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

Background: The aim of this clinical study was to reveal the relationship between body dehydration and oral mucosa moisture measured by use a capacitance sensor for epithelial moisture. Methods: following parameters were recorded from each one 19 athletes in one-week period high-intensity exercise at U-23 Triathlon Training Camp summer winter; weight, urine specific gravity, moisture, subjective thirst, throat thirst (within 30 min after waking before breakfast 7:00 a.m. on Day2 Day6). Results: There no significant differences mean values Day6 both measurements winter. had moderate negative correlation with gravity (p < 0.05, r = ?0.45). Conclusions: This suggests that mucosal determined using an moisture-checking device could be potential index assessing during sports activities.