Description

A 2-regression method is presented in which the counts/15-s and coefficient of variation of hip-worn Actical counts/15-s are used to determine METs. This approach was developed in adults performing structured activities over a range of intensities and cross-validated in an independent sample of adults in free-living. Bias was 8.78 (sedentary), 0.8 (light), and -9.6 (moderate-to-vigorous) minutes over the six-hour free-living observation period.

Development/Validation

Sample: 48 (24 males) healthy adults, 35.0±11.4 years of age

Setting: Laboratory, university, or home

Activities: Activities of daily living, overground walking and running, sports, stairs, stationary

Criterion: Cosmed K4b2 (VO₂)

Accelerometer(s): Actical on left hip

Validation approach: Independent sample cross-validation with 29 participants (12 males, 20-55 years of age) in free-living

Phase Designation

(What's this?)

This model is in Phase 2 and 4.

Source Information

Reference:

Crouter, S. E., DellaValle, D. M., Horton, M., Haas, J. D., Frongillo, E. A., & Bassett, D. R. (2011). Validity of the Actical for estimating free-living physical activity. European Journal of Applied Physiology, 111(7), 1381-1389. https://doi.org/10.1007/s00421-010-1758-2 Link to Paper

Corresponding author: Scott Crouter, Scott.crouter@umb.edu

Contact

Kimberly Clevenger at accelerometerrepository@gmail.com