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Provides functions to calculate step- and cadence-based metrics from timestamped accelerometer and wearable device data. Supports CSV and AGD files from 'ActiGraph' devices, CSV files from 'Fitbit' devices, and step counts derived with R package 'GGIR' <https://github.com/wadpac/GGIR>, with automatic handling of epoch lengths from 1 to 60 seconds. Metrics include total steps, cadence peaks, minutes and steps in predefined cadence bands, and time and steps in moderate-to-vigorous physical activity (MVPA). Methods and thresholds are informed by the literature, e.g., Tudor-Locke and Rowe (2012) <doi:10.2165/11599170-000000000-00000>, Barreira et al. (2012) <doi:10.1249/MSS.0b013e318254f2a3>, and Tudor-Locke et al. (2018) <doi:10.1136/bjsports-2017-097628>. The package record is also available on Zenodo (2023) <doi:10.5281/zenodo.7858094>.
| Version: | 1.0.1 |
| Depends: | R (≥ 3.5.0) |
| Imports: | PhysicalActivity, tools, stats, utils |
| Suggests: | testthat (≥ 3.0.0), RSQLite, spelling |
| Published: | 2025-09-16 |
| DOI: | 10.32614/CRAN.package.stepmetrics |
| Author: | Jairo H Migueles [aut, cre], Elroy J Aguiar [fnd] (Funding and data support), University of Alabama [fnd] |
| Maintainer: | Jairo H Migueles <jairo at jhmigueles.com> |
| BugReports: | https://github.com/jhmigueles/stepmetrics/issues |
| License: | AGPL (≥ 3) |
| URL: | https://github.com/jhmigueles/stepmetrics |
| NeedsCompilation: | no |
| Language: | en-US |
| Citation: | stepmetrics citation info |
| Materials: | README, NEWS |
| CRAN checks: | stepmetrics results [issues need fixing before 2025-09-30] |
| Reference manual: | stepmetrics.html , stepmetrics.pdf |
| Package source: | stepmetrics_1.0.1.tar.gz |
| Windows binaries: | r-devel: stepmetrics_1.0.1.zip, r-release: stepmetrics_1.0.1.zip, r-oldrel: stepmetrics_1.0.1.zip |
| macOS binaries: | r-release (arm64): stepmetrics_1.0.1.tgz, r-oldrel (arm64): stepmetrics_1.0.1.tgz, r-release (x86_64): stepmetrics_1.0.1.tgz, r-oldrel (x86_64): stepmetrics_1.0.1.tgz |
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These binaries (installable software) and packages are in development.
They may not be fully stable and should be used with caution. We make no claims about them.