. 2018 Oct 16;9:1279. doi: 10.3389/fphys.2018.01279

Table 3.

Circulatory, metabolic, and hormonal variables at the different time-points (T₀–T₇) while sitting (SIT) or when sitting was interrupted by the 6-min HIIT (SIT+HIIT).

	Time-points

Variable	Condition	T0	T1	T2	T3	T4	T5	T6	T7	Best d
Blood glucose [mg⋅dl^-1]	SIT	92.3 ± 7.1	112.3 ± 18.5^a	98.9 ± 10.0	95.6 ± 11.9	100.9 ± 16.2	95.3 ± 11.6	96.6 ± 12.9	95.8 ± 10.1	0.3
	SIT+HIIT	94.2 ± 7.2	116.6 ± 17.1 ^a	102.7 ± 15.1	93.2 ± 10.5	97.3 ± 14.3	99.3 ± 13.5	97.8 ± 15.1	92.4 ± 12.4
Blood lactate concentration [mmol⋅l^-1]	SIT	1.0 ± 0.2	1.2 ± 0.2	1.2 ± 0.2	1.2 ± 0.1	1.2 ± 0.1	1.2 ± 0.2	1.2 ± 0.2	1.2 ± 0.2	2.5
	SIT+HIIT	1.0 ± 0.2	1.1 ± 0.2	1.5 ± 0.4	7.6 ± 3.7^ab	3.9 ± 3.1^ab	2.0 ± 1.2	1.4 ± 0.4	1.2 ± 0.2
Salivary cortisol [ng⋅mL^-1]	SIT	11.0 ± 3.9	-	7.5 ± 3.1^a	6.2 ± 1.8^a	7.0 ± 3.8^a	6.3 ± 2.4^a	5.2 ± 1.5^a	5.4 ± 1.5^a	0.42
	SIT+HIIT	11.3 ± 2.0	-	7.6 ± 2.3^a	6.8 ± 1.8^a	8.2 ± 1.5	6.0 ± 1.2^a	4.9 ± 1.2^a	5.2 ± 1.1^a
Heart rate [bpm]	SIT	64.8 ± 9.4	72.2 ± 9.6	74.2 ± 9.8^a	74.6 ± 8.1^a	70.8 ± 7.9	69.6 ± 10.4	68.2 ± 10.1	69.0 ± 10.3	9.35
	SIT+HIIT	67.3 ± 8.0	71.3 ± 7.1	75.8 ± 7.7	166.0 ± 11.2^ab	87.6 ± 10.6^ab	82.4 ± 11.9^ab	77.3 ± 7.4^ab	76.5 ± 8.7^a
Oxygen uptake [ml⋅min^-1]	SIT	0.240 ± 0.043	0.283 ± 0.051	0.287 ± 0.430	0.278 ± 0.042	0.269 ± 0.0067	0.247 ± 0.045	0.257 ± 0.062	0.260 ± 0.051	5.28
	SIT+HIIT	0.252 ± 0.038	0.313 ± 0.050	0.305 ± 0.057	2.673 ± 0.640^ab	0.320 ± 0.060	0.318 ± 0.083	0.291 ± 0.056	0.306 ± 0.033
Respiratory exchange ratio [a.u]	SIT	0.84 ± 0.05	0.84 ± 0.04	0.85 ± 0.05	0.84 ± 0.05	0.84 ± 0.05	0.85 ± 0.05	0.84 ± 0.05	0.83 ± 0.05	6.32
	SIT+HIIT	0.85 ± 0.05	0.84 ± 0.06	0.85 ± 0.06	1.30 ± 0.09^ab	0.81 ± 0.06	0.81 ± 0.06	0.82 ± 0.06	0.80 ± 0.005

^aP < 0.05 for the difference to T₀ within group. ^bP < 0.05 for the difference between groups.