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Accuracy of Fitbit Wristbands in Measuring Sleep Stage Transitions and the Effect of User-Specific Factors.

Liang Z, Chapa-Martell MA.

JMIR Mhealth Uhealth. 2019 Jun 6;7(6):e13384. doi: 10.2196/13384.


A validation study of Fitbit Charge 2™ compared with polysomnography in adults.

de Zambotti M, Goldstone A, Claudatos S, Colrain IM, Baker FC.

Chronobiol Int. 2018 Apr;35(4):465-476. doi: 10.1080/07420528.2017.1413578. Epub 2017 Dec 13.


Validity Evaluation of the Fitbit Charge2 and the Garmin vivosmart HR+ in Free-Living Environments in an Older Adult Cohort.

Tedesco S, Sica M, Ancillao A, Timmons S, Barton J, O'Flynn B.

JMIR Mhealth Uhealth. 2019 Jun 19;7(6):e13084. doi: 10.2196/13084.


Comparison of a Commercial Accelerometer with Polysomnography and Actigraphy in Children and Adolescents.

Meltzer LJ, Hiruma LS, Avis K, Montgomery-Downs H, Valentin J.

Sleep. 2015 Aug 1;38(8):1323-30. doi: 10.5665/sleep.4918.


Preliminary Agreement on Tracking Sleep Between a Wrist-Worn Device Fitbit Alta and Consensus Sleep Diary.

Liu J, Wong WT, Zwetsloot IM, Hsu YC, Tsui KL.

Telemed J E Health. 2019 Jan 2. doi: 10.1089/tmj.2018.0202. [Epub ahead of print]


Accuracy of Fitbit Devices: Systematic Review and Narrative Syntheses of Quantitative Data.

Feehan LM, Geldman J, Sayre EC, Park C, Ezzat AM, Yoo JY, Hamilton CB, Li LC.

JMIR Mhealth Uhealth. 2018 Aug 9;6(8):e10527. doi: 10.2196/10527. Review.


Fitbit Charge HR Wireless Heart Rate Monitor: Validation Study Conducted Under Free-Living Conditions.

Gorny AW, Liew SJ, Tan CS, Müller-Riemenschneider F.

JMIR Mhealth Uhealth. 2017 Oct 20;5(10):e157. doi: 10.2196/mhealth.8233.


Movement toward a novel activity monitoring device.

Montgomery-Downs HE, Insana SP, Bond JA.

Sleep Breath. 2012 Sep;16(3):913-7. doi: 10.1007/s11325-011-0585-y. Epub 2011 Oct 6.


Comparison of the Fitbit® Charge and polysomnography for measuring sleep quality in children with sleep disordered breathing.

Hakim M, Miller R, Hakim M, Tumin D, Tobias JD, Jatana KR, Raman VT.

Minerva Pediatr. 2018 Nov 7. doi: 10.23736/S0026-4946.18.05333-1. [Epub ahead of print]


Comparison of Wearable Activity Tracker with Actigraphy for Sleep Evaluation and Circadian Rest-Activity Rhythm Measurement in Healthy Young Adults.

Lee HA, Lee HJ, Moon JH, Lee T, Kim MG, In H, Cho CH, Kim L.

Psychiatry Investig. 2017 Mar;14(2):179-185. doi: 10.4306/pi.2017.14.2.179. Epub 2017 Mar 6.


Accuracy of PurePulse photoplethysmography technology of Fitbit Charge 2 for assessment of heart rate during sleep.

Haghayegh S, Khoshnevis S, Smolensky MH, Diller KR.

Chronobiol Int. 2019 Jul;36(7):927-933. doi: 10.1080/07420528.2019.1596947. Epub 2019 Apr 16.


Validation of a physical activity accelerometer device worn on the hip and wrist against polysomnography.

Full KM, Kerr J, Grandner MA, Malhotra A, Moran K, Godoble S, Natarajan L, Soler X.

Sleep Health. 2018 Apr;4(2):209-216. doi: 10.1016/j.sleh.2017.12.007. Epub 2018 Jan 17.


Systematic review of the validity and reliability of consumer-wearable activity trackers.

Evenson KR, Goto MM, Furberg RD.

Int J Behav Nutr Phys Act. 2015 Dec 18;12:159. doi: 10.1186/s12966-015-0314-1. Review.


Estimating Physical Activity and Sedentary Behavior in a Free-Living Context: A Pragmatic Comparison of Consumer-Based Activity Trackers and ActiGraph Accelerometry.

Gomersall SR, Ng N, Burton NW, Pavey TG, Gilson ND, Brown WJ.

J Med Internet Res. 2016 Sep 7;18(9):e239. doi: 10.2196/jmir.5531.


Validation of a Self-Monitoring Tool for Use in Exercise Therapy.

Powierza CS, Clark MD, Hughes JM, Carneiro KA, Mihalik JP.

PM R. 2017 Nov;9(11):1077-1084. doi: 10.1016/j.pmrj.2017.03.012. Epub 2017 Apr 9.


Obstructive sleep apnea alters sleep stage transition dynamics.

Bianchi MT, Cash SS, Mietus J, Peng CK, Thomas R.

PLoS One. 2010 Jun 28;5(6):e11356. doi: 10.1371/journal.pone.0011356.


The validity of consumer-level, activity monitors in healthy adults worn in free-living conditions: a cross-sectional study.

Ferguson T, Rowlands AV, Olds T, Maher C.

Int J Behav Nutr Phys Act. 2015 Mar 27;12:42. doi: 10.1186/s12966-015-0201-9.


Accuracy of Wrist-Worn Activity Monitors During Common Daily Physical Activities and Types of Structured Exercise: Evaluation Study.

Reddy RK, Pooni R, Zaharieva DP, Senf B, El Youssef J, Dassau E, Doyle Iii FJ, Clements MA, Rickels MR, Patton SR, Castle JR, Riddell MC, Jacobs PG.

JMIR Mhealth Uhealth. 2018 Dec 10;6(12):e10338. doi: 10.2196/10338.


Utility of sleep stage transitions in assessing sleep continuity.

Laffan A, Caffo B, Swihart BJ, Punjabi NM.

Sleep. 2010 Dec;33(12):1681-6.

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