Potential Assessment of Dehydration during High-Intensity Training Using a Capacitance Sensor for Oral Mucosal Moisture: Evaluation of Elite Athletes in a Field-Based Survey
Gen Tanabe,
Tetsuya Hasunuma,
Yuto Inai,
Yasuo Takeuchi,
Hiroaki Kobayashi,
Kairi Hayashi,
Shintaro Shimizu,
Nana S Kamiya,
Hiroshi Churei,
Yuka I Sumita,
Katsuhiko Suzuki,
Naoki Moriya,
Toshiaki Ueno
Affiliations
Gen Tanabe
Department of Sports Medicine/Dentistry, Graduate School of Medical and Dental Sciences, Tokyo Medical and Dental University, Tokyo 113-8510, Japan
Tetsuya Hasunuma
Public Interest Incorporated Association, Japan Triathlon Union, Tokyo 160-0013, Japan
Yuto Inai
Public Interest Incorporated Association, Japan Triathlon Union, Tokyo 160-0013, Japan
Yasuo Takeuchi
Department of Periodontology, Graduate School of Medical and Dental Sciences, Tokyo Medical and Dental University, Tokyo 113-8510, Japan
Hiroaki Kobayashi
Department of Periodontology, Graduate School of Medical and Dental Sciences, Tokyo Medical and Dental University, Tokyo 113-8510, Japan
Kairi Hayashi
Department of Sports Medicine/Dentistry, Graduate School of Medical and Dental Sciences, Tokyo Medical and Dental University, Tokyo 113-8510, Japan
Shintaro Shimizu
Department of Sports Medicine/Dentistry, Graduate School of Medical and Dental Sciences, Tokyo Medical and Dental University, Tokyo 113-8510, Japan
Nana S Kamiya
Department of Sports Medicine/Dentistry, Graduate School of Medical and Dental Sciences, Tokyo Medical and Dental University, Tokyo 113-8510, Japan
Hiroshi Churei
Department of Sports Medicine/Dentistry, Graduate School of Medical and Dental Sciences, Tokyo Medical and Dental University, Tokyo 113-8510, Japan
Yuka I Sumita
Department of Maxillofacial Prosthetics, Graduate School of Medical and Dental Sciences, Tokyo Medical and Dental University, Tokyo 113-8510, Japan
Katsuhiko Suzuki
Faculty of Sport Science, Waseda University, Saitama 359-1192, Japan
Naoki Moriya
Public Interest Incorporated Association, Japan Triathlon Union, Tokyo 160-0013, Japan
Toshiaki Ueno
Department of Sports Medicine/Dentistry, Graduate School of Medical and Dental Sciences, Tokyo Medical and Dental University, Tokyo 113-8510, Japan
Background: The aim of this clinical study was to reveal the relationship between body dehydration and oral mucosa moisture measured by the use of a capacitance sensor for oral epithelial moisture. Methods: The following clinical parameters were recorded from each one of 19 athletes in a one-week period of high-intensity exercise at the U-23 Triathlon Training Camp in summer and winter; body weight, urine specific gravity, oral mucosa moisture, subjective oral thirst, and subjective throat thirst (within 30 min after waking and before breakfast at 7:00 a.m. on Day2 and Day6). Results: There were no significant differences in the mean values of body weight, urine specific gravity, oral mucosa moisture, oral thirst, and throat thirst between Day2 and Day6 in both measurements in summer and winter. The oral mucosa moisture had a moderate negative correlation with urine specific gravity (p < 0.05, r = −0.45). Conclusions: This study suggests that oral mucosal moisture determined using an oral moisture-checking device could be a potential index for assessing dehydration during sports activities.
