Table 3.

Cardiorespiratory fitness (CRF) PRE and POST Values in HIIT and CON groups.

Author (Year)	CRF HIIT(PRE) mL kg−1 min−1	CRF HIIT (POST) mL kg−1 min−1	CRF CON (PRE) mL kg−1 min−1	CRF CON (POST) mL kg−1 min−1	Improvement in CRF in HIIT Group (%)	Effect Size (g)	p Value
Baquet et al., (2001) [22]	37.7 ± 2.1	40.02 ± 2.7	38.34 ± 3.2	38.49±2.3	3.9	0.61	<0.001
Boddy et al., (2010) [34]	41.26 ± 4.67	42.59 ± 7.51	43.61 ± 9.01	45.71 ± 7.09	3.1	0.42	>0.05
Boer et al., (2014) [35]	31.5 ± 5.2	31.4 ± 4.8	28.7 ± 5.7	27.4 ± 4.6	0.3	0.84	<0.01
Buchan et al., (2011) [24]	47.1 ± 6.4	52.6 ± 6.76	49.9 ± 7.1	48.8 ± 7. 6	7.60	0.53	<0.001
Buchan et al., (2012) [25]	47.1 ± 6.4	52.6 ± 6.7	49.9 ± 7.1	48.8 ± 7.64.2	7.70	0.53	<0.001
Buchan et al., (2013) [23]	46.28 ± 6.9	53.1 ± 7.2	47.72 ± 7.2	43.67 ± 6.2	6	0.78	<0.001
Coute de Araujo et al., (2012) [36]	26.5 ± 3.9	30.1 ± 4.2	26.9 ± 3.6	31.1 ± 4.2	13.40	0.25	0.004
Impellizzeri (2006) [37]	57.7 ± 7.1	61.4 ± 4.6	55.6 ± 3.4	59.7 ± 4.1	7	0.48	> 0.05
Koubaa et al., (2013) [38]	38.7 ± 1.2	42.9 ± 1.7	37.5 ± 1.6	39.2 ± 3.2	9.80	1.43	<0.001
Martin et al., (2015) [27]	48.28 ± 6.84	51.81 ± 6.37	50.46 ± 5.96	46.77 ± 5.68	6.8	0.95	<0.05
Martin-Smith et al., (2018) [28]	47.13 ± 6.31	49.13 ± 6.22	46.10 ± 7.32	42.88 ± 7.14	4	0.93	<0.05
Murphy et al., (2015) [39]	29.1 ± 3.5	32.7 ± 4.0	26.8 ± 4.9	30.2 ± 2.6	11	0.95	> 0.05
Racil et al., (2013) [40]	29.8 ± 2.7	30.5 ± 2.9	30.5 ± 2.5	31.1 ± 2.7	2.2	0.2	<0.05
Racil et al., (2016) [41]	36.9 ± 1.8	39.7 ± 1.8	38.1 ± 1.5	38.6 ± 1.4	12.60	1.25	<0.05
Sandbakk (2013) [42]	67.5 ± 6.5	70.2 ± 6.8	69.3 ± 7.2	70.3 ± 7.3	3.8	0.01	> 0.05
Sperlich (2011) [43]	55.1 ± 4.9	58.9 ± 4.7	55.3 ± 4.3	56.43 ± 3.7	7	0.59	<0.001
Starkoff et al., (2015) [44]	20.0 ± 5.7	22.7 ± 6.5	19.5 ± 6.6	19.6 ± 7.6	11.9	0.4	<0.05
Tjonna et al., (2009) [45]	32.3 ± 5.8	35.3 ± 0.8	32.3 ± 4.8	32.3 ± 0.8	8.5	0.68	<0.001