Below is a link to an article about HRM and training...it may help you have a better insight.
Know that calories burn is not based on heart rate alone...it is actually based on the amount of oxygen one consumes in relation to large muscle activation, which in turn increases one's heart rate in order to get the nutrients and oxygen to the muscle. The more you workout and the less you way, the more efficient your body becomes at doing so and the more you adapt to this change you have to keep raising the bar (working out more intensely or longer) to reap the same caloric benefits.
Thanks Coach Nancy I have run a calculation with Spark for comparison and it shows 440 calories. I am wondering if my weight status, Obese, and my lack of conditioning will account for more calories burned. I am wondering if Spark is considering a persons condition and how they achieve an average? Once I get into better condition I would hope there would not be as much disparity in the readings. In reading articles about calories burn, in my condition and body mass, should burn more calories than if I was in better condition. But my HRM comparred to Spark is still 557 calories difference. The confusing part is my HRM and the treadmill monitor are very close. However my HRM is a constant read where the treadmill monitor reading is taken maybe 4 times in a 30 min period. I feel the calories burned is very important to my calorie range calculation. I want to make sure I am eating enough to fuel my workouts but not overdo calorie intake..
1/1/10 Start Wht 279 lbs 12/1/15 Goal 180
**Maintain** "OR" set new Goal! 170's maybe??
current weight: 199.0
Fitness Minutes: (58,982) Posts: 780 1/22/13 2:08 P
I usually think my heart rate monitor is good for heart rate but not so good for calories. I use a Couch to 5k app that generates calories per workout, and it is usually within 25 calories of what Spark calculates for me, so I think it's probably pretty accurate. Of course, the most accurate thing would be the FitBit or BodyBugg or similar.
Remember, though, that it's not necessarily important exactly how many calories you burned since exercise has many benefits beyond just burning calories -- for example, you are generating muscle, which will increase your calorie burn at all times, even when you're not working out.
current weight: 186.0
Fitness Minutes: (112,042) Posts: 46,222 1/22/13 12:34 P
That does seem like an overestimation of calories burn to me per your HRM, but quite low for the treadmill, too. Some HRM will pick up outside electrical interferences that can raise your HRM outside the norm which can account for the huge variations. Have you tried using the SparkPeople fitness calculator--selecting the exercise and the time/pace and see what it generates for you?
If anyone wears a monitor I would like to know your experiences. I wear a heart-rate & calorie burn monitor when I workout. The brand is The Sharper Image with a chest strap. I use it mainly for my cardio workouts; bicycle, C25K training, treadmill and rowing machine. The heart-rate (HR) monitor is very close as the treadmill or recumbent bike readings, but where the huge difference is the calories burned readings. For example: During my last treadmill workout, C25K training W1D2, my monitor shows I burned 1007 calories in 61 min. where the treadmill shows I burned only 295 calories. That is a difference of 712 calories! I realize, at my age and out-of-shape condition, I am pushing my HR higher than I should causing my system to work harder. I also realize the treadmill does not realize my body condition and can only consider my HR and take an average. The 1st 10 min. my monitor and the machine calories burned are close, about 15 calories difference. My HR is generally around 145 bpm at recovery pace and spikes out at 175 bpm. (much higher than it should be at my age). My average is around 155 bpm for the workout.
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