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  1. atomt 22:53, 8. august 2011
  2. atomt 23:22, 23. august 2009
  3. geir 23:31, 16. juli 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
atomt aug. 8, 2011 22:53 83% 22,3 km/t 189 m 239,2 W 2,4 496
atomt aug. 23, 2009 23:22 83,5% 21,9 km/t 232 m 266,5 W 2,7 596
geir juli 16, 2011 23:31 21,5 km/t 308 m 271,5 W 3,5 786
atomt sep. 30, 2011 23:56 77% 21,3 km/t 221 m 248,7 W 2,5 554
atomt juni 26, 2011 25:17 81,5% 20,1 km/t 232 m 251,2 W 2,4 551
atomt juni 28, 2011 25:31 83,5% 19,9 km/t 225 m 242,8 W 2,3 529
atomt sep. 11, 2009 25:56 76,5% 19,6 km/t 233 m 231,3 W 2,3 539
atomt juni 1, 2009 25:57 86,5% 19,9 km/t 223 m 227,3 W 2,3 516
atomt aug. 3, 2011 26:19 84,5% 19,4 km/t 225 m 221,4 W 2,3 513
atomt juni 3, 2010 26:46 82,5% 19,0 km/t 219 m 198,0 W 2,2 491
atomt juli 8, 2011 26:51 78,5% 19,1 km/t 223 m 217,5 W 2,2 498
atomt juli 6, 2011 27:17 80,5% 19,0 km/t 228 m 222,7 W 2,2 501
atomt juli 3, 2011 27:51 85,5% 19,7 km/t 218 m 234,3 W 2,2 470
atomt sep. 3, 2010 27:55 84% 20,2 km/t 226 m 288 W 225,6 W 3,1 486
atomt mai 10, 2010 28:12 79% 18,5 km/t 235 m 199,9 W 2,2 500
atomt sep. 27, 2009 28:30 74% 18,9 km/t 238 m 224,2 W 2,2 501
atomt juli 11, 2009 29:04 79% 17,6 km/t 231 m 199,8 W 2,0 477
atomt juli 28, 2011 29:35 87% 17,3 km/t 227 m 193,2 W 2,0 460
atomt mai 23, 2012 30:18 72% 17,2 km/t 219 m 193,3 W 1,9 434