Validation of the Actical Accelerometer in Multiethnic Preschoolers: The Children's Healthy Living (CHL) Program.
This study aimed to determine the validity and reliability of the Actical accelerometer for measuring physical activity (PA) in preschool children of mixed ethnicity, compared with direct observation via a modified System for Observing Fitness Instruction Time (SOFIT) protocol and proxy parental reports (PA Logs). Fifty children in Hawai'i wore wrist-mounted accelerometers for two 7-day periods with a washout period between each week. Thirty children were concurrently observed using SOFIT. Parents completed PA Logs for three days. Reliability and validity were measured by intra-class correlation coefficient and proportions of agreement concurrently. There was slight agreement (proportion of agreement: 82%; weighted Kappa=.17, P <.001) between the accelerometer and SOFIT as well as between the accelerometer and the PA Logs (proportions of agreement: 40%; weighted Kappa=0.15, P <.001). PA logs underestimated the PA levels of the children, while the Actical was found to be valid and reliable for estimating PA levels of multiethnic, mixed ethnicity preschoolers. These findings suggest that accelerometers can be objective, valid, and accurate physical activity assessment tools compared to conventional PA logs and subjective reports of activity for preschool children of mixed ethnicity.
University of Hawai'i at Manoa, Department of Human Nutrition, Food, and Animal Sciences, Honolulu, HI (RE, FL, YS, KM, AT, CC, JM, RN).
Reynolette
R
Ettienne
University of Hawai'i at Manoa, Department of Human Nutrition, Food, and Animal Sciences, Honolulu, HI (RE, FL, YS, KM, AT, CC, JM, RN).
Claudio R
CR
Nigg
University of Hawai'i at Manoa, Department of Human Nutrition, Food, and Animal Sciences, Honolulu, HI (RE, FL, YS, KM, AT, CC, JM, RN).
Fenfang
F
Li
University of Hawai'i at Manoa, Department of Human Nutrition, Food, and Animal Sciences, Honolulu, HI (RE, FL, YS, KM, AT, CC, JM, RN).
Yuhua
Y
Su
University of Hawai'i at Manoa, Department of Human Nutrition, Food, and Animal Sciences, Honolulu, HI (RE, FL, YS, KM, AT, CC, JM, RN).
Katalina
K
McGlone
University of Hawai'i at Manoa, Department of Human Nutrition, Food, and Animal Sciences, Honolulu, HI (RE, FL, YS, KM, AT, CC, JM, RN).
Bret
B
Luick
University of Hawai'i at Manoa, Department of Human Nutrition, Food, and Animal Sciences, Honolulu, HI (RE, FL, YS, KM, AT, CC, JM, RN).
Alvin
A
Tachibana
University of Hawai'i at Manoa, Department of Human Nutrition, Food, and Animal Sciences, Honolulu, HI (RE, FL, YS, KM, AT, CC, JM, RN).
Christina
C
Carran
University of Hawai'i at Manoa, Department of Human Nutrition, Food, and Animal Sciences, Honolulu, HI (RE, FL, YS, KM, AT, CC, JM, RN).
Jobel
J
Mercado
University of Hawai'i at Manoa, Department of Human Nutrition, Food, and Animal Sciences, Honolulu, HI (RE, FL, YS, KM, AT, CC, JM, RN).
Rachel
R
Novotny
D056044:Actigraphy / Q000592:standards*; D002652:Child Behavior / Q000208:ethnology / Q000502:physiology*; D002675:Child, Preschool; D018479:Early Intervention, Educational; D015444:Exercise / Q000502:physiology*; D005260:Female; D006254:Hawaii / Q000208:ethnology; D006801:Humans; D008297:Male; D015203:Reproducibility of Results
Hawai‘i; accelerometry; mixed ethnicity; physical activity; preschool children