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 3 Mean (± SD) values for muscle-damage markers measured during 30 s intermittent exercise before and after HIIT

Variables	Group	Pre	Post	p (eta-squared [η_p²])
Variables	Group	Pre	Post	Main effect of group	Main effect of time	Group × time interaction
ALAT (UI/L)	EG₁₀₀	20.4 ± 3.4	18.6 ± 3.4 a	0.379 (0.08)	< 0.001 (0.44)	< 0.001 (0.57)
	EG₁₁₀	20.0 ± 3.4	17.0 ± 3.5 ac
	CG	20.4 ± 3.6	20.7 ± 3.5
ASAT (UI/L)	EG₁₀₀	21.1 ± 4.4	19.2 ± 3.5 a	0.851 (0.02)	< 0.001 (0.56)	0.006 (0.29)
	EG₁₁₀	20.3 ± 4.8	17.4 ± 3.7 ac
	CG	20.2 ± 3.7	19.6 ± 2.9
CRP (mg/L)	EG₁₀₀	4.0 ± 0.8	3.5 ± 0.5 a	0.395 (0.08)	< 0.001 (0.41)	0.019 (0.17)
	EG₁₁₀	3.5 ± 1.1	3.2 ± 0.8 a
	CG	3.8 ± 0.7	3.7 ± 0.7
CK (Ul/L)	EG₁₀₀	201.9 ± 65.7	179.5 ± 58.6	0.831 (0.02)	< 0.001 (0.48)	0.008 (0.28)
	EG₁₁₀	197.0 ± 43.7	166.0 ± 40.8 a
	CG	205.3 ± 68.7	192.9 ± 51.8
LDH (Ul/L)	EG₁₀₀	199.7 ± 26.0	173.5 ± 28.3 a	0.843 (0.07)	0.004 (0.29)	0.012 (0.37)
	EG₁₁₀	208.8 ± 67.8	167.0 ± 47.8 ac
	CG	194.8 ± 24.5	192.8 ± 18.6

EG₁₀₀, trained group with 100% MAV (n = 10); EG₁₁₀, trained group with 110% MAV (n = 10); CG, control groups without HIIT (n = 9); HIIT, High intensity interval training program; pre-test, before HIIT; post-test, after HIIT; ALAT, alanine aminotransferase; ASAT, aspartate aminotransferase; CK, creatine kinase; CRP, C-reactive protein, LDH, lactate dehydrogenase
a: significant difference between before and after HIIT
c: significant difference between EG₁₀₀ and EG₁₁₀

ISSN: 2052-1847