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  1. jonandre.johansen 08:47, 16. september 2011
  2. jonandre.johansen 08:49, 19. juli 2011
  3. jonandre.johansen 08:54, 20. september 2011


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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
jonandre.johansen sep. 16, 2011 08:47 83,8% 15,2 km/t 120 m 233,6 W 3,0 820
jonandre.johansen juli 19, 2011 08:49 85,9% 16,1 km/t 140 m 296,4 W 3,4 953
jonandre.johansen sep. 20, 2011 08:54 85,9% 15,2 km/t 121 m 234,5 W 3,0 816
jonandre.johansen juli 19, 2011 09:10 83,8% 15,1 km/t 140 m 276,0 W 3,2 916
jonandre.johansen juli 19, 2011 09:13 78,5% 14,5 km/t 143 m 277,7 W 3,2 931
heikjern okt. 27, 2012 09:23 82,7% 14,4 km/t 122 m 174,9 W 3,0 780
heikjern juli 21, 2012 09:27 75,6% 14,2 km/t 121 m 170,8 W 2,9 768
heikjern okt. 27, 2012 09:29 81,2% 14,2 km/t 120 m 169,3 W 2,9 759
heikjern okt. 27, 2012 09:36 81,2% 14,0 km/t 120 m 166,9 W 2,9 750
heikjern aug. 9, 2012 10:44 68,0% 12,4 km/t 55 m 79,7 W 1,4 307
heikjern juli 19, 2012 10:59 69,5% 12,2 km/t 125 m 148,5 W 2,6 683
heikjern juli 20, 2012 11:18 71,1% 11,9 km/t 118 m 137,3 W 2,4 627
heikjern juli 29, 2012 11:38 67,0% 11,5 km/t 120 m 134,5 W 2,3 619
heikjern juni 26, 2012 12:00 68,0% 11,4 km/t 160 m 171,0 W 2,9 800
heikjern juni 22, 2012 12:23 64,0% 10,9 km/t 196 m 195,9 W 3,3 950
jonandre.johansen juni 22, 2012 12:27 58,6% 10,8 km/t 117 m 156,5 W 2,0 564
heikjern mars 5, 2012 16:21 68,5% 8,8 km/t 189 m 154,2 W 2,6 694