I’ve been learning Chi Running for about 5 months now. In January I did my first half marathon (trail) using the Chi-Marathon program (minus any HRM feedback). Did a 1:51:45 (8:31/mi). Felt really good. Fairly relaxed, effortless and injury free.
I signed up for my first full marathon for mid May and also started to use a HR monitor for the first time. Quite a shock. I’m 31, 167lb, 5’ 11” (Resting HR of about 58). Before starting HR training I was running 20-50 miles a week for 4 months + feeling great. What I thought was my usual super relaxed pace PRE5-7 (8-9/mi) was actually giving me a heart rate of about 175+.
For the past 4/5 weeks I’ve been following the “conditioning” phase of the Chi Marathon book, and painfully staying in my “aerobic zone”, in the hope of getting in 8/10 weeks of aerobic base building. I seem to be having seriously disastrous results! My paces are gradually getting slower and cardiac drift at times seems to be getting worst. (although I have realized that certain shirts generate static that elevates the HR monitor falsely)
Roughly I’ve been:
Mon: sub HR 145 run for 45 mins
Wed: sub HR 161 run for 1 hour
Thu: sub HR 145 run for 45 mins
Sat: sub HR 161 run for 2 hours
Sun: Swim 1 hour HR approx 135
My sub HR 161 pace started out at about 10:22/mi 5 weeks ago. Now after 5 weeks of aerobic training my pace starts out at about 11/mi, and quickly drifts to around 12:30/mi
My sub HR 145 pace at the start of a run is about 12:30/mi, but within 2 or 3 miles drifts down to 14:30/min and I’m HRM bonking.
I also think that my morning rest HR is trending upwards!
Because I’m slowing down so much and doing time based training my weekly miles are steadily decreasing.
- Is there hope that my paces will start increasing?
- Given that participating in a race can +10 to your HR is it really possible to run sub MAF marathons? Even at mile 25 - especially given cardiac drift!?
- How could you ever run negative splits in a race, if starting out at MAF (by definition a ridiculously easy pace) when cardiac drift is such a factor?
- What about running long hill stretches? It just seems impossible to stay below MAF HR readings.
- Should I sign up for a pig heart transplant?
It’s been v.frustrating training with the HRM. I’m considering doing the base training for 8/10 weeks then switching for the final 6 weeks pre-marathon to doing 2 runs a week with the HRM and 2 faster runs just using the PRE method - otherwise I feel like I’m going to be running a 7-8 hour marathon time in May, when it seems like sub 4h is easily doable. Am I still going to get any benefits from these painfully slow weeks of HR training? Would I be risking an early death by doing prolonged high HR runs?
I’ve read many of the post regarding HRMs on the forums, but thought my case is noteworthy given that I seem to be getting worst with HR training :^) Any help / advice much appreciated!!!