Hi, I am a newby here. I have a problem which I hope I can find some answers to here, I have searched and read what I could and cannot really seem to find the information I need to know. I am becoming quite desperate and confused now and hopefully I can get some answers here.
I am a runner and have been a runner for 30 years now, with a few years off here and there due to injury or motivation issues. In the 80’s I ran quite well clocking 14:25 (5000m), 29:52 (10000m) and 2:25 (Marathon). After a long sporting break of about 8 years or so I started running again in September 2015 and very slowly built up my condition so that I could train solidly and race now and then.
In October 2017 I began a Keto diet and am now into my 5th month of running keto, which has had its positive and negative effects. Especially the anti-inflammation effects have been a godsend. I no longer have painful ankles and hips like I did on my high carb diet, I wish I had known about that earlier. I dropped 6 kilos without even concentrating on dieting at all. I had no problems with the adaption phase, maybe a little tired the first week or two when running but nothing else. I measure my blood ketones every day and have been in moderate ketosis (1.5) since I started.
My problem however, is with my running and my heart rate. I am a data junkie and have all my data from all my runs of the last 30 years. I am always monitoring my body and training to look for anomalies or just to optimize my training as best I can. Here are my issues I have which totally confuse me and hope this forum can shine some light on them for me:
- Every morning I measure my blood pressure. Since I went Keto my blood pressure has dropped significantly from 120/80 every morning to 105-110/60-65. That is a large drop. Why is that?
- My resting pulse has gone up from an average of 42 beats in the morning to 50-54 beats.
- My training HR is constantly 20+ beats higher than before going Keto. An easy run for me last year was about 130 bpm. Now it is never under 150 bpm, and even a slight effort uphill or faster pace I shoot up over 160. I do not understand this because I have not changed my training at all. I thought it was only because I was new at keto and it would gradually get better, but it didn’t. After 4 months it hasn’t changed at all. Before Keto I could train comfortably at a 4:30 - 5:00 minute per kilometer pace, now I am lucky if I run under 6 minutes per kilometer. And I have the feeling it is getting worse rather than better. I have been running a constant 80-100km per week without any noticeable drop in my training pulse. Past experience has shown that a 10 week block of aerobic run training would decrease my training pulse at the same pace by a good 10 beats. It hasn’t gone down at all, in fact it has gone up. My HR is also very volatile I have noticed. A slight incline and it shoots up 10 to 15 beats immediately.
- Speed work: Last year before keto, as an example, I did a session of 10 x 400m in 1:20 (average pulse was 155-160). Last week, I wanted to do 10 x 400m, I was dying already by 5 and had to stop after 7 as I was totally exhausted. I was averaging 1:34!!! And my pulse was averaging 170+. I had totally no energy at all, and the more I did the less energy I had, my legs just got zapped completely. In fact any kind of fast running, fartlek etc, is pushing my HR up into the clouds, and my legs are like jelly.
Anyway, after last week’s speed work I just wanted to stop my keto diet, go back to my old high carb days so I can run like I did last year. I was very depressed, and I still am. But before I take this step I thought I would write about my problem here, maybe someone can explain to me that it is something simple and I should not worry, but I fear it will not be so. Am I not suited to Keto run training? Why is my HR up so high, my blood pressure so low? Why is running so difficult now? I am quite desperate about this, I had some pretty high Age Group running goals for the future, and what I thought would help me by changing my diet, is not helping me at all, in fact it is doing quite the opposite. Running was always my greatest passion. But now I am starting to hate it! I would greatly appreciate it if someone could help me on this.