Table 3.
Absolute energy system contributions in each stage of the incremental exercise test. Data are means (±SD, n =10).
Speed
(km·h
1
)
6.0
7.2
8.4
9.6
10.8
12.0
13.2
14.4
15.6
16.8
18.0
Aerobic
(kJ)
47.2
*
(7.6)
63.0
*
(7.7)
94.4
*
(13.0)
110.2
*
(15.0)
123.7
*
(17.3)
134.0
*
(16.4)
147.2
*
(17.1)
160.2
*
(15.5)
168.8
*
(18.4)
177.0
*
(22.1)
183.9
*
(23.5)
Glycolytic
(kJ)
2.1
(1.0)
2.0
(.9)
2.2
(1.1)
4.3
(1.0)
4.4
(1.6)
6.0
(1.2)
8.1
(2.0)
12
(2.3)
17.9
(2.5)
20.3
(3.1)
30.6
(3.0)
W
TOTAL
(kJ)
49.3
(7.4)
65.1
(7.7)
96.6
(12.3)
114.4
(15.0)
128.1
(17.6)
140.0
(17.4)
155.3
(18.7)
172.1
(19.7)
186.7
(25.0)
197.3
(31.1)
214.6
(25.8)
W: total metabolic demand.
* Different from glycolytic contribution (p < 0.05).