Dear Group,
I have a bicycle racing medical question to anybody who might diagnose
an explanation. I train for my annual Louis Reed 10 mile Time
Trial--which few attend. My training is to simply ride as hard and as
fast for the same sixteen miles near sunset when the wind is low. I
ride as hard as possible commensurate with finishing. I am now 68. So,
first out last Sring I was returning into Brandon when suddenly a big
change happened in my head. But it was not a headache. I continued to
my driveway and stood with my bicycle not wanting even to sit down. I
was just slightly confused as I couldn't remember just how many miles I
had ridden. And I was slightly nauseated.
I did not go out again until I was on a more even diet--as I was dieting
away those last "winter pounds" on the first ride. Well, a month later
the same thing happened at the edge of Brandon. It was sudden and all
in the head. It was not a headache but a complete change of
"consciousness." I was not excessively breathless or anything like
that. I walked the bike home. Soon it was July and race time and I
had not trained. I went out in the mid-day and completed the sixteen
miles without incident. But during the LR Time Trial, it happened on
about the seventh mile and I immediately stopped for about four minutes
while it passed and proceeded on at my earlier pace. There is no
increase in blood pressure in these as I can determine later.
My question is it some form of "hypoglycemia" with glucose depletion
during racing? Why should this happen only now in my life? Has anybody
else experienced this? I have no reason to expect TIA-type blood flow
problems. For twenty years I have been on a no-fat, low sugar diet.
If anybody has experienced--please let me know. I have largely given up
the bicycle until I can figure this out since I live alone.------ew
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