Apple Watch Ankle Test Matches Wrist Data on 3.57-Kilometer Walk

7 articles · Updated · Boy Genius Report · May 25

A Series 11 Apple Watch worn on the ankle logged nearly the same results as wrist wear during a 3.57-kilometer walk, with average heart rate at 120 bpm versus 121 bpm.
Calorie tracking was also close: the ankle test showed 200 total and 134 active calories, compared with 202 total and 138 active calories on the same route the next day.
The comparison suggests ankle wear can work as a backup when the wrist is impractical — including boxing, surgery, kitchen work, tattoos or skin conditions — if a larger, secure band keeps sensors against the skin.
Heart-rate accuracy may vary more than step counting because optical sensors depend on skin contact and blood-flow detection, so results may differ by person and workout.

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