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Average validity measurements (Intraclass correlation, ICC; Mean average percentage error, MAPE; and Agreement) for energy expenditure, heart rate, and step count in the Apple watch.
| Energy Expenditure | Heart Rate | Step Count | |||||||
|---|---|---|---|---|---|---|---|---|---|
| ICC | MAPE | Agreement | ICC | MAPE | Agreement | ICC | MAPE | Agreement | |
| Apple Watch | 0.493 | 27% | −232 to −14 | 0.95 | - | −13.5 to 14.6 | 0.727 | 1.08% | −69.8 to 92.0 |
