Table 2.

Metabolic and thermogenic/metabolic circulating factors prior to and 23 h following a single bout of sprint interval training (SIT).

	B1	B2	B3	Post-SIT
RMR (kJ/day)	7147 ± 222	7149 ± 246	6987 ± 245	7195 ± 285
RER	0.86 ± 0.01	0.86 ± 0.01	0.85 ± 0.01	0.85 ± 0.01
Glucose (mmol/L)	5.00 ± 0.11	5.04 ± 0.13	5.04 ± 0.10	4.98 ± 0.12
Insulin (pmol/L)	24.4 ± 4.5	25.4 ± 3.7	22.9 ± 3.5	23.9 ± 3.2
NEFA (mmol/L)	0.31 ± 0.04	0.34 ± 0.04	0.36 ± 0.04	0.34 ± 0.04
Leptin (ng/mL)	7.27 ± 0.82	7.28 ± 0.90	7.31 ± 1.08	7.85 ± 1.10
Free T3 (pmol/L)	3.00 ± 0.14	3.05 ± 0.13	3.02 ± 0.17	2.96 ± 0.13
Total T3 (nmol/L)	1.05 ± 0.09	1.08 ± 0.09	1.01 ± 0.09	0.98 ± 0.10

Data are mean ± SE. All variables were determined on four separate occasions. Measurements were performed over two pairs of consecutive mornings; each pair was separated by 7 days. Immediately following either the first or third data collection (randomly assigned) research participants completed a single bout of SIT. B1, B2, and B3 refer to baseline values determined from measurements not preceded by SIT. RMR, resting metabolic rate (1 kcal = 4.1868 kJ); RER, respiratory exchange ratio; NEFA, nonesterified fatty acids; T3, triiodothyronine. All comparisons are P > 0.05.