In a society that is increasingly concerned about healthy lifestyles and fitness, the Fitbit is a widely popular form of wearable technology. The Fitbit company claims to encourage users to meet their daily exercise goals and to make fitness a regular part of their lifestyles by allowing users to track their progress. A Fitbit is a small device that can be worn around the wrist or attached to clothing that tracks a user's activity, exercise, food, weight, and sleep. It syncs the statistics wirelessly and automatically from a person's Fitbit device to his or her phone or computer. This allows a user to track his or her progress online through charts and graphs.
The web-based profile allows a user to create an account with his or her height, age, gender, weight, and it also allows a user to log meals online. Users can set short term goals (like steps per day) or long term goals (like weight loss) and track their progress. They can also connect with social media to motivate other users as well.
Fitbit uses a three-dimensional accelerometer system to gather data that tracks motion and the intensity of that motion. Next, the Fitbit software uses algorithms to convert the accelerometer data into usable information. The company has refined these algorithms by experimenting and comparing Fitbit's accuracy with other fitness trackers. The accelerometer tracks energy expenditure and motion, and the algorithms convert this data into information on number of calories burned, steps taken and distance moved. To track sleep, the Fitbit gathers data on how much a user moves at night and then uses algorithms to convert this data to time and quality of sleep. Every time a user passes within fifteen feet of his or her wireless base station, the Fitbit will sync the data from the device onto the online profile.
There have been many studies testing how accurate the Fitbit is at measuring activity. Overall, Fitbit is fairly accurate: more accurate at measuring steps and distance, but a little less reliable for counting calories.
References:
Content:
http://electronics.howstuffworks.com/gadgets/fitness/fitbit2.htm
https://www.fitbit.com/fitscience
https://techcrunch.com/2011/10/03/the-fitbit-ultra-more-fitbit-goodness-same-fitbit-package/
http://berkeleysciencereview.com/fit-fitbit/
Images:
http://az616578.vo.msecnd.net/files/2016/05/28/636000086421781248-470868957_fitbit-banner-mobile.jpg
https://static0.fitbit.com/simple.b-cssdisabled-png.hd53c63eab7cc1316845e4b4084fbc504.pack?items=%2Fcontent%2Fassets%2Fcharge%2Fimages%2Fapp-dashboard%2Fscreen%2Fweb_Next_Gen_Dash%402x.png
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