JACIII Vol.27 No.6 pp. 1137-1141
doi: 10.20965/jaciii.2023.p1137


Urinary Sodium/Potassium Ratio Index Estimates Ionic Balance in Humans

Yutaka Yoshida ORCID Icon, Yuta Tarusawa, Asahi Nishimura, and Emi Yuda ORCID Icon

Graduate School of Information Sciences, Tohoku University
6-3-09 Aza-Aoba, Aramaki, Aoba-ku, Sendai, Miyagi 980-8579, Japan

Corresponding author

August 27, 2022
July 18, 2023
November 20, 2023
urinary sodium/potassium (U-Na/K) ratio, compact ion meter (CIM), blood pressure (BP) estimation, ion balance

This study measured the urinary sodium/potassium (U-Na/K) ratio using a compact ion meter to verify whether the U-Na/K ratio can estimate human blood pressure (BP) and ionic balance. The U-Na/K ratio and BP were measured in five healthy participants (including one female) after urination for at least two days per person, and lifestyle information, such as exercise and diet, were recorded at the time of measurement. Analysis of the measured data at 57 points revealed no significant difference in the U-Na/K ratio and BP, but a significant decrease in the U-Na/K ratio was observed after exercise accompanied by sweating (P = 0.01). Although previous studies have demonstrated that sodium is released by sweating, its measurement is difficult. Measuring sodium/potassium ratio is useful for preventing heatstroke and may serve as an explanatory variable for sweating and exercise intensity.

U-Na/K of before and after workout.

U-Na/K of before and after workout.

Cite this article as:
Y. Yoshida, Y. Tarusawa, A. Nishimura, and E. Yuda, “Urinary Sodium/Potassium Ratio Index Estimates Ionic Balance in Humans,” J. Adv. Comput. Intell. Intell. Inform., Vol.27 No.6, pp. 1137-1141, 2023.
Data files:
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