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consumer-grade actigraph device fitbit charge 4  (ActiGraph llc)

 
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    ActiGraph llc consumer-grade actigraph device fitbit charge 4
    Consumer Grade Actigraph Device Fitbit Charge 4, supplied by ActiGraph llc, used in various techniques. Bioz Stars score: 90/100, based on 1 PubMed citations. ZERO BIAS - scores, article reviews, protocol conditions and more
    https://www.bioz.com/product/fitbit+device/consumer+grade+actigraph+device+fitbit+charge+4/pm40040523-4-7-8
    Average 90 stars, based on 1 article reviews
    consumer-grade actigraph device fitbit charge 4 - by Bioz Stars, 2026-11
    90/100 stars

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    Related Articles

    other:

    Article Title: Validation of the Caen Chronotype Questionnaire: Exploring the added value of amplitude and correlations with actigraphy
    Article Snippet: A subsample of participants also wore a consumer-grade actigraph device (Fitbit Charge 4) for seven days to compare chronotype estimates with objective sleep-wake parameters ( n = 22; mean age 27.05 ± 3.99 years, 81.8% female, 90.9% worked standard daytime schedules, and 9.1% worked rotating shifts).

    Article Title: Validation of the Caen Chronotype Questionnaire: Exploring the added value of amplitude and correlations with actigraphy.
    Article Snippet: A subsample of participants also wore a consumer-grade actigraph device (Fitbit Charge 4) for seven days to compare chronotype estimates with objective sleep-wake parameters (n = 22; mean age 27.05 ± 3.99 years, 81.8% female, 90.9% worked standard daytime schedules, and 9.1% worked rotating shifts).



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    Mean steps per day measured concurrently by Fitbit Inspire 2, Ionic and ActiGraph for adults and older adults. The mean error (ME), mean absolute error (MAE), mean percentage error (MPE) and mean absolute percentage error (MAPE) of Fitbits (with ActiGraph as a reference device) in the mean steps are presented.

    Journal: Digital Health

    Article Title: Fitbit's accuracy to measure short bouts of stepping and sedentary behaviour: validation, sensitivity and specificity study

    doi: 10.1177/20552076241262710

    Figure Lengend Snippet: Mean steps per day measured concurrently by Fitbit Inspire 2, Ionic and ActiGraph for adults and older adults. The mean error (ME), mean absolute error (MAE), mean percentage error (MPE) and mean absolute percentage error (MAPE) of Fitbits (with ActiGraph as a reference device) in the mean steps are presented.

    Article Snippet: Multiple linear regression analyses were used to test the potential effect of the day of measurement and site of participant recruitment (Belgium vs. the Czech Republic) on the minute-level difference in step count between the Fitbit devices and ActiGraph.

    Techniques:

    Mean difference in steps per minute between Fitbit Inspire 2, Ionic and ActiGraph.

    Journal: Digital Health

    Article Title: Fitbit's accuracy to measure short bouts of stepping and sedentary behaviour: validation, sensitivity and specificity study

    doi: 10.1177/20552076241262710

    Figure Lengend Snippet: Mean difference in steps per minute between Fitbit Inspire 2, Ionic and ActiGraph.

    Article Snippet: Multiple linear regression analyses were used to test the potential effect of the day of measurement and site of participant recruitment (Belgium vs. the Czech Republic) on the minute-level difference in step count between the Fitbit devices and ActiGraph.

    Techniques:

    Bland–Altman plots of Fitbit Ionic (on the left) and Inspire 2 (on the right) compared to ActiGraph for adults. The mean difference is shown by the middle line. Positive values indicate an overestimation by Fitbit. The dotted lines represent the limits of agreement.

    Journal: Digital Health

    Article Title: Fitbit's accuracy to measure short bouts of stepping and sedentary behaviour: validation, sensitivity and specificity study

    doi: 10.1177/20552076241262710

    Figure Lengend Snippet: Bland–Altman plots of Fitbit Ionic (on the left) and Inspire 2 (on the right) compared to ActiGraph for adults. The mean difference is shown by the middle line. Positive values indicate an overestimation by Fitbit. The dotted lines represent the limits of agreement.

    Article Snippet: Multiple linear regression analyses were used to test the potential effect of the day of measurement and site of participant recruitment (Belgium vs. the Czech Republic) on the minute-level difference in step count between the Fitbit devices and ActiGraph.

    Techniques:

    Bland–Altman plots of Fitbit Ionic (on the left) and Inspire 2 (on the right) compared to ActiGraph for older adults. The mean difference is shown by the middle line. Positive values indicate an overestimation by Fitbit. The dotted lines represent the limits of agreement.

    Journal: Digital Health

    Article Title: Fitbit's accuracy to measure short bouts of stepping and sedentary behaviour: validation, sensitivity and specificity study

    doi: 10.1177/20552076241262710

    Figure Lengend Snippet: Bland–Altman plots of Fitbit Ionic (on the left) and Inspire 2 (on the right) compared to ActiGraph for older adults. The mean difference is shown by the middle line. Positive values indicate an overestimation by Fitbit. The dotted lines represent the limits of agreement.

    Article Snippet: Multiple linear regression analyses were used to test the potential effect of the day of measurement and site of participant recruitment (Belgium vs. the Czech Republic) on the minute-level difference in step count between the Fitbit devices and ActiGraph.

    Techniques: