Effects of different training intensities in high-intensity interval training (HIIT) on maximal aerobic velocity, hematological and muscle-damage markers in healthy young adults

Table 2 Exercise characteristics of the two intervention groups

Week	Week 1	Week 2	Week 3	Week 4	Week 5	Week 6	Week 7	Week 8
EG₁₀₀
Set × (repetition)	2 × (8 × 30sIE)	2 × (9 × 30sIE)	2 × (10 × 30sIE)	2 × (11 × 30sIE)	2 × (10 × 30sIE)	2 × (12 × 30sIE)	2 × (12 × 30sIE)	2 × (11 × 30sIE)
Intensity	100% MAV/50%	100% MAV/50%	100% MAV/50%	100% MAV/50%	100% MAV/50%	100% MAV/50%	100% MAV/50%	100% MAV/50%
TL	1200 ATU	1350 ATU	1500 ATU	1650 ATU	1500 ATU	1800 ATU	1800 ATU	1650 ATU
EG₁₁₀
Set × (repetition)	2 × (8 × 30sIE)	2 × (9 × 30sIE)	2 × (10 × 30sIE)	2 × (11 × 30sIE)	2 × (10 × 30sIE)	2 × (12 × 30sIE)	2 × (12 × 30sIE)	2 × (11 × 30sIE)
Intensity	110% MAV/50%	110% MAV/50%	110% MAV/50%	110% MAV/50%	110% MAV/50%	110% MAV/50%	110% MAV/50%	110% MAV/50%
TL	1280 ATU	1440 ATU	1600 ATU	1760 ATU	1600 ATU	1920 ATU	1920 ATU	1760 ATU

MAV, Maximal aerobic velocity; EG₁₀₀, 100% MAV training group (n = 10); EG₁₁₀, 110% MAV training group (n = 10); TL, Training load; ATU, Arbitrary training units; Example: [2 × (8 × 30 s / 30 s) 100/50% MAV]; It means that the participant had to run two series with eight repetitions each 30 s composed of 30 s running at 100% of MAV and 30 s active recovery at 50% of MAV. The participant recovers passively 5 min between each series. Each session was repeated 3 times per week

ISSN: 2052-1847