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  1. GeirEvensen 06:38, 6. juni 2015
  2. tlangvold 06:46, 12. juni 2013
  3. kentrune 07:39, 28. mai 2013


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Tur Tid Puls Fart Stigning Effekt Power (est) Gj. effekt/kg VAM

Velocity Ascended, Metres per hour Vm/h usually referred to as VAM, coined by Dr Michele Ferrari is the speed of elevation gain per hour in Metre per hour. This is a term used in cycling to rate how fast an individual gains elevation while climbing an incline. Ferrari also stated that every one percent increase in average gradient increases VAM by 50. For example, a 1650 VAM on a climb of 8 percent average grade is a performance equivalent to a VAM of 1700 on 9 percent average grade. Ambient conditions (e.g. friction, air resistance) have less effect on steeper slopes (absorb less power) since speeds are lower than on gentler slopes
The acronym VAM is not truly expanded in English, where many think the V stands in some way for vertical, and the M represents meters, for instance "Vertical Ascent Meters/Hour." Ferrari says,
I called this parameter Average Ascent Speed (‘VAM’ in its Italian abbreviation from Velocità Ascensionale Media).
A direct translation of "velocità ascensionale media" is "mean (average) ascent velocity" leading to an expansion of the acronym in English as Velocity, Ascent, Mean.
VAM is calculated the following way: VAM = (metres ascended x 60) / Minutes it took to ascend
A standard unit term with the same meaning is Vm/h, vertical meters per hour; the two are used interchangeably.
The relationship between VAM and relative power output is expressed as follows: [3]
Relative power (Watts/kg) = VAM (meters/hour) / (Gradient factor x 100)
This gradient factor ranges between 2.6 for a gradient of 6% and 3.1 for a gradient of 11%
To work out the gradient factor take 2 + (% grade/10)

Examples:

1800+ Vm/h: Lance Armstrong - and Marco Pantani of olden days
1650-1800 Vm/h: Top 10 / Tour de France GC or mountain stage winner.
1450-1650 Vm/h: Top 20 / Tour de France GC; top 20 on tough mountain stage.
1300-1450 Vm/h: Finishing Tour de France mountain stages in peloton
1100-1300 Vm/h: The Autobus Crew

Kommentar
GeirEvensen juni 6, 2015 06:38 86,9% 13,4 km/t 133 m 362 W 346,9 W 4,2 1203
tlangvold juni 12, 2013 06:46 89,2% 13,3 km/t 129 m 336,0 W 3,9 1144
kentrune mai 28, 2013 07:39 87,5% 11,7 km/t 129 m 318,1 W 3,4 1012
kentrune mai 20, 2017 08:14 84,5% 11,0 km/t 133 m 295,6 W 3,1 969
kentrune mai 1, 2012 09:08 86,5% 9,7 km/t 141 m 292,6 W 3,0 926
kriberg mai 28, 2013 09:18 88,8% 9,6 km/t 126 m 263,0 W 2,7 813
tlangvold mai 28, 2013 09:23 83,0% 10,2 km/t 129 m 246,0 W 2,9 825
kriberg juli 2, 2015 09:23 88,8% 9,5 km/t 0 m 20,7 W 0,2
kriberg juni 12, 2013 09:42 86,8% 9,2 km/t 136 m 270,0 W 2,7 841
kentrune mai 29, 2016 09:59 79,5% 9,0 km/t 131 m 238,8 W 2,5 787
kriberg sep. 10, 2012 10:23 89,8% 8,6 km/t 131 m 243,5 W 2,5 757
nlight mai 28, 2013 11:12 87,4% 8,0 km/t 132 m 209,4 W 2,3 707
nlight juni 1, 2013 11:46 86,5% 7,6 km/t 140 m 209,1 W 2,3 714
nlight mai 29, 2016 12:56 87,4% 6,9 km/t 103 m 143,1 W 1,6 478
nlight mai 1, 2012 13:42 89,3% 6,5 km/t 136 m 176,2 W 2,0 596
nlight april 29, 2012 14:25 88,8% 6,2 km/t 138 m 167,3 W 1,9 574