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Showing posts from January, 2014

Kinesiological Approach to Bike Fit: Saddle Tilt

Saddle position is the core of any bike fit.  When the saddle is positioned incorrectly, it can cause a wide range of overuse injuries throughout the entire body.  Pain or numbness can occur at the hands, wrists, elbows, shoulders, neck, back (commonly low back), knees and feet.  This is no exaggeration!  Whenever I perform bike fittings, it's not uncommon for me to fix almost all of the rider's problems solely from correcting saddle position.  This post will discuss saddle tilt.

THE PEVLIS & THE LUMBAR SPINE "LOW BACK"
Since the lumbar spine attaches directly to the pelvis, its fate is determined by the tilt of the pelvis.  When you tilt your pelvis forward, the lower back extends.  When you tilt your pelvis backwards, the lower back will flex.  The right amount of saddle tilt is one that lets the pelvis maintain neutral- the healthy balance of flexion and extension.
It took some digging around the internet to find the pictures below, but I found three pictures o…

Rollers and Trainers - Good for Fitness, Hazardous to our Health?

While I was setting up my roller for another training ride, I noticed that my tire looked like this. At first, I thought this was some sort of tire indicator telling me that the tire needed to be replaced, but after rubbing it with my finger, I noticed that some of the metallic material transferred to my finger.  Apparently, the aluminum from my Travel Trac roller transferred to my tire.  Keep in mind that this was from a single one hour ride.  Check out my ride at Strava. http://app.strava.com/activities/112243986
Prior to this ride, the entire tire was just as red as everything else.  While aluminum is used in many applications (beverages, deodorant, cooking and food storage), I question whether this much aluminum would be considered safe.  There has to be some sort of health consequence.  
How Can Aluminum Affect Your Health? I did a quick Google search and came across health information related to aluminum from the Agency for Toxic Substances & Disease Registry.  Research so fa…