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Gerkin
The Gerkin protocol, also known as the reman's protocol, is a
sub-max Vo2 (volume of oxygen) test. The test will increase speed
and elevation alternately until you reach 85% of your Max heart
rate. The time it takes for you to reach 85% determines the test
score (VO2max) as shown in the chart below.
Stage
1
2.1
2.2
2.3
2.4
3.1
3.2
3.3
3.4
4.1
4.2
4.3
4.4
5.1
5.2
5.3
5.4
6.1
6.2
6.3
6.4
7.1
7.2
7.3
7.4
8.1
8.2
8.3
8.4
9.1
9.2
9.3
9.4
10.1
10.2
10.3
10.4
11.1
11.2
11.3
11.4
Time
Speed
0 to 1:00
4.5mph
1:00~1:15
4.5mph
1:15~1:30
4.5mph
1:30~1:45
4.5mph
1:45~2:00
4.5mph
2:00~2:15
5.0mph
2:15~2:30
5.0mph
2:30~2:45
5.0mph
2:45~3:00
5.0mph
3:00~3:15
5.0mph
3:15~3:30
5.0mph
3:30~3:45
5.0mph
3:45~4:00
5.0mph
4:00~4:15
5.5mph
4:15~4:30
5.5mph
4:30~4:45
5.5mph
4:45~5:00
5.5mph
5:00~5:15
5.5mph
5:15~5:30
5.5mph
5:30~5:45
5.5mph
5:45~6:00
5.5mph
6:00~6:15
6.0mph
6:15~6:30
6.0mph
6:30~6:45
6.0mph
6:45~7:00
6.0mph
7:00~7:15
6.0 mph
7:15~7:30
6.0mph
7:30~7:45
6.0mph
7:45~8:00
6.0mph
8:00~8:15
6.5mph
8:15~8:30
6.5mph
8:30~8:45
6.5mph
8:45~9:00
6.5mph
9:00~9:15
6.5mph
9:15~9:30
6.5mph
9:30~9:45
6.5mph
9:45~10:00
6.5mph
10:00~10:15
7.0mph
10:15~10:30
7.0mph
10:30~10:45
7.0mph
10:45~11:00
7.0mph
28
Grade
VO2 Max
0%
31.15
2%
32.55
2%
33.6
2%
34.65
2%
35.35
2%
37.45
2%
39.55
2%
41.3
2%
43.4
4%
44.1
4%
45.15
4%
46.2
4%
46.5
4%
48.6
4%
50
4%
51.4
4%
52.8
6%
53.9
6%
54.9
6%
56
6%
57
6%
57.7
6%
58.8
6%
60.2
6%
61.2
8%
62.3
8%
63.3
8%
64
8%
65
8%
66.5
8%
68.2
8%
69
8%
70.7
10%
72.1
10%
73.1
10%
73.8
10%
74.9
10%
76.3
10%
77.7
10%
79.1
10%
80
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