HSS Bike Fitting Service

Bike fitting is the science and art of adjusting the geometry of a bike to maximize both the power output and comfort of the cyclist. The HSS Bike Fitting Service is the first hospital-based, in-house bike fitting program of its kind. We use the Apex Fit Bike from the UK – it’s one of the most advanced fit bikes available worldwide. It is a great tool for our experienced clinicians to determine what questions to ask, resulting in a better position and more precise fit.

Benefits of the Bike Fitting Program

  • Become more comfortable and efficient on your existing bike
  • Prepare to perform at your best in competition
  • Prepare for a long recreational bike trip
  • Learn about proper form, posture, and breathing on the bike to minimize injury risk
  • Improve balance and stability in addition to bike handling
  • Eliminate the guess work in ordering a custom bike by giving the builder all the specifications to build your frame
  • Improve your speed by measuring changes in your physiology including heart rate, cadence, power output, and oxygen usage (optional)

Our Expert Team

Our program is led by Happy Freedman, internationally recognized bike fitting specialist and cycling coach with over 30 years of experience. With the resources at HSS, we go well beyond the scope of a traditional bike fit to accommodate your individual purpose and needs.

Your Performance Screen will be conducted by one of our Performance Specialists.

The Apex Fit Bike

The Apex Fit Bike was developed in the UK. It’s one of the most advanced fit bikes worldwide. In addition to recording all of the cyclist’s positions during a fitting, we can measure energy output of each leg independently.

We can also use the Apex for physiology testing. This fit bike allows us to write our own software and to integrate bike fitting with medical technologies including surface EMG, force plates, 3D modeling, and more.

*Note: Not all tools and technology are necessary for all bike fits. The equipment required will be determined based on individual needs. Tools will be selected for specific applications to make the bike fit as optimal as possible.

Testing Services

Basic Bike Fitting

  • 30 Minute Bike Fitting Performance Screen
  • 90 Minute Bike Fitting Analysis & Report

Advanced Bike Fitting

  • For bikers training for longer competitions (>3 hours), spend additional time on the bike to determine any limiting factors to how your body adapts over time and make adjustments to maximize your performance across the entire event.
  • Individualized adjustments can be made for bikers with joint replacements, disabilities or other special needs.

Add-On Options:

  • Metabolic testing with our Registered Clinical Exercise Physiologist
  • Biomechanical analysis in the Leon Root Motion Analysis Lab
  • Training or M.E.L.T. session to address identified strength or mobility deficits
  • Nutrition consult to promote improved performance, recovery, or body composition

The standard bike fit takes 2 hours including a comprehensive Performance Screen. However, some fits for longer rides or triathlons can take 6 to 8 hours for optimal results. A full work up for elite athletes can take up to two to three days (you get a break, of course!).

Forms to Fill Out Prior to Session

Below are the forms you will need to fill out prior to your bike fitting. For optimal service, please drop the forms off at the Sports Rehabilitation and Performance Center or email them to prior to your appointment.

Equipment to Bring with You

On the day of your bike fit, please bring your cycling shoes, bike shorts, gloves, and jersey or usual bike-riding clothing. If you use an aero helmet, then you can bring it as well, especially if you are looking for a triathlon or time trial fit.

Whenever possible we would like to see the bike you’re currently riding as well, particularly if you are planning on using that bike for your event. Even if we are doing a fit for a new bike, reviewing your current bike often reveals causes of current issues or complaints that can be remedied with the bike fitting process.

Where to Find Us

The Bike Fitting service is typically performed at:
HSS Sports Rehabilitation and Performance Center
525 East 71st Street, Ground Floor
New York, NY 10021

What is the History of Bike Fitting?

Bike fitting started in the 1970’s with the research and work done in cycling by bike builders like Ben Serotta in New York and researchers like Dr. Andy Pruitt in Colorado. In 1979, Ben Serotta paved the way for the development of modern bike fitting by inventing the size cycle, which allowed bike builders to replicate riding positions for a cyclist before actually building the bike. The size cycle allows the bike fitter to determine the geometry of the frame and a cyclist’s position on the bike before the purchase of a bicycle or creating a custom frame.

In the fall of 1985, Dr. Pruitt performed the first 3D motion capture bike fit. Their goals were to improve the cyclist’s position and mechanics while cycling, leading to better performance and fewer injuries. HSS’s first 3D motion capture bike fit took place in November 2000.

Today’s modern fit bikes do everything the original ones did and more, as they are connected to a computer that allows for a range of additional measurements. They record the cyclist’s positions and can measure energy output in watts. Combined with other tools such as lasers, motion capture video, force plates and more, today’s bike fit helps draw a much improved portrait of a rider’s measurements, which can then be translated into an improved riding position, through adjustments on the bike and off, including orthotics.

If you have any additional questions, please contact us at: