25 november 2009 kl 05:51
Maffetone svarar.....
Hello Dr. Phil,
For about six month´s I have been practicing low pulse training (age 35, MAF-puls 155). Got some small increase in speed during this period.
I think I have always been kind of sugar/carb-driven, sodas, pasta, fruits, icecream, bread and lowfat products.
For about 2 month´s ago I started practicing the popular (In Sweden LCHF= “Low carb High Fat” ) low-carb diet. This meens about a of maximum 20gram´s of carbs a day, and a lot of fats/proteins instead (eggs, meat, cream, butter, fish, chicken, nuts, seeds).
The first weeks I was very tired, but after about 6 weeks I felt much better. I feel more fit, and seems to have preserved muscles, and lost fat. Have no more thirst for sugar anymore.
Still doing almost low pulse exercise, but both the rest and work pulse has been increased by about 10 strikes a minute. That´s my main concern.(Previously rest pulse, in the morning was about 35-40, now it´s 50.
Already a power walk increases the pulse to about 150-150.
A moderate jog exercise, the pulse gets about 165 (instead of 155 like it was before LCHF, at same speed).
I have read in other forums that people experiences the same problems, but have found no explanation.
So therefore I do most power walks for the moment. But at the same time I have also done a couple of tempo tests (after warming up carefully). I hit my personal best in a “2 km tempo run”, and still felt I could have been pushing even harder (no fatique, lactic acid, just a strong feeling). But the pulse was about 180-190 during this run.
What do you think, is it still adaption problems? Or will the pulse decrease as times go on?
//MFR
Hi,
it´s difficult to say just how serious this sounds without actually examining you. But I´ll comment on your statements.
First, if you´re 35 years old, your max aerobic HR (MAF HR) is not 155. So you may have been overtraining for the past six months. This can sometimes give you a bit more speed temporarily.
If you´re only eating a total of 20 grams of carbohydrates, that´s quite low. And if you were tired for "weeks," it tells me something in the diet was not right for you. Healthy changes in the diet should provide almost immediate improvement in the way one feels. It´s great that you lost your addiction to sweets.
If your resting and training HR is consistently about 10 beats higher, you have a clear indication that either you´re overtrained, or some other problem exists. This could be stress, diet, etc.
It would seem that your proper training pulse as per the 180-Formula should be closer to 140. If this is the case, training at or below this HR for ALL training should help you, including getting faster at the same HR. This also means no tempo runs or any other high HR training, and no weighs.
Let us know how you´re progressing.
Dr. Phil
Nov 21, 2009 1:01 AM
