Table 1. Changes in cardiorespiratory fitness in response to HIITRS, HIIITTS, and CON.
HIITRS
HIITTS
CON
Pre
Post
Pre
Post
Pre
Post
V·O2max
(ml·kg-1·min-1)
48.8 ± 2.5
†
51.9 ± 2.8
46.4 ± 3.0
†
48.5 ± 3.2
46.6 ± 2.9
47.1 ± 3.2
P-value
0.0004
0.04
0.2
%?
6.4
‡’§
4.6
1.0
V·O2/HR
(ml·b-1·min-1)
19.9 ± 2.9
†
21.4 ± 3.0
18.3 ± 1.6
†
18.9 ± 1.7
19.7 ± 2.4
19.8 ± 2.2
P-value
0.002
0.03
0.2
%?
7.5
‡’§
3.2
0.6
VT1 (%V·O2max)
69.2 ± 3.0
†
76.2 ± 2.9
71.2 ± 3.9
†
75.4 ± 3.9
70.1 ± 3.2
71.0 ± 2.6
P-value
0.0001
0.02
0.1
%?
10.1
§
5.9
1.2
VT2
(%V·O2max)
86.1 ± 5.2
†
90.8 ± 4.8
81.2 ± 3.6
†
84.1 ± 3.8
82.2 ± 2.7
83.0 ± 3.0
P-value
0.0002
0.001
0.2
%?
5.4
‡’§
3.6
0.9
Q·max
(l·min-1)
23.1 ± 1.8
†
24.6 ± 2.0
21.5 ± 1.5
†
22.5 ± 1.7
22.6 ± 1.9
22.6 ± 1.7
P-value
0.0003
0.03
0.8
%?
6.5
‡’§
4.6
0.0
SV (ml·beat-1)
131 ± 10.0
†
140 ± 10.1
128 ± 7.7
†
133 ± 9.2
132.9 ± 12.2
135.4 ± 11.8
P-value
0.0001
0.02
0.4
%?
6.8
§
3.9
1.8
Values are means ± SD. V̇O2max, maximum oxygen uptake; V̇O2/HR, O2 pulse; VT1, first ventilatory threshold; VT2, second ventilatory threshold; Q̇max, maximal cardiac output; SV, stroke volume. N = 10 for each group.
† Significantly greater than pre-training value (P < 0.05).