TY  - RPRT
TI  - A comparative evaluation of three accelerometry-based physical activity monitors.
AU  - G J Welk
AU  - S N Blair
AU  - K Wood
AU  - S Jones
AU  - R W Thompson
PY  - 2000
DO  - 10.1097/00005768-200009001-00008
UR  - https://pubmed.ncbi.nlm.nih.gov/10993419/
ID  - 10993419
ER  -