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Study finds smartwatches significantly undercount calories, especially for higher body fat

FIU study publishedSmartwatch calorie measurements unreliable, worsen with body fat

1 Sep 21 8:37 AM · 2d ago · 1 article · 1 post · 2 sources · development 1 of 2

Jason Kostrna and colleagues at Florida International University's Medical Photonics Laboratory released findings from a study of 58 participants wearing four popular smartwatch models during controlled cycling sessions. Researchers measured actual energy expenditure using metabolic analysis and compared it to each watch's calorie estimate, finding all four devices demonstrated substantial error that increased with wearers' body fat percentage.

FIU study published: smartwatch calorie measurements unreliable, worsen with body fat
The Conversation US

“Our team found that not only can these devices err substantially in their measurements of calories burned, but those errors also increase as the wearer's body fat percentage rises.”

Jason Kostrna

Jason Kostrna Study lead, exercise scientistFlorida International University Medical Photonics Laboratory Research institution

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1FIU study published: smartwatch calorie…2NPR and major outlets cover study findings
Sep 22yesterdaynow · 1:00 AM ET

What was reported 1 claim about this development

  1. 1 outlet The higher your body fat percentage, the less accurate your smartwatch is at measuring calories you burn when exercising – new study

    first by The Conversation US, 2d ago

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