Achy, tingly legs

Posted By Scott on July 20, 1998 at 16:23:36:







Hello,
I began training for a marathon 9 weeks ago (37, male).  After 3 weeks of
high intensity running both of my legs began to ache while sitting.  They
feel tingly and crampy, and as though they are not getting enough blood.
They feel weak until I walk for a few minutes then they feel better. My
feet also ache once in a while, and both at the same time. Sitting seems
to cause a fatigued feeling in my butt muscles.  After 10-15 days the
symptoms subside, then return upon additional running (cycling seems to
be OK).  Today I visited my sports medicine doctor.  Because of the
bilateral symptoms he ruled out muscular overuse. An x-ray of the lower
back appeared normal, and sciatica tests were OK. Reflexes of feet and
legs seem normal, as are leg pulses.  He seems as mystified as I am, and
suggested I may want to see my family doc for further ideas.  Any
ideas for causes (or recommended tests)are appreciated!