My numbers are very similar to yours, and I’m in the same boat. I suspect on my end I’m not recovering enough or I’m doing too much in a day (7-8 hour hikes at Z2 every weekend). Curious to see what the experts have to say on this.
I’m six months into a Z2 program. My aerobic threshold has been confirmed from lab tests at 138, my lactate threshold is 163, and my max HR is 188. I’m 55 years old.
I’m getting in 10-ish hours a week of running just sub-AET, but at a glacial pace of 11 min/mile that hasn’t improved in six months. I breath easily at that pace, but it refuse to get better.
What am I doing wrong? I’ve added back in some speed work—30/30s once a week— and I do strides at least once a week, but I’m not getting any faster. Sure, I can go faster, but with heartrate consequences, with 9 min/miles jacking HR to 150+, which I can hold, but it ain’t below aerobic threshold.
Anyone have any thoughts? Not obvious to me why I’m not getting any faster.
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