an Garside and Dominic Doran published an interesting study in June of 2000 in the Journal of Sports Sciences. The study is known as “The Garside Study".
The Garside study tested athletes in a biomechanical setting, in other words, aerodynamics on the bike were not a factor in the results: Aerodynamic benefits would be in addition to the biomechanical benefits from a triathlon bike.
Test subjects performed a 40 kilometer (24.8 mile) time trial on a road geometry bike in a stationary trainer followed immediately by a 10 kilometer (6.2 mile) run on a treadmill. Later the same test subjects repeated the test protocol but used a triathlon geometry bike on the stationary trainer then transitioned immediately to the treadmill for the 10 kilometer run.
Time savings for athletes running off the triathlon bike were enormous: They averaged a full 5 minutes time savings on the 10 kilometer run when they transitioned off a tri bike as opposed to transitioning off a road bike.
Simply put, you’ll run faster and more comfortably off a triathlon bike than a road bike.
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