Many people come to cycling because of inuries that stopped them from running and participating in impact sports like they used to. Their bodies change in form as they spend 100s of hours in a “closed bent over” position that, by nature shortens their iliopsoas working length and transforms their spine into a rounded shape.
These changes creates an enormous breathing load and impact on the body.
Add to this the need to “pull up” the pedals with conventional round chainrings and you have a sport that leaves an athlete empty at the end of their ride due to compensation and pedaling inefficiency.
Working with Jean-Louis Talo of the Osymetric chainring company, in 2017 we have defined the difference between the breathing patterns of a cyclist using conventional round chainrings and the unique twin-cammed Osymetric chainrings.
Using my dynamic bikefit machine, the BioBike 5000 our project has taken us from Tour de France winners Chris Froome and Bradley Wiggins (both Osymetric users) pedaling and breathing style to data related to atheletes hip surgeries and the long-term effects on the diaphragm and breathing.
The unique twin-cammed shape of the Osymetric chainrings carries huge and immediate benefits to cyclists who are a) Taller than average (over 6ft or 180cms), and b) Cyclists carrying back and hip injuries due to removal of spinal tension at the iliopsoas insertion point.
No longer does a cyclist need to “pull up” and strain their iliopsoas and spine – they can “push through”, engaging ONLY the larger muscles of the thigh and gluteal muscles. A revelation and a revolution!