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- W2912415021 abstract "This paper investigates the performances of a head-mounted wearable device for the breath-by-breath monitoring of respiratory frequency (f <sub xmlns:mml=http://www.w3.org/1998/Math/MathML xmlns:xlink=http://www.w3.org/1999/xlink>R</sub> ) during exercise. The device exploits a new algorithm to estimate f <sub xmlns:mml=http://www.w3.org/1998/Math/MathML xmlns:xlink=http://www.w3.org/1999/xlink>R</sub> from the breathing-related pressure drops (ΔP) recorded at the nostrils level. Performances of the wearable device in measuring the breath-by-breath and 30-s average f <sub xmlns:mml=http://www.w3.org/1998/Math/MathML xmlns:xlink=http://www.w3.org/1999/xlink>R</sub> values were evaluated during two high-intensity cycling exercise tests performed in the laboratory. ΔP signals were collected from ten volunteers with the wearable device, and the simultaneous measurements with a reference instrument were performed for validation purposes. In addition, numerical simulations were carried out to reproduce the conditions expected in applied settings. Bland-Altman analysis, linear regression (r <sup xmlns:mml=http://www.w3.org/1998/Math/MathML xmlns:xlink=http://www.w3.org/1999/xlink>2</sup> ), and percentage error (%E) were used for comparing the two instruments. Experimental tests demonstrate the robustness and validity of the proposed wearable device and the related algorithm to measure the breath-by-breath f <sub xmlns:mml=http://www.w3.org/1998/Math/MathML xmlns:xlink=http://www.w3.org/1999/xlink>R</sub> (overall %E = 4.03%) and 30-s average f <sub xmlns:mml=http://www.w3.org/1998/Math/MathML xmlns:xlink=http://www.w3.org/1999/xlink>R</sub> (overall %E = 2.38%) values. Biases obtained with the breath-by-breath analysis (max. -0.06 ± 6.27 breaths/min) were higher than those obtained in the 30-s window analysis (max. -0.03 ± 1.60 breaths/min). In the simulated conditions, %E increased up to 6.65%. The proposed wearable device is suitable for a wide variety of indoor applications where the f <sub xmlns:mml=http://www.w3.org/1998/Math/MathML xmlns:xlink=http://www.w3.org/1999/xlink>R</sub> monitoring during exercise at reduced invasiveness is of great value." @default.
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- W2912415021 date "2019-06-15" @default.
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- W2912415021 title "Validation of a Wearable Device and an Algorithm for Respiratory Monitoring During Exercise" @default.
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- W2912415021 doi "https://doi.org/10.1109/jsen.2019.2899658" @default.
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