Exercise volume and aerobic fitness in young adults: the Midwest Exercise Trial-2

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Table 3 Change in cardiovascular fitness over the 10 mo intervention by group and gender

	Month	400 kcal session⁻¹	600 kcal session⁻¹	Control
Total sample
VO₂ max (L min⁻¹)*	0	3.0 ± 0.7	3.1 ± 0.8	2.8 ± 0.6
	5	3.3 ± 0.8	3.4 ± 1.0	2.7 ± 0.6
	10	3.4 ± 0.8	3.5 ± 0.9	2.7 ± 0.5
VO₂ max (ml kg⁻¹ min⁻¹)*	0	33.4 ± 6.6	34.2 ± 5.7	32.3 ± 5.0
	5	37.8 ± 7.1	38.0 ± 9.2	31.0 ± 5.8
	10	39.3 ± 7.9	40.9 ± 7.2	31.4 ± 5.3
Men
VO₂ max (L min⁻¹)*	0	3.6 ± 0.5	3.7 ± 0.7	3.2 ± 0.4
	5	3.9 ± 0.5	4.1 ± 0.8	3.2 ± 0.4
	10	4.0 ± 0.5	4.2 ± 0.7	3.2 ± 0.4
VO₂ max (ml kg⁻¹ min⁻¹)*	0	37.1 ± 6.5	36.4 ± 6.4	34.2 ± 5.8
	5	41.4 ± 7.6	41.6 ± 7.3	33.6 ± 6.7
	10	42.9 ± 8.0	44.2 ± 7.6	33.0 ± 6.4
Women
VO₂ max (L min⁻¹)*	0	2.5 ± 0.4	2.5 ± 0.4	2.4 ± 0.2
	5	2.7 ± 0.4	2.7 ± 0.8	2.3 ± 0.3
	10	2.7 ± 0.5	2.8 ± 0.4	2.3 ± 0.3
VO₂ max (ml kg⁻¹ min⁻¹)*	0	29.6 ± 4.2	31.8 ± 3.7	30.2 ± 3.3
	5	34.3 ± 4.6	34.3 ± 9.7	28.5 ± 3.7
	10	37.7 ± 6.2	37.3 ± 4.7	29.8 ± 3.7

Values are mean ± standard deviation
* Change in both the 400 and 600 kcal session⁻¹ groups were significantly greater than control (p < 0.05). The differences for change between the 400 and 600 kcal session⁻¹ groups were not statistically significant