimodal Visualization of Continuous Neurocardiovascular and Neuromuscular Physiological Data in Adults with Long COVID

Feng

Monaghan

Jennings

et al. 2022

Sensors

View full text Add to dashboard Cite

Background: Reports suggest that adults with post-COVID-19 syndrome or long COVID may be affected by orthostatic intolerance syndromes, with autonomic nervous system dysfunction as a possible causal factor of neurocardiovascular instability (NCVI). Long COVID can also manifest as prolonged fatigue, which may be linked to neuromuscular function impairment (NMFI). The current clinical assessment for NCVI monitors neurocardiovascular performance upon the application of orthostatic stressors such as an active (i.e., self-induced) stand or a passive (tilt table) standing test. Lower limb muscle contractions may be important in orthostatic recovery via the skeletal muscle pump. In this study, adults with long COVID were assessed with a protocol that, in addition to the standard NCVI tests, incorporated simultaneous lower limb muscle monitoring for NMFI assessment. Methods: To conduct such an investigation, a wide range of continuous non-invasive biomedical sensing technologies were employed, including digital artery photoplethysmography for the extraction of cardiovascular signals, near-infrared spectroscopy for the extraction of regional tissue oxygenation in brain and muscle, and electromyography for assessment of timed muscle contractions in the lower limbs. Results: With the proposed methodology described and exemplified in this paper, we were able to collect relevant physiological data for the assessment of neurocardiovascular and neuromuscular functioning. We were also able to integrate signals from a variety of instruments in a synchronized fashion and visualize the interactions between different physiological signals during the combined NCVI/NMFI assessment. Multiple counts of evidence were collected, which can capture the dynamics between skeletal muscle contractions and neurocardiovascular responses. Conclusions: The proposed methodology can offer an overview of the functioning of the neurocardiovascular and neuromuscular systems in a combined NCVI/NMFI setup and is capable of conducting comparative studies with signals from multiple participants at any given time in the assessment. This could help clinicians and researchers generate and test hypotheses based on the multimodal inspection of raw data in long COVID and other cohorts.

show abstract

Muscle Oximetry in Sports Science: An Updated Systematic Review

Perrey,

Quaresima,

Ferrari

2024

Sports Med

View full text Add to dashboard Cite

Background In the last 5 years since our last systematic review, a significant number of articles have been published on the technical aspects of muscle near-infrared spectroscopy (NIRS), the interpretation of the signals and the benefits of using the NIRS technique to measure the physiological status of muscles and to determine the workload of working muscles. Objectives Considering the consistent number of studies on the application of muscle oximetry in sports science published over the last 5 years, the objectives of this updated systematic review were to highlight the applications of muscle oximetry in the assessment of skeletal muscle oxidative performance in sports activities and to emphasize how this technology has been applied to exercise and training over the last 5 years. In addition, some recent instrumental developments will be briefly summarized. Methods Preferred Reporting Items for Systematic Reviews guidelines were followed in a systematic fashion to search, appraise and synthesize existing literature on this topic. Electronic databases such as Scopus, MEDLINE/PubMed and SPORTDiscus were searched from March 2017 up to March 2023. Potential inclusions were screened against eligibility criteria relating to recreationally trained to elite athletes, with or without training programmes, who must have assessed physiological variables monitored by commercial oximeters or NIRS instrumentation. Results Of the identified records, 191 studies regrouping 3435 participants, met the eligibility criteria. This systematic review highlighted a number of key findings in 37 domains of sport activities. Overall, NIRS information can be used as a meaningful marker of skeletal muscle oxidative capacity and can become one of the primary monitoring tools in practice in conjunction with, or in comparison with, heart rate or mechanical power indices in diverse exercise contexts and across different types of training and interventions. Conclusions Although the feasibility and success of the use of muscle oximetry in sports science is well documented, there is still a need for further instrumental development to overcome current instrumental limitations. Longitudinal studies are urgently needed to strengthen the benefits of using muscle oximetry in sports science.

show abstract

Performance Assessment of a Commercial Continuous-Wave Near-Infrared Spectroscopy Tissue Oximeter for Suitability for Use in an International, Multi-Center Clinical Trial

Cited by 14 publications

References 44 publications

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

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

A Novel Methodology for the Synchronous Collection and Multimodal Visualization of Continuous Neurocardiovascular and Neuromuscular Physiological Data in Adults with Long COVID

Muscle Oximetry in Sports Science: An Updated Systematic Review

Contact Info

Product

Resources

About