AI Article Synopsis
- The study aimed to evaluate the validity of the Fitbit Inspire 3 for tracking daily steps in adults with transtibial amputation, using activPAL 3 accelerometers as a benchmark.
- 79 participants wore both devices for a week, revealing that the Fitbit averaged significantly higher daily step counts (5,768) compared to the activPAL (4,674), despite a high correlation (0.93) between the two.
- The findings indicate that while the two devices both track physical activity effectively, they are not interchangeable due to significant differences in step counts, though they may rank individuals similarly based on their results.
Article Abstract
Introduction: Physical activity has significant positive effects on health. Accelerometers can be used to track daily physical activity. The Fitbit Inspire 3 is a commercially available health and fitness tracker, but its validity for tracking steps among individuals with transtibial amputation has not been examined. Therefore, the purpose of this study was to evaluate the concurrent validity of the Fitbit Inspire 3 for assessing free-living daily steps in adults with transtibial amputation.
Methods: Participants ( = 79) completed a general health survey and were provided with a Fitbit Inspire 3 and activPAL 3 accelerometer to wear concurrently for seven days in their home environment. Relationships between the activPAL and Fitbit Inspire 3 were examined using Pearson's Correlation. Paired samples t-tests, mean difference, mean absolute difference, and equivalence testing were used to compared daily step counts between Fitbit Inspire 3 and activPAL 3.
Results: Average step counts were 5,768 ± 3,750 (mean ± SD) and 4,674 ± 3,081 by the Fitbit Inspire 3 and activPAL, respectively. A high correlation (= 0.93) but significant mean difference was found between the activPAL 3 and Fitbit Inspire 3 ( < 0.001). The mean absolute difference between the devices was 1,347 ± 1,184 steps. On average, the Fitbit Inspire 3 counted 1,094 ± 1,423 more daily steps than the activPAL 3. Equivalency could not be claimed between the devices.
Discussion: The Fitbit Inspire 3 counted more steps compared to the activPAL. Because of the significant mean differences and the large mean absolute difference between the devices, the activPAL 3 and Fitbit Inspire 3 are not interchangeable for estimating physical activity in individuals with transtibial amputation. However, due to the high correlation, the devices will produce similar classification rankings based on step counts.
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Source |
|---|---|
| http://www.ncbi.nlm.nih.gov/pmc/articles/PMC10879581 | PMC |
| http://dx.doi.org/10.3389/fresc.2024.1331005 | DOI Listing |
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