Warning: Declaration of MyAuthPlugin::initUser(&$user) should be compatible with AuthPlugin::initUser(&$user, $autocreate = false) in /home/tig/www/aalf/www/wiki/extensions/DDNAuthPlugin.php on line 37

Warning: session_name(): Cannot change session name when session is active in /home/tig/www/aalf/www/wiki/includes/Setup.php on line 222

Warning: session_set_cookie_params(): Cannot change session cookie parameters when session is active in /home/tig/www/aalf/www/wiki/includes/GlobalFunctions.php on line 2446

Warning: session_cache_limiter(): Cannot change cache limiter when session is active in /home/tig/www/aalf/www/wiki/includes/GlobalFunctions.php on line 2451

Warning: Parameter 1 to MediaWiki_TIGAutoAuthenticate() expected to be a reference, value given in /home/tig/www/aalf/www/wiki/includes/Hooks.php on line 117

Warning: Cannot modify header information - headers already sent by (output started at /home/tig/www/aalf/www/wiki/extensions/DDNAuthPlugin.php:4) in /home/tig/www/aalf/www/wiki/includes/Feed.php on line 125

Warning: Cannot modify header information - headers already sent by (output started at /home/tig/www/aalf/www/wiki/extensions/DDNAuthPlugin.php:4) in /home/tig/www/aalf/www/wiki/includes/WebResponse.php on line 10

Warning: Cannot modify header information - headers already sent by (output started at /home/tig/www/aalf/www/wiki/extensions/DDNAuthPlugin.php:4) in /home/tig/www/aalf/www/wiki/includes/WebResponse.php on line 10

Warning: Cannot modify header information - headers already sent by (output started at /home/tig/www/aalf/www/wiki/extensions/DDNAuthPlugin.php:4) in /home/tig/www/aalf/www/wiki/includes/WebResponse.php on line 10

Warning: Cannot modify header information - headers already sent by (output started at /home/tig/www/aalf/www/wiki/extensions/DDNAuthPlugin.php:4) in /home/tig/www/aalf/www/wiki/includes/WebResponse.php on line 10

Warning: Cannot modify header information - headers already sent by (output started at /home/tig/www/aalf/www/wiki/extensions/DDNAuthPlugin.php:4) in /home/tig/www/aalf/www/wiki/includes/WebResponse.php on line 10
http://www.aalf.org/wiki/index.php?title=User:WylieWadsworth2275&action=history Revision history for this page on the wiki en MediaWiki 1.13.3 Sat, 07 Nov 2026 14:58:42 GMT http://www.aalf.org/wiki/index.php?title=User:WylieWadsworth2275&diff=23176&oldid=prev <p>New page: VAM is an acronym for the Italian phrase 'velocità ascensionale media,' which translates to English as 'average ascent speed.' The term was coined coined by [http://www.53x12.com Dr Miche...</p> <p><b>New page</b></p><div>VAM is an acronym for the Italian phrase 'velocità ascensionale media,' which translates to English as 'average ascent speed.' The term was coined coined by [http://www.53x12.com Dr Michele Ferrari] and is the speed of elevation gain, usually stated in units of meters per hour. VAM is a parameter used in cycling as a measure of fitness and speed; it is useful for relatively objective comparisons of performances and estimating a rider's power output per kilogram of body mass, which is one of the most important qualities of a cyclist who competes in stage races and other mountainous events. 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 <br /> 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 &quot;Vertical Ascent Meters/Hour.&quot; Ferrari says,<br /> I called this parameter Average Ascent Speed (‘VAM’ in its Italian abbreviation from Velocità Ascensionale Media).<br /> A direct translation of &quot;velocità ascensionale media&quot; is &quot;mean (average) ascent velocity&quot; leading to an expansion of the acronym in English as Velocity, Ascent, Mean.<br /> VAM is calculated the following way: VAM = (metres ascended x 60) / Minutes it took to ascend<br /> A standard unit term with the same meaning is Vm/h, vertical meters per hour; the two are used interchangeably.<br /> The relationship between VAM and relative power output is expressed as follows: <br /> Relative power (Watts/kg) = VAM (meters/hour) / (Gradient factor x 100)<br /> This gradient factor ranges between 2.6 for a gradient of 6% and 3.1 for a gradient of 11%<br /> To work out the gradient factor take 2 + (% grade/10)<br /> <br /> Examples:<br /> <br /> 1800+ Vm/h: Lance Armstrong - and Marco Pantani of olden days<br /> 1650-1800 Vm/h: Top 10 / Tour de France GC or mountain stage winner.<br /> 1450-1650 Vm/h: Top 20 / Tour de France GC; top 20 on tough mountain stage.<br /> 1300-1450 Vm/h: Finishing Tour de France mountain stages in peloton<br /> 1100-1300 Vm/h: The Autobus Crew<br /> Other examples of its usage can be found at [http://www.cyclingnews.com/ CyclingNews.com].<br /> An online VAM calculator is available at [http://www.cyclingfitness.net/online-vam-calculator/ VAM Calculator], also Cycling Power Models which has a VAM and Relative Power Calculator including comparison of the latter with an alternative, validated power model. <br /> <br /> Abridged from an article at [http://en.wikipedia.org/wiki/Velocity_Ascended,_Metres_per_hour Wikipedia]</div> Wed, 14 Mar 2012 15:45:47 GMT WylieWadsworth2275 http://www.aalf.org/wiki/index.php?title=User_talk:WylieWadsworth2275