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Physiological measurement comparison from a portable sensor system and standard laboratory equipment during graded exercise.
Powell-JB; Coca-A; Kim-J-H; Williams-WJ; Roberge-RJ
Med Sci Sports Exerc 2012 May; 44(5S)(Suppl 2):925
Physiological monitoring in real time can offer valuable information on the biomedical status of workers engaged in strenuous activities. PURPOSE: This study compares the accuracy of a commercially available portable sensor system to standard laboratory physiological monitoring equipment for real-time monitoring of heart rate (HR) and respiratory rate (RR) responses during treadmill exercise. METHODS: Six healthy subjects completed a maximal graded exercise test (GXT) wearing the portable sensor system and a standard laboratory physiological monitoring system. The treadmill protocol consisted of stages in which workload increased every 30 seconds starting at 1.7mph/0% incline and ending at 3.5mph/25% incline. The study variables, HR and RR, were recorded simultaneously breathe by breathe using the two systems. The variables were then summarized at time points of rest and workloads (O2) equal to 30, 50, 70, 90 and maximum. Paired sample t-tests and Spearman correlation coefficients (rs) were calculated to compare the variables. CONCLUSION: The results of this study show HR and RR measurements by portable sensor system in subjects performing GXT are comparable to those from a standard physiological monitoring system. However, there was a greater HR measurement variability during rest and exercise less than 50% VO2max, while HR and RR measurement accuracy increased at higher exercise intensities. This study demonstrates the accuracy of the portable sensor system for real-time monitoring of physiological parameters and suggests usefulness for physiological research in the field.
Physiology; Physiological-factors; Monitoring-systems; Workers; Physical-exercise; Heart-rate; Respiratory-rate
Issue of Publication
Agriculture, Forestry and Fishing
Medicine and Science in Sports and Exercise