![Data scientist Rachel Kalmar is pictured wearing multiple wearable technology devices in Washington, D.C., on March 18, 2015. Kalmar wears a range of devices including the Nike FuelBand, Fitbit, Basis, Pebble, Jawbone Data scientist Rachel Kalmar is pictured wearing multiple wearable technology devices in Washington, D.C., on March 18, 2015. Kalmar wears a range of devices including the Nike FuelBand, Fitbit, Basis, Pebble, Jawbone](https://c8.alamy.com/comp/2EX28DE/data-scientist-rachel-kalmar-is-pictured-wearing-multiple-wearable-technology-devices-in-washington-dc-on-march-18-2015-kalmar-wears-a-range-of-devices-including-the-nike-fuelband-fitbit-basis-pebble-jawbone-and-misfit-shine-among-many-others-as-part-of-an-experiment-to-create-as-much-data-about-herself-as-possible-photo-credit-kristoffer-tripplaar-sipa-usa-please-use-credit-from-credit-field-2EX28DE.jpg)
Data scientist Rachel Kalmar is pictured wearing multiple wearable technology devices in Washington, D.C., on March 18, 2015. Kalmar wears a range of devices including the Nike FuelBand, Fitbit, Basis, Pebble, Jawbone
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PDF) Validity and reliability of Nike + Fuelband for estimating physical activity energy expenditure
![Amazon.com : Nike+ FuelBand White Ice Medium/Large : Nike Fuelband White Ice Small : Sports & Outdoors Amazon.com : Nike+ FuelBand White Ice Medium/Large : Nike Fuelband White Ice Small : Sports & Outdoors](https://m.media-amazon.com/images/I/41AAXk+LQXL._AC_SY350_.jpg)
Amazon.com : Nike+ FuelBand White Ice Medium/Large : Nike Fuelband White Ice Small : Sports & Outdoors
![Data scientist Rachel Kalmar is pictured wearing multiple wearable technology devices in Washington, D.C., on March 18, 2015. Kalmar wears a range of devices including the Nike FuelBand, Fitbit, Basis, Pebble, Jawbone Data scientist Rachel Kalmar is pictured wearing multiple wearable technology devices in Washington, D.C., on March 18, 2015. Kalmar wears a range of devices including the Nike FuelBand, Fitbit, Basis, Pebble, Jawbone](https://l450v.alamy.com/450v/2ex28dm/data-scientist-rachel-kalmar-is-pictured-wearing-multiple-wearable-technology-devices-in-washington-dc-on-march-18-2015-kalmar-wears-a-range-of-devices-including-the-nike-fuelband-fitbit-basis-pebble-jawbone-and-misfit-shine-among-many-others-as-part-of-an-experiment-to-create-as-much-data-about-herself-as-possible-photo-credit-kristoffer-tripplaar-sipa-usa-please-use-credit-from-credit-field-2ex28dm.jpg)