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NANLEYKW SparkPoints: (76,157)
Fitness Minutes: (31,130)
Posts: 867
11/9/13 8:44 P

As SergeantMajor says, your HRM can't accurately estimate the number of calories you burn doing strength training; it's only designed to do those calculations for cardio.

11/9/13 10:11 A

Unfortunately the algorithms used to set up heart rate monitors are not designed to measure anything other than steady sate work making them inaccurate and not capable of monitoring work done during strength training. In addition when done properly strength training has a carry over effect called exercise post oxygen consumption (EPOC) which means you are continuing to have an elevated metabolic rate following strength training which continues to use calories. The EPOC renders the values of a heart rate monitor as not meaningful for strength training. Even for cardio they will only produce guesstimates since the algorithms are based on a standard bell shaped curve meaning 25% of any population will fall at one or the other end of the curve.

To increase the degree of accuracy as to your calorie count monitor calories in not out, you can not out exercise a bad diet.

FERNCREST Posts: 1,023
11/9/13 6:32 A

I use mine especially when lifting as it tells me whether or not I'm working hard enough and how long I need to rest between sets, love it!

MAHLISHERYL SparkPoints: (191)
Fitness Minutes: (280)
Posts: 5
11/9/13 3:36 A

Thank you. My HR is certainly up there. I was a very unfit and very obsess and now are enjoying pushing myself and the challenges. Thank you.

SELENITYLUNARE SparkPoints: (16,509)
Fitness Minutes: (8,386)
Posts: 704
11/9/13 3:15 A

I don't understand why it would not measure the strength training properly since it is monitoring your heart rate and HR affects metabolism... Unless your HR is dropping low enough for it to think you are doing normal activities.

You could always use the HRM for your cardio only. SP lists how many calories you burn with strength so you could compare SP and the HRM to see if there is a great disparity.

MAHLISHERYL SparkPoints: (191)
Fitness Minutes: (280)
Posts: 5
11/9/13 1:45 A

Afternoon. I have recently bought myself a FT7 heart rate monitor that I am wearing to the gym up to 4 times a week. I have a programme at the gym where I am doing a total of about 90 minutes a time. During this time I am doing some cardio and then a mix of exercises comprising of legs, core, arms etc. Most are 3 sets of 15 reps with varying weight limits. I am increasing these as I go. Today I was there for the 90 minutes and was pretty happy that my monitor said that I had burnt 655 calories. Now I am reading that they do not accurately record strength or weight exercises.
Do I only use this for cardio? I have been recording everything under cardio
Thanks for your help

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