On Wed, 01 Oct 2014 08:15:26 +0100, Mrcheerful wrote:

On 01/10/2014 00:36, TMS320 wrote:
"Mrcheerful" wrote
On 30/09/2014 21:20, Bret Cahill wrote:

Stay in lower gears and cycling actually makes knees better.

This corresponds with my experience.

Then why do so many cyclists develop patellofemoral syndrome?

How many is "so many"? Perhaps it actually developed before they became
a "cyclist".


Today, there is an estimated 80 million cyclists in the United States.
Studies estimate that of these 80 million, 48 percent experience
problems with their necks, 42 percent knees, 36 percent groin and
buttocks, 31 percent hands, and 30 percent back. Regardless of what you
intend to use a bicycle for, there are some basic safety principles you
can implement to avoid common cycling injuries.

(AOSSM 2009)

Those statistics are meaningless without comparative statistics from a
"control" group.