@article{ref1,
title="Reproducibility in measuring physical activity in children and adolescents with an acquired brain injury",
journal="Brain injury",
year="2016",
author="Baque, Emmah and Barber, Lee and Sakzewski, Leanne and Boyd, Roslyn N.",
volume="30",
number="13-14",
pages="1692-1698",
abstract="AIM: To examine the reproducibility in measurement of physical activity performance using the ActiGraph(®) GT3X+ accelerometer in children aged 8-16 years with Acquired Brain Injury (ABI). <br><br>METHODS: Reproducibility of standardized tasks: Thirty-two children with ABI (12 years 1 month, SD = 2 years 4 months; 20 males; Gross Motor Function Classification System I = 17, II = 15) performed the following activities on 2 consecutive days while wearing an accelerometer and a heart rate monitor: quiet sitting, slow walking (SW), moderate walking (MW), fast walking (FW) and rapid stepping on/off a block (STEP). Intra-class correlation coefficients (ICC) were calculated. Performance variability: Fifty-one participants (12 years 1 month, SD = 2 years 5 months; 27 males; GMFCS I = 26, II = 25) wore an accelerometer for 4 days in the community and reliability coefficients were calculated using standardized 12-hour time spent in moderate-to-vigorous physical activity (MVPA). <br><br>RESULTS: Test-re-test reproducibility was excellent for all activities (SW, ICC = 0.90; MW, ICC = 0.83; FW, ICC = 0.91; STEP, ICC = 0.89). Three days of monitoring produced excellent variability estimates of MVPA (R = 0.78). <br><br>CONCLUSION: Therapists can confidently use accelerometry as a reproducible measure of physical activity under standardized walking and stepping conditions, as well as in the community for children with ABI.<p /> <p>Language: en</p>",
language="en",
issn="0269-9052",
doi="10.1080/02699052.2016.1201594",
url="http://dx.doi.org/10.1080/02699052.2016.1201594"
}