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Accuracy of the Fitbit Zip for Measuring Steps for Adolescents With Visual Impairments.
- Source :
-
Adapted Physical Activity Quarterly . Apr2017, Vol. 34 Issue 2, p195-200. 6p. 2 Charts. - Publication Year :
- 2017
-
Abstract
- Our purpose in this study was to document the criterion validity of the Fitbit Zip for measuring steps taken by youth with visual impairments (VI). A secondary purpose was to determine whether walking pace, mounting position, or relative position to the user's mobility device impacted the criterion validity of the device. Fourteen adolescent-aged individuals (Mage = 15.4; 13 male and 1 female) with VI participated in this study. Participants wore four Fitbit Zips at different mounting positions and completed two, 2-min walking trials while the lead investigator hand tallied steps. Measurement validity was analyzed using absolute percent error (APE), intraclass correlation coefficients estimated level of conformity, and paired samples t tests and Cohen's d effect sizes assessed APE relative to mounting positions. Results supported the use of the Fitbit Zip during regular-paced walking; however, caution must be used during activities exceeding regular walking speeds, as devices consistently underestimated steps. [ABSTRACT FROM AUTHOR]
- Subjects :
- *ACCELEROMETERS
*CONFIDENCE intervals
*DIAGNOSIS
*GAIT in humans
*RESEARCH methodology
*STAFFS (Sticks, canes, etc.)
*T-test (Statistics)
*VISION disorders
*JUDGMENT sampling
*EFFECT sizes (Statistics)
*MEDICAL equipment reliability
*DESCRIPTIVE statistics
*INTRACLASS correlation
*ADOLESCENCE
RESEARCH evaluation
Subjects
Details
- Language :
- English
- ISSN :
- 07365829
- Volume :
- 34
- Issue :
- 2
- Database :
- Academic Search Index
- Journal :
- Adapted Physical Activity Quarterly
- Publication Type :
- Academic Journal
- Accession number :
- 123551711
- Full Text :
- https://doi.org/10.1123/apaq.2016-0055