Hi Mary, it
It was Tony who suggested that I slow down, and I'm thinking it was good advice. The whole idea of heart rate zone training is that working at different percentages of your MHR provides different kinds of conditioning. Keeping your heart rate between 75 and 85% of your MHR is supposed to strengthen your heart thus improving endurance and stamina ( the two are distinct attributes, but I can't recall the subtle difference).
The fact that I'm comfortable running 45 mins at 90% MHR is irrelevant - I need to slow my heart rate down while training to below 85% of MHR in order to strengthen it. Like any other muscle, it gets bigger if exercised properly - when it's bigger it pumps more blood per beat - THAT'S what I need if I want to stop pooping out at 11 - 12 miles. It's not a bad thing that I can run 10 miles at 10 mins/mi (for example), but I want to be able to keep that pace for just a few miles more, or maybe even for a full 26 mi.
If I keep training at too high a heart rate, I will get faster, but I won't last any longer.
So, the training at 90 - 95 % MHR isn't a waste, it just isn't enough. I need to combine that with long SLOW runs, to enlarge that heart muscle, make it stronger, last longer. Since I can't run slow enough to keep my HR below 85%, then maybe a walk/run strategy is my answer.
Our next lecture at the running store is on HR training...
Let's face it, at my age I'm not trying out for the national Olympic team. However, like everyone else contributing here, I want (need, Jones for) improvement - an indication that my extra efforts are yielding some results.
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I bet you can still book a room in Columbus, but you should act fast to get a decent rate.
These destination races are great. One of the instructors at our local running store started marathon training almost 30 years ago. Set a goal: "I want to run a marathon in each of the 50 states before my 50th birthday!"
A few years ago, at age 46, he ran his 50th, in Denver. Not bad for a crazy Canadian!
His marathon total is now 77: his last one was Boston in record heat this April. Not his best time (the heat was horrendous), but another medal (he has an entire room in his home with running souvenirs).
Maybe I'll see you in Columbus!
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I will continue to read, ask questions about HR training and share whatever I learn here. We can learn, debate, compare notes - whatever works.
You folks are the best!