Table 2.

Participant Dehydration Status Pre- and Post-Heat-Intensive Day

	Instructor (N=6)	Student (N=12*)	Total (N=18)
Urine specific gravity pre-heat day
- Mean (SD)	1.018 (0.010)	1.018 (0.009)	1.018 (0.009)
- Min − Max	1.005 - 1.030	1.007 - 1.033	1.005 - 1.033
Pre-heat day dehydration status
- Euhydrated (< 1.020)	3 (50.0%)	8 (66.7%)	11 (61.1%)
- Dehydrated (1.020-1.030)	1 (16.7%)	2 (16.7%)	3 (16.7%)
- Severely dehydrated (> 1.030)	2 (33.3%)	2 (16.7%)	4 (22.2%)
Urine specific gravity post-heat day
- Mean (SD)	1.023 (0.010)	1.022 (0.009)	1.023 (0.009)
- Min − Max	1.008 - 1.036	1.004 - 1.034	1.004 - 1.036
Post-heat day dehydration status
- Euhydrated (< 1.020)	2 (33.3%)	4 (33.3%)	6 (33.3%)
- Dehydrated (1.020-1.030)	3 (50.0%)	5 (41.7%)	8 (44.4%)
- Severely dehydrated (> 1.030)	1 (16.7%)	3 (25.0%)	4 (22.2%)
Percent change in urine specific gravity pre- to post-heat day
- Mean (SD)	0.496 (0.998)	0.404 (0.724)	0.434 (0.797)
- Min − Max	−0.485 - 2.069	−0.883 - 1.390	−0.883 - 2.069

^*Data are missing from 6 students who provided baseline data