7 ms·

>to a device that tracks it all the time There is the problem with hand devices and quality of measurements they do Article describe it more properly If you

by 9dl 7y ago

>to a device that tracks it all the time There is the problem with hand devices and quality of measurements they do Article describe it more properly If you have heart problems and you need some measurements there are a lot of medical _calibrated_ devices for that There are 0 devices for that which has only hand wearable part Also consider such cases when such devices can do a lot of harm https://www.theguardian.com/world/2018/jan/28/fitness-tracking-app-gives-away-location-of-secret-us-army-bases https://www.theguardian.com/world/2018/jan/28/fitness-tracki... Any tech has pros and cons

macintux 7y ago
You keep moving the goalposts. First you claimed they weren’t useful. Now they’re simply inaccurate (somewhat valid, but see below) and when used stupidly can be privacy problems. I can’t argue the latter, but that’s not just a smart watch problem. Regarding accuracy, though, the Apple Watch is very accurate for heart rate, which is important because it can alert the wearer to dangerous heart conditions. It’s also best-in-class accurate for calorie expenditure, which is fine for general day-to-day tracking and dietary planning. https://www.macrumors.com/2017/05/24/apple-watch-heart-rate-most-accurate-fitness-study/ https://www.macrumors.com/2017/05/24/apple-watch-heart-rate-...
- 9dl 7y ago
  Not useful - because inaccurate on individual level Not useful - because algorithms for caloric expenditure are usable now only for group level experiments >that’s not just a smart watch problem True https://www.mdpi.com/2075-4426/7/2/3/htm#jpm-07-00003-f003 https://www.mdpi.com/2075-4426/7/2/3/htm#jpm-07-00003-f003 >Overall, heart rate error was within the acceptable error range for the majority of task/device combinations, but EE error exceeded the allowed threshold for all tasks and devices. And I repeat - for group level experiments such devices are good For individual, without calibration - not https://www.mdpi.com/2075-4426/7/2/3/htm#fig_body_display_jpm-07-00003-f002 https://www.mdpi.com/2075-4426/7/2/3/htm#fig_body_display_jp... You can see this on Fig2. That individual dots on image - that may be error on your device on your body And even more - I do not know what for you need your pulse measurements. Even accurate You do not need that number when you reach your peak velocity and do not need it when your sitting >It’s also best-in-class accurate for calorie expenditure, which is fine for general day-to-day tracking and dietary planning. I know even more accurate device for such purpose Scales And btw - scales can be mechanical so they can't send your data

by 9dl 7y ago

macintux 7y ago

You keep moving the goalposts. First you claimed they weren’t useful. Now they’re simply inaccurate (somewhat valid, but see below) and when used stupidly can be privacy problems. I can’t argue the latter, but that’s not just a smart watch problem. Regarding accuracy, though, the Apple Watch is very accurate for heart rate, which is important because it can alert the wearer to dangerous heart conditions. It’s also best-in-class accurate for calorie expenditure, which is fine for general day-to-day tracking and dietary planning. https://www.macrumors.com/2017/05/24/apple-watch-heart-rate-most-accurate-fitness-study/ https://www.macrumors.com/2017/05/24/apple-watch-heart-rate-...

9dl 7y ago
Not useful - because inaccurate on individual level Not useful - because algorithms for caloric expenditure are usable now only for group level experiments >that’s not just a smart watch problem True https://www.mdpi.com/2075-4426/7/2/3/htm#jpm-07-00003-f003 https://www.mdpi.com/2075-4426/7/2/3/htm#jpm-07-00003-f003 >Overall, heart rate error was within the acceptable error range for the majority of task/device combinations, but EE error exceeded the allowed threshold for all tasks and devices. And I repeat - for group level experiments such devices are good For individual, without calibration - not https://www.mdpi.com/2075-4426/7/2/3/htm#fig_body_display_jpm-07-00003-f002 https://www.mdpi.com/2075-4426/7/2/3/htm#fig_body_display_jp... You can see this on Fig2. That individual dots on image - that may be error on your device on your body And even more - I do not know what for you need your pulse measurements. Even accurate You do not need that number when you reach your peak velocity and do not need it when your sitting >It’s also best-in-class accurate for calorie expenditure, which is fine for general day-to-day tracking and dietary planning. I know even more accurate device for such purpose Scales And btw - scales can be mechanical so they can't send your data