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TOPIC: Resting heart rate of 44 and calorie burn

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March 25, 2012 5:40 AM
Hey Yall!
I've recently gotten my resting heart rate down to 44, does that mean it's going to be a lot harder for me to burn calories during my workouts? If so that really sucks, Im doing Insanity right now and training for my first half marathon in May. I really want to be 130lbs so I would have to lose 6 more pounds, but is that going to be possible now.
Thanks Jess
  4905395
March 25, 2012 6:04 AM
When you've gotten in shape you just have to run faster to get the heart rate up to the same point it was before. But that is the point of getting into shape for a race.
  2927295
March 25, 2012 8:34 AM
bump
  4905395
March 25, 2012 8:36 AM
yes as the above poster said, now you will have to work harder, or run faster to get your heart rate up to where it was before..
March 25, 2012 8:37 AM
the more in shape i get, the lower and lower my calorie burns from doing the same work out, and the lower my heart rate gets.. i just have to push harder
March 25, 2012 8:37 AM
As you get stronger you'll have to work harder to elevate your heart rate. That's a really low resting heart rate, where are you when your just walking around the house doing mundane tasks?
  4067277
March 25, 2012 8:48 AM
Thanks yall! tjsusong: just doing normal things during the day it probably goes to 60s-70s. I run and started doing Insanity before that I did Slim in 6 but i've always been an athlete and in shape until I had my daughters. I guess ill have to start pushing myself harder. I start at a gym next week, got a great deal of $6 a month at a brand new gym :) Maybe ill get with a personal trainer and see what I can do.
  4905395
March 25, 2012 8:52 AM
QUOTE:

the more in shape i get, the lower and lower my calorie burns from doing the same work out, and the lower my heart rate gets.. i just have to push harder


This!

The things that used to get my heart rate up? Well, they don't work anymore. I used to be able to get it up while walking at 3.5 and now? Well, it requires me to be lightly jogging at 4.2 to get it up. And my calorie burns are so much lower than they used to be. I wish I could be my size and burn 800 or more calories on the treadmill again.
Edited by chevy88grl On March 25, 2012 8:53 AM
  3200790
March 25, 2012 8:53 AM
QUOTE:

Hey Yall!
I've recently gotten my resting heart rate down to 44, does that mean it's going to be a lot harder for me to burn calories during my workouts? If so that really sucks, Im doing Insanity right now and training for my first half marathon in May. I really want to be 130lbs so I would have to lose 6 more pounds, but is that going to be possible now.
Thanks Jess


No--not unless you run slower.

Your resting heart rate, per se, does not affect your calorie burn in any way.

The amount of calories your burn during exercise is affected by the [absolute intensity of exercise] and [body weight]. So, if you are working at the same intensity (e.g. running 6 mph) and body weight is the same, your calorie burn at that workload will be roughly the same. Your heart rate may be lower at that absolute workload (6 mph) because of an increased fitness level and resulting lower resting heart rate, but your calorie burn will be the same.

Heart rate is a "relative" indicator of intensity. By that I mean that heart rate reflects the "percentage of maximum" at which you are working. It doesn't tell you what workload that percentage represents. Maximum heart rate doesn't really change with exercise training. An exercise heart rate of 150 might represent 80% of one's maximum. After training, that 150 heart rate will still be roughly 80% of one's maximum. The difference is that, with training, one's maximum aerobic fitness level increases, so now one can work HARDER at an 80% maximum heart rate than before--e.g. now one might have to run at 6.5 mph to achieve an 80% heart rate effort, instead of 6.0 mph.
March 25, 2012 8:56 AM
QUOTE:

the more in shape i get, the lower and lower my calorie burns from doing the same work out, and the lower my heart rate gets.. i just have to push harder


If you are doing an unstructured workout, like a class or circuit training, it might be that, with an increased fitness level, you are not pushing yourself as hard in the movements. However, the lowered heart rate does not, by itself, mean you are burning fewer calories.

In any case, pushing harder is usually a good thing.
March 25, 2012 8:57 AM
Well I guess my first question is, How did you get your heart rate down to 44? What did it used to be?
  5205248
March 25, 2012 8:57 AM
QUOTE:

QUOTE:

the more in shape i get, the lower and lower my calorie burns from doing the same work out, and the lower my heart rate gets.. i just have to push harder


If you are doing an unstructured workout, like a class or circuit training, it might be that, with an increased fitness level, you are not pushing yourself as hard in the movements. However, the lowered heart rate does not, by itself, mean you are burning fewer calories.

In any case, pushing harder is usually a good thing.


lol well according to my heart rate monitor it does, and i follow that

also, i dont do fitness classes, i run, which is why i posted in this
Edited by katie133 On March 25, 2012 8:58 AM
March 25, 2012 8:58 AM
Well I thought it was bad to have a below normal heart rate. Mine showed 53 at the drs office once and I thought the nurse was going to stroke out over it being too low.
  12748489
March 25, 2012 9:00 AM
QUOTE:

QUOTE:

Hey Yall!
I've recently gotten my resting heart rate down to 44, does that mean it's going to be a lot harder for me to burn calories during my workouts? If so that really sucks, Im doing Insanity right now and training for my first half marathon in May. I really want to be 130lbs so I would have to lose 6 more pounds, but is that going to be possible now.
Thanks Jess


No--not unless you run slower.

Your resting heart rate, per se, does not affect your calorie burn in any way.

The amount of calories your burn during exercise is affected by the [absolute intensity of exercise] and [body weight]. So, if you are working at the same intensity (e.g. running 6 mph) and body weight is the same, your calorie burn at that workload will be roughly the same. Your heart rate may be lower at that absolute workload (6 mph) because of an increased fitness level and resulting lower resting heart rate, but your calorie burn will be the same.

Heart rate is a "relative" indicator of intensity. By that I mean that heart rate reflects the "percentage of maximum" at which you are working. It doesn't tell you what workload that percentage represents. Maximum heart rate doesn't really change with exercise training. An exercise heart rate of 150 might represent 80% of one's maximum. After training, that 150 heart rate will still be roughly 80% of one's maximum. The difference is that, with training, one's maximum aerobic fitness level increases, so now one can work HARDER at an 80% maximum heart rate than before--e.g. now one might have to run at 6.5 mph to achieve an 80% heart rate effort, instead of 6.0 mph.



^^^^^^^This!^^^^^^^^^^^^^^


This biggest difference (I've found) in improving my fitness is my heart rate recovery time between intervals or post exercise.
March 25, 2012 9:01 AM
When I started running over a year ago it was 80s and since then I definitely run more weekly and I exercise daily (Insanity, Slim in 6, weight training), I was very surprised when I took it in the morning and it was that low. But that just shows that Im doing something right because the fitter you get the lower its supposed to go :) And I definitely feel fitter.
  4905395
March 25, 2012 9:03 AM
Ok. As long as it is not that low from taking a medication. It is ok to be that low if it is because you are FIT. But if you are on any medication that regulates blood pressure/heart rate I would advise your doctor. Some people say that having a lower heart rate makes it a bit more challenging to burn calories....But just stay active as you are and you will be fine!
  5205248
March 25, 2012 9:09 AM
aquasw16: No im not on any medication, just fit I guess :) After I do my run today I'll be able to gage if my calories burned is the same, hopefully it will be but I will push harder if I have to . I guess sometimes we have to get out of our comfort zones to see the changes :)
  4905395
March 25, 2012 11:41 AM
QUOTE:

Well I thought it was bad to have a below normal heart rate. Mine showed 53 at the drs office once and I thought the nurse was going to stroke out over it being too low.


A lot of medical people don't have much experience with athletically-conditioned people who still look like average folks. And they often don't know any more exercise physiology than a "lay" person. So, the nurse's reaction doesn't surprise me.
May 17, 2013 8:09 AM
I have a HR of 44 as well. I have worn a HR monitor off and on for years and it does matter b/c you do burn less calories when your heart is in better shape. Try changing up your routine. Instead of just running straight for an hour, do some interval workouts in between. You'll just get in more and more shape ;) Just be glad your scale hasn't gone up!!
May 17, 2013 9:01 AM
QUOTE:

I have a HR of 44 as well. I have worn a HR monitor off and on for years and it does matter b/c you do burn less calories when your heart is in better shape. Try changing up your routine. Instead of just running straight for an hour, do some interval workouts in between. You'll just get in more and more shape ;) Just be glad your scale hasn't gone up!!


No you don't--the HRM calorie display is lower because the settings are out of date and the HRM does not know your fitness level has increased. If you are working at the same workload and weight has not changed, you are still burning essentially the same number of calories.
May 17, 2013 9:06 AM
QUOTE:

Well I thought it was bad to have a below normal heart rate. Mine showed 53 at the drs office once and I thought the nurse was going to stroke out over it being too low.


I love when the person taking my heart rate says "You must be a runner" (which I am)!!!!! My resting HR is around 45
  5241285
May 17, 2013 9:06 AM
44 Beats per minute is astonishing!
May 17, 2013 9:07 AM
TBH I don't understand how HR really works in the sense of burning calories. I don't get how someone who has a higher heart rate due to genetics or medication or something automatically burns more calories or someone who has a lower HR burns less. But caffeine is a stimulant and that will automatically raise your HR. My medication raises my HR so my HRM automatically displays higher calories burns when I run on day I take my medication, I've always wondered why I burn more calories on days my HR is higher at rest, even tho I'm doing the same level of cardio as the days I don't take it. I feel like HR can kind of be subjective as far as calorie burns. But again I have no medical knowledge. I guess you could try drinking a coffee before your work out, it should raise your HR at bit and I guess in theory that means you'll burn more calories?
  40829395
May 17, 2013 9:12 AM
A higher HR =/= higher calorie burn. HRM's use an assumption that you are working at X% of capacity based on where your HR is relative to max HR. But, it is just an estimate, the real determinant of caloric burn is oxygen uptake durning exercise, which most HRM's just give a generic estimate, but the more fit you are the more oxygen you can take in with a lower HR, so that is an issue with HRM's that don't allow you to input your "real" V02Max.

The real caloric burn is based on amount of work performed (duration, weighed, speed, distance, etc) HR is just used as an estimate and in most cases if pretty accurate, but the more fit you are the more likely it will be to under estimate your burn, but for unfit it may be more likely to over estimate your burn.
Edited by erickirb On May 17, 2013 9:12 AM
May 17, 2013 9:12 AM
Mine is naturally 40bpm and always has been. I have a heart murmur too. My cal burns can be really low. It doesn't matter as I benefit in loads of other ways as well.
  36989760

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