很少看到有網站對這個有所著墨
個人1直覺的曲柄腿長對膝蓋的保護是很重要的
" You risk damaging your knees if you habitually use cranks which are too long, especially as you get older. "
經常使用過長的曲柄腿,容易傷害到膝蓋,尤其是年紀愈來愈增長時.
請參考這裡
http://www.highpath.net/cycles/notes/03.html
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