Saddle fore and aft position has a dramatic influence on a rider’s muscle recruitment, weight distribution, hip closure and saddle comfort.
Finding an appropriate setback is also largely dependant on pedalling style and intended application.
Long distance Triathletes prioritise open hips and the need to run off the bike. They can easily take the extra weight on the front end with the use of armrests and maximize the aero benefits.
Meanwhile, a Road Rider must consider a more balanced weight distribution, as it will be their hands and arms which will take on the extra load otherwise.
Other applications such as Track Racers, will often fall somewhere between these two.
It’s all about balance.
AC Performance Bike Fit 