I looked through these suggestions because I am a woman with right hip arthritis for about 3 years. I have been riding clip-less for more than 10 years without a problem but when I got my new (wonderful) Trek Domane I also got new pedals. When I tried to clip out it took a significant effort and my hip killed. Thanks to the suggestion regarding the R540-LA (Light Action) pedals I can now bike without causing hip pain when I clip out. I highly recommend them!