I recently joined a gym, with the sole purpose of getting fit. In my induction I had a checkup and had a resting heart-rate of 99. After a few months I'm down to 64, which is far more normal of course. However, when I'm exercising it shoots up incredibly high.
While cycling or on the cross trainer I can work pretty hard with it remaining about 150-160, which is probably still a bit high, but considering I was told around 140 as an ideal rate, I'm hoping as my fitness improves I can remedy that. But I started doing a couch to 5k program, and that's where the bigger figures came from.
So far I am only in to week two, currently running (it's not flat out, 9kph on the treadmill), where I have to run for 90 seconds then rest for 120. After the run, my heart rate is way up above 180, once almost 190. After resting for the two minutes it's usually back down to the mid 160s. I told this to my advisor and he said that's too much, especially considering my family actually has a history of heart problems (my dad had a heart attack in his 30s, angina, etc).
I am 28, 6'2" and 250lbs, so obviously I need to lose around 50lbs, but while running I don't feel I can't manage it. Yes it's quite hard work, but I can do it. But obviously I don't want to wreck my heart! I read this: Is this heart rate too high for a beginner runner? and read about how in some schools of thought it should be between 60% and 90%, so I'm wondering if it's still possible to run, as the couch to 5k program only last about 20 minutes per session?
My question is this: I trust my advisor, and I will probably take him up on the offer of some personal training for some more in-depth advice on how to best push myself without hurting my heart, but has anyone else been in, and overcome, a similar situation before? Is it a case of dieting and doing exercises that don't max my heart out for a while until I'm fitter so that I have less weight and can run without it peaking so much?
The main thing I think that's confusing me is that when I stick to the heart-rates suggested to me, I just don't feel like I'm working hard at all. I don't want to be a body-builder, I just want to lose weight and improve my fitness, with a long-term goal of being able to run 10k in one go. Any advice or links to reading so I can further expand my (admittedly minimal) knowledge before I fork out for PT would be most gratefully accepted.