There are a number of possible causes, of which true hypoglycemia is one of the less likely. Despite a low-fat healthy diet, it is possible to develop transient cardiac arrhythmias and the like. I suggest a prompt visit to your personal MD and if that is not satisfactory, a local cardiologist of which there are several good groups in the area. The arrhythmia may be quite transient and a cardiologist may want you to wear a monitor for several days in order to detect such rare, transient events. Treatment can be quite successful with return to activities.
Another possibility is a cerebrovascular cause, which seems less likely, but is another problem that should be taken care of promptly. I do not want to be alarmist, but I think you need to get medically evaluated reasonably soon. It may take several investigations to find the probable cause. Regards and best wishes. On Thu, Sep 30, 2010 at 4:28 PM, Eric Westhagen <[email protected]> wrote: > 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 > _______________________________________________ > Bikies mailing list > [email protected] > http://lists.danenet.org/listinfo.cgi/bikies-danenet.org > -- W. Madison _______________________________________________ Bikies mailing list [email protected] http://lists.danenet.org/listinfo.cgi/bikies-danenet.org
