Personalized Wearable Electrodermal Sensing-Based Human Skin Hydration Level Detection for Sports, Health and Wellbeing

Abstract

Personalized hydration level monitoring play vital role in sports, health, wellbeing and safety of a person while performing particular set of activities. Clinical staff must be mindful of numerous physiological symptoms that identify the optimum hydration specific to the person, event and environment. Hence, it becomes extremely critical to monitor the hydration levels in a human body to avoid potential complications and fatalities. Hydration tracking solutions available in the literature are either inefficient and invasive or require clinical trials. An efficient hydration monitoring system is very required, which can regularly track the hydration level, non-invasively. To this aim, this paper proposes a machine learning (ML) and deep learning (DL) enabled hydration tracking system, which can accurately estimate the hydration level in human skin using galvanic skin response (GSR) of human body. For this study, data is collected, in three different hydration states, namely hydrated, mild dehydration (8 hours of dehydration) and extreme mild dehydration (16 hours of dehydration), and three different body postures, such as sitting, standing and walking. Eight different ML algorithms and four different DL algorithms are trained on the collected GSR data. Their accuracies are compared and a hybrid (ML+DL) model is proposed to increase the estimation accuracy. It can be reported that hybrid Bi-LSTM algorithm can achieve an accuracy of 97.83%.

Pilot Study of a Wearable Hydration Monitor in Haemodialysis Patients: Haemodialysis Outcomes & Patient Empowerment Study 02

“…The research into consumer-grade wearable hydration sensors is nascent. A small number of these devices are available on the market, yet published studies evaluating their validity are limited [14][15][16][17]. Consumer-grade devices have employed bioimpedance and sodium sensor technology to monitor hydration levels in healthy subjects [14][15][16].…”

“…A small number of these devices are available on the market, yet published studies evaluating their validity are limited [14][15][16][17]. Consumer-grade devices have employed bioimpedance and sodium sensor technology to monitor hydration levels in healthy subjects [14][15][16]. These products are calibrated to monitor hydration levels in health and would need to be adjusted to detect overhydration and skin sodium excess in patients without residual urine output [18].…”