does bicycling cause big pelvises?

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khilikz

New member
i do tkd which requires a lot a flexibility like doing the splits
every summer i would go everywhere i need to go on my bike. and at the end of each summer my splits angle decreases by 20-30 degrees because my pelvis would grow over my hip joint limiting how far i go on the splits, but in the winter i get droven instead and my splits get much better
two 4th dans in my class are strong and fast, but they have terrible splits (barely passing right angle) and both of them used to do competetive long distance cycling
is this coincidence or is my question true
 
Your pelvis is a bone. The final size of your own pelvis is determined by genetics, not by activity. When you ride a bicycle, you sit on the ischial tuberosity, also known as the "sit bones."

Your pelvis can't "grow over your hip joint." So, I don't really know what you're talking about there. Your hip joint is made up of the acetabular portion of your pelvis (the socket) and the rounded head of the femur.

If you want to know about anatomy and stretching, you should talk to somebody who is a yoga instructor, or a professor in the Kinesiology department at your local college. They can fill you in on the mechanics of stretching. I think you're really asking, "what determines my flexibility?"

Before you engage in any kind of stretching program to increase your flexibility, PLEASE talk to a professional. If you just start doing things based on pictures in a book, you can really hurt yourself. Maybe you should take a yoga class? It might be fun, and your teacher can answer questions. Both men and women take yoga.
 
your muscles (leg, hip, butt) shorten/get stronger but less flexible as they are used in cycling, while you slack on stretching.

in the winter, you lose some of that muscle
 
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