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TopherMan12

macrumors 6502a
Original poster
Oct 10, 2019
776
880
Atlanta, GA
Raining today so I wasn't able to walk outdoors. Got on my treadmill and selected Indoor Walk from within Workouts on my Apple Watch. The Watch recorded my heart and calories like it normally would, but distance and pace were way off. I'm walking about 3.5 - 4 miles per hour and the app is recording a pace of 28'23" mile. I'm usually under 15'30" mile when walking outdoors. Not sure why it is so far off. Is there a better way to record treadmill workouts than "Indoor Walk"?

Thanks.
 

AlliFlowers

macrumors 601
Jan 1, 2011
4,537
15,739
L.A. (Lower Alabama)
Raining today so I wasn't able to walk outdoors. Got on my treadmill and selected Indoor Walk from within Workouts on my Apple Watch. The Watch recorded my heart and calories like it normally would, but distance and pace were way off. I'm walking about 3.5 - 4 miles per hour and the app is recording a pace of 28'23" mile. I'm usually under 15'30" mile when walking outdoors. Not sure why it is so far off. Is there a better way to record treadmill workouts than "Indoor Walk"?

Thanks.

I just set it to unnamed exercise. Otherwise it doesn't count for me.
 

NME42

macrumors 6502
Sep 15, 2019
475
166
Raining today so I wasn't able to walk outdoors. Got on my treadmill and selected Indoor Walk from within Workouts on my Apple Watch. The Watch recorded my heart and calories like it normally would, but distance and pace were way off. I'm walking about 3.5 - 4 miles per hour and the app is recording a pace of 28'23" mile. I'm usually under 15'30" mile when walking outdoors. Not sure why it is so far off. Is there a better way to record treadmill workouts than "Indoor Walk"?

Thanks.

Two thoughts:

1) Is your watch already calibrated?


2) Did you move your arms or did you hold the treadmill bars? Pace is determined by the movement of the arms.
 

TopherMan12

macrumors 6502a
Original poster
Oct 10, 2019
776
880
Atlanta, GA
Two thoughts:

1) Is your watch already calibrated?


2) Did you move your arms or did you hold the treadmill bars? Pace is determined by the movement of the arms.

I didn't know it needed to be calibrated. And no, I typically rest my arms on the side rail.

Good stuff! Thanks a lot. ?
 

deeddawg

macrumors G4
Jun 14, 2010
11,347
5,332
US
Yeah, if you're not moving your arms there's not much the watch can do on an indoor treadmill unless it's one of the types the watch can connect to. https://appleinsider.com/articles/1...-is-who-supports-it-and-where-you-can-find-it

... and as mentioned above you need to do a few outdoor runs and walks with GPS on for the watch to figure out how your arm movements relate to actual pace / distance -- it's that extrapolation it uses to guess your treadmill pace / distance. Pretty amazing it gets anywhere near, and not something I'd expect much accuracy on anyway.
 
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ukbootlegs

macrumors regular
Sep 20, 2019
234
120
United Kingdom
Also, it’s always under on a treadmill. Every time. It has no GPS so it’s an estimate

it gets close though once you’ve calibrated with a few outdoor runs or walks
 

deeddawg

macrumors G4
Jun 14, 2010
11,347
5,332
US
Also, it’s always under on a treadmill. Every time.

Rhetorical question to consider - how accurate is the treadmill really? Belt stretch, belt-slip, wear/slop in any linkages, etc.

Generally I'd think treadmills will be more accurate on distance/pace simply due to a more-direct measurement mechanism. Yet when comparing to measures, it's always worth considering what assumptions we're making as to accuracy of one vs other.

See Segal's Law. :)
 
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menace3

macrumors 6502a
Aug 13, 2008
574
160
Seattle, WA
Treadmills are not fully accurate. It also takes a while to calibrate on the watch to learn your gait and movement.

At the gym, treadmills are not fully maintained with oil, they are not fully calibrated for my height and weight. Either use your readings and write them down, or just go off the apple watch.

I just used Apple Watch because over time, it has learned my behavior and has surpassed readings on gym equipment.
 
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deeddawg

macrumors G4
Jun 14, 2010
11,347
5,332
US
I just used Apple Watch because over time, it has learned my behavior and has surpassed readings on gym equipment.

Yep. I abhor treadmills and avoid them with a passion, but will use one if the situation requires. My watch does a good enough job with pace/distance. ... and let's be honest with ourselves ... Very few of us truly *need* much accuracy with this stuff... Even +/-10% is going to be sufficient "accuracy".

Sure there are some competitive prize-winning runners striving to hone out every second per mile, but if you're that person you know I'm not referring to you with the above.
 
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ukbootlegs

macrumors regular
Sep 20, 2019
234
120
United Kingdom
Rhetorical question to consider - how accurate is the treadmill really? Belt stretch, belt-slip, wear/slop in any linkages, etc.

Generally I'd think treadmills will be more accurate on distance/pace simply due to a more-direct measurement mechanism. Yet when comparing to measures, it's always worth considering what assumptions we're making as to accuracy of one vs other.

See Segal's Law. :)

I’ve got a treadmill at home in my gym and it’s definitely different to the one I used today in a corporate gym. Even tho I put both on 12k my treadmill feels slower
 
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Strelok

macrumors 65816
Jun 6, 2017
1,437
1,656
United States
I didn't know it needed to be calibrated. And no, I typically rest my arms on the side rail.

Good stuff! Thanks a lot. ?
I forgot the exact reasoning, but you shouldn’t be holding or resting your arms while walking/running on the treadmill. AW has been pretty accurate for me.
 

ukbootlegs

macrumors regular
Sep 20, 2019
234
120
United Kingdom
I forgot the exact reasoning, but you shouldn’t be holding or resting your arms while walking/running on the treadmill. AW has been pretty accurate for me.
Same reason why pushing a shopping trolley doesn’t count steps. You wear it on you arm so if it’s elevated and static it won’t record anything
 
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