Measurement of walking activity throughout childhood: influence of leg length.
The aim of this study was to describe walking (stride) activity frequency and intensity in 428 children ages 2-15 years with a single accelerometer-based device. With comparison with published pedometer-determined data, the influence of leg length was examined. Decline in stride frequency and intensity throughout childhood increased with adjustment for leg length. The accelerometer-based device documented higher stride counts than published pedometer-based data with the greatest discrepancy in 4-5 year olds. Recommended walking levels for optimal weight throughout childhood should be examined with knowledge of the device measurement differences and the natural history of walking activity changes with age.
Seattle Children's Research Institute, Seattle, WA, USA.
Kristie
K
Bjornson
Kit
K
Song
Jennifer
J
Lisle
Sarah
S
Robinson
Elizabeth
E
Killien
Terry
T
Barrett
Chuan
C
Zhou
D000054:Acceleration; D000293:Adolescent; D000367:Age Factors; D000886:Anthropometry; D002657:Child Development / Q000502:physiology*; D002675:Child, Preschool; D005260:Female; D006801:Humans; D007866:Leg / Q000033:anatomy & histology*; D008297:Male; D018670:Monitoring, Ambulatory; D012044:Regression Analysis; D016138:Walking / Q000502:physiology*