Key result
Conversion of CSA accelerometer output to average acceleration provided more precise estimates of movement intensity correlated with speed (r2=0.76) and heart rate (r2=0.81) than raw output.
Observational (n=15)
No
Effect estimate: r2 = 0.76 (speed), r2 = 0.81 (heart rate)
Converting CSA accelerometer output to average acceleration provides more precise estimates of movement intensity with less inter-individual variability than raw output in children.
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May improve accuracy of pediatric activity assessment; leaves open clinical translation pending further validation.
Brage et al. (2003) reported an observational. Conversion of CSA output to average acceleration vs. Raw CSA output was evaluated on Correlation with speed and heart rate (r2 = 0.76 (speed), r2 = 0.81 (heart rate)). Conversion of CSA accelerometer output to average acceleration provided more precise estimates of movement intensity correlated with speed (r2=0.76) and heart rate (r2=0.81) than raw output.
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