Yes, I am sure that over the years the intensity of the training has stressed my heart. I'm fit but I would imagine there's also been damage that has occurred, and I already know that my heart is a lot larger than an average person for a start.
The 196bpm was actually from the exercise test I did with the cardiologist last month
The highest I have ever hit in training was 191. If I'm honest I feel pretty comfortable and in control right up until my HR gets into the high 180's (as in I can still hold a conversation); the cardiologist told me that I simply have a high aerobic threshold which is probably why I can hold a fast/hard pace for a long time.
I'm back into the training again now (powerlifting rather than the endurance stuff), but I'm definately aware that I need to be careful. Just to put things into perspective, the cardiologist explained to me that during a 24hr Holter Test an average person would typically have 500-1,000 ectopic heartbeats. During my 24hr test I had over 18,000
Did I read above in one of those documents that you take fish oils? I ask because you know sometimes fish oils can exacerbate or trigger irregular heart beats in some people.