Source :
Apple Intelligence :
• Heart Rate and Step Counting Accuracy: Apple Watch demonstrates high accuracy in tracking heart rate and step count, with mean absolute percentage errors of 4.43% and 8.17%, respectively.
• Calorie Tracking Accuracy: Apple Watch’s calorie tracking accuracy is questionable, with significant discrepancies compared to clinical reference tools.
• Study Methodology: The findings are based on a meta-analysis of 56 studies comparing Apple Watch measurements to gold-standard clinical methods.
• Calorie Burn Estimation Accuracy: Apple Watch showed a mean error rate of 27.96% in calorie burn estimation, which is considered inaccurate.
• Wearable Device Limitations: Wearable devices should be viewed as motivational tools and habit trackers rather than diagnostic devices.
• Apple Watch Improvement: Newer Apple Watch models showed improved accuracy compared to earlier generations.
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