R-universe - junruidi (Junrui Di)

ActCR - Extract Circadian Rhythms Metrics from Actigraphy Data

Circadian rhythms are rhythms that oscillate about every 24 h, which has been observed in multiple physiological processes including core body temperature, hormone secretion, heart rate, blood pressure, and many others. Measuring circadian rhythm with wearables is based on a principle that there is increased movement during wake periods and reduced movement during sleep periods, and has been shown to be reliable and valid. This package can be used to extract nonparametric circadian metrics like intradaily variability (IV), interdaily stability (IS), and relative amplitude (RA); and parametric cosinor model and extended cosinor model coefficient. Details can be found in Junrui Di et al (2019) <doi:10.1007/s12561-019-09236-4>.

Last updated

5.89 score 14 stars 4 dependents 17 scripts 1.3k downloads

ActFrag - Activity Fragmentation Metrics Extracted from Minute Level Activity Data

Recent studies haven shown that, on top of total daily active/sedentary volumes, the time accumulation strategies provide more sensitive information. This package provides functions to extract commonly used fragmentation metrics to quantify such time accumulation strategies based on minute level actigraphy-measured activity counts data.

Last updated

4.71 score 2 dependents 17 scripts 264 downloads