Dr. Andrew Pruitt, the pioneer of modern bike fitting, breaks down how proper positioning isn't about copying the pros—it's about marrying the bike to your body. Learn why comfort and speed go hand in hand, how often you actually need a professional fit, and what the future of automated bike fitting might look like.
Key Takeaways
- Bike fit is an ongoing process, not one-and-done: get a professional assessment once yearly, especially as your body changes with age and flexibility decreases
- A thorough pre-fit physical exam (flexibility, foot mechanics, hip motion, spinal alignment) is what separates great fitters from average ones who only read screen numbers
- Hand numbness in cycling typically comes from too much weight on the bars combined with poor core strength—raise your bars, strengthen your core, and upgrade bar material and padding
- Comfort and speed are inseparable: an aerodynamic position you can't hold is worthless; test positions in the lab, physiology lab, track, then road before finalizing
- Automated bike fit apps are coming but currently miss the front-view (Z-plane) data needed to assess knee alignment, hip rock, and foot dynamics—human interpretation remains crucial
- Elite riders look beautiful on bikes because of genetic gifts and self-selection, not because that's the formula for others; make the bike fit the rider, not the rider fit the bike
Expert Quotes
"Comfort equals speed. You put somebody in an aerodynamic position but they can't hold it—well that doesn't work."
"Bike fit is not a one and done; it is an ongoing process. Once a year to have somebody look at you who has known you through this process is a superb idea."
"You have to marry the machine to the rider and not aspire to what felt good to the elite guy."