A Novel Wearable Device for Digital Health Based on Cardiac Force Index of Running Performance

Abstract

Backgrounds: Marathons and road running have become popular in recent years, sudden cardiac death may occur even in young populations. Early detection the cardiac function changes during running is imperative. Methods: This study used the American Zephyr™ product BioHarness 3.0. It can measure basic physiological parameters, including heart-rate, respiratory rate, temperature, maximum oxygen consumption and activity. Interpretation: We investigated the correlations among the 2 new physiological parameters, including cardiac force index (CFI) = weight * activity / heart rate, cardiac force ratio (CFR) = CFI of running / CFI of walking, and finish times for 3000 meters of running. After analysis of multi-variates logistic regression model, accumulation of heart activities during running was statistically significant with the qualification of the 3000-meter running test (p = 0.04). Finally, we compared the correlations of CFR(s) between runners with stronger and weaker cardiac force during 3000-meter running. In conclusion, this study results suggested that real-time CFR changes could be a predication model for the 3000-meter running performance. Funding Statement: This study was supported from the grants of AFTYGH-10752 and AFTYGH-10812, Taoyuan Armed Forces General Hospital, Taiwan, ROC. Declaration of Interests: The authors state: None declared. Ethics Approval Statement: This was a cross-sectional study which was approved by the human trial committee of the Tri-Service General Hospital, Taiwan. Approval for this study was provided by the Institutional Review Board (IRB) of the Tri-Service General Hospital, Taiwan (Approval No: TSGH- IRB-1-104-05-147).