Validity of the Hexoskin intelligent textile criterion for evaluating cardiorespiratory function in a healthy population
Year: 2018
Type: dissertation
Abstract: Hexoskin is an intelligent clothing, which allows the remote monitoring of physiological signals in real-time. These signals include cardiorespiratory function, which is characterized by various parameters such as heart rate, respiratory frequency and ventilation. Aim. The objective of this study is to measure the intensity of the relationship between cardiorespiratory variables measured with Hexoskin and those measured with standard reference equipment (contributing criterion validity study). Methods: Thirty voluntary and healthy participants (15 men and 15 women) were recruited to participate in this validation study. The variable of interest is the cardiorespiratory function measured simultaneously with the reference equipment (COSMED system) and the Hexoskin. Participants were subjected to a maximum stress test during treadmill walking according to the BSU/Bruce RAMP protocol, which measures heart rate, respiratory rate and ventilation and estimates the maximum oxygen volume (VO2max). To document the validity of the Hexoskin during efforts at submaximum intensities, the participants then carried out three walking tests on the treadmill at four intensities: 2 Mets, 3 Mets, 4Mets and 6 Mets. Descriptive statistical analyses (RMS error, Bland-Altman graph) and Pearson correlation coefficients were performed. Results: Maximum stress test results show that the heart rate (r = 0.97 to 0.99; RMS = 0.05±0.02; p<0.05), respiratory rate (r = 0.89 to 0.99; RMS = 0.07±0.03; p<0.05) and ventilation (r = 0.16 to 0.37; RMS = 0.89± The results of the submaximum stress tests are as follows for heart rate at 2 Mets (r = 0.99; RMS= 0.03±0.003); 3 Mets (r = 0.99;0.04±0.017); 4 Mets (r = 0.99;0.02±0.015) and 6 Mets (r =0.99;0.03±0.005). For respiratory frequency, the results are 2 Mets (r = 0.98; RMS = 0.09±0.003); 3 Mets (r = 0.99;0.06±0.003); 4 Mets (r = 0.99;0.03±0.008) and 6 Mets (r = 0.98;0.04±0.006). Finally, the results of the breakdown at the 4 physical activity intensities are as follows: 2 Mets (r =0.55; MSR = 0.38±0.02); 3 Mets (r =0.48;0.43±0.04); 4 Mets (r =0.45;0.52±0.03) and 6 Mets (r =0.43;0.62±0.03). Conclusion: the excellent correlation and low RMS error for heart rate, respiratory rate at maximum effort and submaximum stress confirm the concurrent validity of Hexoskin for these two parameters. The lack of correlation for the breakdown may be explained by the estimation equation for this parameter.
Author: Mouzoune, Imane
Institution: Université de Sherbrooke
Language: French
Subfield: Biomedical Engineering
Field: Engineering
Domain: Physical Sciences
Open Access status: green
OpenAlex ID: W7201923213