Table 1. Changes in cardiorespiratory fitness in response to HIIT
RS, HIIIT
TS, 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. V̇O
2max, maximum oxygen uptake; V̇O
2/HR, O
2 pulse; VT
1, first ventilatory threshold; VT
2, second ventilatory threshold; Q̇
max, maximal cardiac output; SV, stroke volume. N = 10 for each group.† Significantly greater than pre-training value (P < 0.05).‡ Significantly greater than HIIT
TS group§ Significantly greater than CON group.
