Journal of Sports Science and Medicine

Table 2. HIIT results. Warm-up and cool-down excluded. Values are expressed as mean (± standard deviation).

		PRE	MID	POST
Peak V̇O₂ (% V̇O₂max)	VLCHF	97.8 (3.9)	96.3 (5.2)	98.2 (5.0)
Peak V̇O₂ (% V̇O₂max)	HD	94.6 (4.4)	90.2 (5.3)	96.0 (7.3)
Mean V̇O₂ (% V̇O₂max)	VLCHF	77.0 (17.6)	75.7 (16.8)	76.9 (17.7)
Mean V̇O₂ (% V̇O₂max)	HD	72.4 (17.5)	68.9 (17.0)	73.0 (18.7)
Mean HR (% HRmax)	VLCHF	86.8 (7.3)	86.1 (7.3)	84.1 (7.6)
Mean HR (% HRmax)	HD	87.4 (7.0)	84.3 (7.2)	84.3 (7.8)
Mean RER	VLCHF	0.96 (0.06)	0.84 (0.04)	0.86 (0.04)
Mean RER	HD	0.93 (0.06)	0.89 (0.05)	0.92 (0.05)
Mean Lactate (mmol/L)	VLCHF	5.9 (1.4)	6.6 (1.6)	5.9 (1.1)
Mean Lactate (mmol/L)	HD	5.3 (1.2)	4.5 (.6)	5.2 (.9)
Mean RPE	VLCHF	13.8 (1.7)	13.4 (1.8)	12.2 (1.4)
Mean RPE	HD	14.5 (1.3)	13.8 (1.4)	13.7 (1.8)

PRE – before the experiment, MID – after 2 weeks of the experiment, POST – after the experiment, VLCHF/HD – very low-carbohydrate high-fat diet/habitual diet group, V̇O₂ – oxygen consumption, HR – heart rate, RER – respiratory exchange ratio, RPE – rate of perceived exertion.