@article{ref1,
title="Validity of accelerometry to measure physical activity intensity in children with an acquired brain injury",
journal="Pediatric physical therapy",
year="2017",
author="Baque, Emmah and Sakzewski, Leanne and Trost, Stewart G. and Boyd, Roslyn N. and Barber, Lee",
volume="29",
number="4",
pages="322-329",
abstract="PURPOSE: To evaluate the validity of the ActiGraph accelerometer (AG) to differentiate between standardized, physical activity tasks using oxygen consumption ((Equation is included in full-text article.)O2) as the criterion measure in children and adolescents with an acquired brain injury; to determine vector magnitude activity intensity cut-points; to compare performance of cut-points to previously published cut-points. <br><br>METHODS: Twenty-seven children performed standardized walking and stepping activities wearing a portable indirect calorimeter, AG, and heart rate monitor. Differences in (Equation is included in full-text article.)O2 and AG vector magnitude activity counts were measured during activities. Receiver operating characteristic curves were determined for intensity cut-points. <br><br>RESULTS: (Equation is included in full-text article.)O2 and AG activity counts significantly increased as walking speed increased. Discrimination of the newly derived cut-points was excellent and demonstrated greater agreement compared with the previously published cut-points. <br><br>CONCLUSION: Output from accelerometers can differentiate physical activity intensity in children with an acquired brain injury. Future studies can apply these cut-points to evaluate physical activity performance.<p /> <p>Language: en</p>",
language="en",
issn="0898-5669",
doi="10.1097/PEP.0000000000000439",
url="http://dx.doi.org/10.1097/PEP.0000000000000439"
}