11-03-2014 09:14 PM
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  1. pj737's Avatar
    Caloric burn (and other things) can be measured very accurately with the galvanic skin response sensor, it's not restricted to needing a HR reading. I don't know how this Band works but it would be entirely possible that MS found they can get data that's just as accurate by using a combination of the sensors less frequently, or at different intervals, and at the same time save the battery life.

    I can understand if you have a requirement for 24/7 high resolution HR tracking, this device seems to fall short, but for the things that have been mentioned so far like caloric burn, accurate HR tracking during exercise, etc. they may not all need that level of HR tracking. There's other ways to achieve the same goal.
    That is fine. I agree if they have (technologically) figured out other ways to determine accurate caloric burn, etc. But they should market the product that way and gloat about those advancements - not tell the world the device does something it clearly does not.
    10-30-2014 10:22 PM
  2. Upstate Dunadan's Avatar
    Caloric burn (and other things) can be measured very accurately with the galvanic skin response sensor, it's not restricted to needing a HR reading. I don't know how this Band works but it would be entirely possible that MS found they can get data that's just as accurate by using a combination of the sensors less frequently, or at different intervals, and at the same time save the battery life.
    I would agree with this. While an elevated HR can you show you are working harder (and burning more calories) it can also simply indicate you are out of shape and your cardiovascular system is not very efficient, as in higher HR to circulate more blood and provide more oxygen to your organs. As you get more fit, your VO2 (I think) levels increase, so your body becomes more efficient at carrying oxygen. That's why cardio only workouts are a catch. As you become more fit, your body becomes better at handling the "stress" and you need to increase your effort to get the same spike in HR.

    I have no great understanding of galvanic skin response, but what I have read would indicate to me in certain types of workouts, this would be a greater indicator of calories burned than HR.
    10-30-2014 10:30 PM
  3. crelim's Avatar
    Crelim- where do you wear the strap? Should I wear it back enough where I should be able to fully bend my wrist without feeling any type of constraint? I'm still having trouble deciding if I should wear it closer to my wrist (and a little looser, but still snug) or right behind my wrist bone "bump" and a little tighter. Interested to hear your thoughts. Thanks for the help!
    I would wear it where ever it is comfortable. The sensor is really designed to adapt. I personally wear it snug behind the little bump on my skinny wrist :-) Oh and the screen in on the inside of the wrist just because I find that comfy and better looking.

    Edit: Should also mention that it was good seeing that HR tracked well for you compared to your chest strap. I can assure you that these algorithms and HR metrics are only going to get better. The HR estimation despite motion using an optical sensor on this band is state of the art in my opinion. I have used many optical HR, including making one myself as part of a grad class and it is non-trivial, especially making it work while doing crossfit, lifting etc., and this bad boy works!
    10-31-2014 02:09 AM
  4. timmorris83's Avatar
    I kind of look at this as a smart feature used to save battery. The device has movement trackers right? So it will take your heart rate and if you are not moving it will not continuously track. Why would you need a bunch of heart rate data when you are resting, constantly reporting a heart rate of 60, or whatever it may be. If you look at the device after taking even a short walk, you will notice the heart rate sensor is locked or at least displaying a higher number, which to me says the device was activated by movement. If I feel like a need a more accurate reading, I just go the HR display until it says locked, which will stay locked until the device times out.
    11-03-2014 12:40 PM
  5. shawncade's Avatar
    Unfortunetly when comparing the HR results to a Polar strap that I know is very accurate, I have found the Band's HR to be off by up to 30 bpm's and always in acquiring mode. Definitely a big dissapointment. I could live with it off by 10 beats but not 20 to 30.

    I think without a doubt MS algorithm is off or the mointor is not proven like the Mio, they should have just licensed that technology like TomTom did.
    11-03-2014 04:12 PM
  6. dbregman's Avatar
    shawncade -I posted some comparisons with my comparison thread with the Polar Loop - I will post more and I do more head-to-hear comparisons.
    11-03-2014 09:14 PM
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