Jim Parker

As a radiologist, I know human anatomy from head-to-toe. A standard bike places too much pressure on several sensitive areas of the body. This becomes more of a problem as we age. I did an exhaustive search of alternate bicycle designs before concluding that the Cruzbike is the best combination of comfort, performance, safety, and ergonomic design.

It also looks cool, goes very fast, and is simply fun to ride. In the photos, note that the hands and wrists are not bearing weight, the back is supported, the head is in a comfortably high and upright position for viewing traffic (without craning the neck), the rider's weight is not centered over the genitals (which can cause pain, numbness, and loss of function), and the laid-back posture creates nearly the same aerodynamic profile as a racer on a standard bicycle in a tuck position.

The standard bicycle position puts the rider at an increased risk of injury in several ways. In contrast, the recumbent Cruzbike design eliminates or reduces these risks. The Cruzbike appeals to bicyclists who want to avoid injury... and those already injured and unable to ride a regular bike without pain.
We've had favorable reports from people with various musculoskeletal problems including old fractures, disk herniations, lower back pain, and arthritis of the shoulder, knee, ankle, wrist, and neck; and from people recovering from surgery such as ACL reconstruction or spinal fusion.

Read my Saddle Injuries page where I answer some questions about the health aspects of bicycle riding and discuss what the latest research is telling us.

Jim Parker, M.D., co-founder of Cruzbike

Jim Parker's recent posts

A Model for Predicting Performance in Race Across America
Submitted by Jim Parker on Thu, 11/06/2015 - 13:59
RAAM 2015 is coming up and I have to admit I am excited. This is a very fun event to follow from a comfortable distance, especially if you like cycling and playing with numbers. The advent of GPS-satellites, power meters, and software that tracks the speed, position, and elevation of a cyclist ha
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Florida HPRA Results
Submitted by Jim Parker on Thu, 12/02/2015 - 22:15
Fresh off the race courses in Ft. Lauderdale last weekend, we now are in the final prep for Bike Sebring, another Florida bicycle racing classic. Before the starting gun fires on Saturday morning, I wanted to report on the HPRA races, which were quite noteworthy for Cruzbike. The first day of the
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Tilting Trike Prototype Testing
Submitted by Jim Parker on Mon, 02/02/2015 - 5:45
One of the exciting projects on the Cruzbike horizon is a tilting trike (code name TTRIKE). For many years, this has been a dream of mine. The ultimate version of that dream was a trike that would use the same drivetrain and frame as our popular bicycles, thus allowing Cruzbike owners to easily sw
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