Predictive validity and classification accuracy of actigraph energy expenditure equations and cut-points in young children

Xanne Janssen, Dylan P Cliff, John J Reilly, Trina Hinkley, Rachel A Jones, Marijka Batterham, Ulf Ekelund, Søren Brage, Anthony D Okely

Research output: Contribution to journalArticle

68 Citations (Scopus)

Abstract

Objectives: Evaluate the predictive validity of ActiGraph energy expenditure equations and the classification accuracy of physical activity intensity cut-points in preschoolers.
Methods: Forty children aged 4–6 years (5.3±1.0 years) completed a ~150-min room calorimeter protocol involving age-appropriate sedentary, light and moderate-to vigorous-intensity physical activities. Children wore an ActiGraph GT3X on the right mid-axillary line of the hip. Energy expenditure measured by room calorimetry and physical activity intensity classified using direct observation were the criterion methods. Energy expenditure was predicted using Pate and Puyau equations. Physical activity intensity was classified using Evenson, Sirard, Van Cauwenberghe, Pate, Puyau, and Reilly, ActiGraph cut-points.
Results: The Pate equation significantly overestimated VO2 during sedentary behaviors, light physical activities and total VO2 (P<0.001). No difference was found between measured and predicted VO2 during moderate-to vigorous-intensity physical activities (P = 0.072). The Puyau equation significantly underestimated activity energy expenditure during moderate-to vigorous-intensity physical activities, light-intensity physical activities and total activity energy expenditure (P<0.0125). However, no overestimation of activity energy expenditure during sedentary behavior was found. The Evenson cut-point demonstrated significantly higher accuracy for classifying sedentary behaviors and light-intensity physical activities than others. Classification accuracy for moderate-to vigorous-intensity physical activities was significantly higher for Pate than others.
Conclusion: Available ActiGraph equations do not provide accurate estimates of energy expenditure across physical activity intensities in preschoolers. Cut-points of ≤25counts⋅15 s−1 and ≥420 counts⋅15 s−1 for classifying sedentary behaviors and moderate-to vigorous-intensity physical activities, respectively, are recommended.
LanguageEnglish
Article numbere79124
Number of pages9
JournalPLOS One
Volume8
Issue number11
DOIs
Publication statusPublished - 11 Nov 2013

Fingerprint

actigraphy
energy expenditure
physical activity
Energy Metabolism
Exercise
Light
preschool children
Calorimetry
light intensity
Calorimeters
Wear of materials
calorimeters
calorimetry
hips

Keywords

  • predictive
  • validity and classification
  • accuracy
  • cut-points
  • young children
  • actigraph
  • energy expenditure
  • equations

Cite this

Janssen, Xanne ; Cliff, Dylan P ; Reilly, John J ; Hinkley, Trina ; Jones, Rachel A ; Batterham, Marijka ; Ekelund, Ulf ; Brage, Søren ; Okely, Anthony D. / Predictive validity and classification accuracy of actigraph energy expenditure equations and cut-points in young children. In: PLOS One. 2013 ; Vol. 8, No. 11.
@article{3c04d7d97f554b7d9971a39a0b8ee15a,
title = "Predictive validity and classification accuracy of actigraph energy expenditure equations and cut-points in young children",
abstract = "Objectives: Evaluate the predictive validity of ActiGraph energy expenditure equations and the classification accuracy of physical activity intensity cut-points in preschoolers.Methods: Forty children aged 4–6 years (5.3±1.0 years) completed a ~150-min room calorimeter protocol involving age-appropriate sedentary, light and moderate-to vigorous-intensity physical activities. Children wore an ActiGraph GT3X on the right mid-axillary line of the hip. Energy expenditure measured by room calorimetry and physical activity intensity classified using direct observation were the criterion methods. Energy expenditure was predicted using Pate and Puyau equations. Physical activity intensity was classified using Evenson, Sirard, Van Cauwenberghe, Pate, Puyau, and Reilly, ActiGraph cut-points.Results: The Pate equation significantly overestimated VO2 during sedentary behaviors, light physical activities and total VO2 (P<0.001). No difference was found between measured and predicted VO2 during moderate-to vigorous-intensity physical activities (P = 0.072). The Puyau equation significantly underestimated activity energy expenditure during moderate-to vigorous-intensity physical activities, light-intensity physical activities and total activity energy expenditure (P<0.0125). However, no overestimation of activity energy expenditure during sedentary behavior was found. The Evenson cut-point demonstrated significantly higher accuracy for classifying sedentary behaviors and light-intensity physical activities than others. Classification accuracy for moderate-to vigorous-intensity physical activities was significantly higher for Pate than others.Conclusion: Available ActiGraph equations do not provide accurate estimates of energy expenditure across physical activity intensities in preschoolers. Cut-points of ≤25counts⋅15 s−1 and ≥420 counts⋅15 s−1 for classifying sedentary behaviors and moderate-to vigorous-intensity physical activities, respectively, are recommended.",
keywords = "predictive , validity and classification, accuracy, cut-points, young children, actigraph, energy expenditure, equations",
author = "Xanne Janssen and Cliff, {Dylan P} and Reilly, {John J} and Trina Hinkley and Jones, {Rachel A} and Marijka Batterham and Ulf Ekelund and S{\o}ren Brage and Okely, {Anthony D}",
year = "2013",
month = "11",
day = "11",
doi = "10.1371/journal.pone.0079124",
language = "English",
volume = "8",
journal = "PLOS One",
issn = "1932-6203",
publisher = "Public Library of Science",
number = "11",

}

Predictive validity and classification accuracy of actigraph energy expenditure equations and cut-points in young children. / Janssen, Xanne; Cliff, Dylan P; Reilly, John J; Hinkley, Trina; Jones, Rachel A; Batterham, Marijka; Ekelund, Ulf; Brage, Søren; Okely, Anthony D.

In: PLOS One, Vol. 8, No. 11, e79124, 11.11.2013.

Research output: Contribution to journalArticle

TY - JOUR

T1 - Predictive validity and classification accuracy of actigraph energy expenditure equations and cut-points in young children

AU - Janssen, Xanne

AU - Cliff, Dylan P

AU - Reilly, John J

AU - Hinkley, Trina

AU - Jones, Rachel A

AU - Batterham, Marijka

AU - Ekelund, Ulf

AU - Brage, Søren

AU - Okely, Anthony D

PY - 2013/11/11

Y1 - 2013/11/11

N2 - Objectives: Evaluate the predictive validity of ActiGraph energy expenditure equations and the classification accuracy of physical activity intensity cut-points in preschoolers.Methods: Forty children aged 4–6 years (5.3±1.0 years) completed a ~150-min room calorimeter protocol involving age-appropriate sedentary, light and moderate-to vigorous-intensity physical activities. Children wore an ActiGraph GT3X on the right mid-axillary line of the hip. Energy expenditure measured by room calorimetry and physical activity intensity classified using direct observation were the criterion methods. Energy expenditure was predicted using Pate and Puyau equations. Physical activity intensity was classified using Evenson, Sirard, Van Cauwenberghe, Pate, Puyau, and Reilly, ActiGraph cut-points.Results: The Pate equation significantly overestimated VO2 during sedentary behaviors, light physical activities and total VO2 (P<0.001). No difference was found between measured and predicted VO2 during moderate-to vigorous-intensity physical activities (P = 0.072). The Puyau equation significantly underestimated activity energy expenditure during moderate-to vigorous-intensity physical activities, light-intensity physical activities and total activity energy expenditure (P<0.0125). However, no overestimation of activity energy expenditure during sedentary behavior was found. The Evenson cut-point demonstrated significantly higher accuracy for classifying sedentary behaviors and light-intensity physical activities than others. Classification accuracy for moderate-to vigorous-intensity physical activities was significantly higher for Pate than others.Conclusion: Available ActiGraph equations do not provide accurate estimates of energy expenditure across physical activity intensities in preschoolers. Cut-points of ≤25counts⋅15 s−1 and ≥420 counts⋅15 s−1 for classifying sedentary behaviors and moderate-to vigorous-intensity physical activities, respectively, are recommended.

AB - Objectives: Evaluate the predictive validity of ActiGraph energy expenditure equations and the classification accuracy of physical activity intensity cut-points in preschoolers.Methods: Forty children aged 4–6 years (5.3±1.0 years) completed a ~150-min room calorimeter protocol involving age-appropriate sedentary, light and moderate-to vigorous-intensity physical activities. Children wore an ActiGraph GT3X on the right mid-axillary line of the hip. Energy expenditure measured by room calorimetry and physical activity intensity classified using direct observation were the criterion methods. Energy expenditure was predicted using Pate and Puyau equations. Physical activity intensity was classified using Evenson, Sirard, Van Cauwenberghe, Pate, Puyau, and Reilly, ActiGraph cut-points.Results: The Pate equation significantly overestimated VO2 during sedentary behaviors, light physical activities and total VO2 (P<0.001). No difference was found between measured and predicted VO2 during moderate-to vigorous-intensity physical activities (P = 0.072). The Puyau equation significantly underestimated activity energy expenditure during moderate-to vigorous-intensity physical activities, light-intensity physical activities and total activity energy expenditure (P<0.0125). However, no overestimation of activity energy expenditure during sedentary behavior was found. The Evenson cut-point demonstrated significantly higher accuracy for classifying sedentary behaviors and light-intensity physical activities than others. Classification accuracy for moderate-to vigorous-intensity physical activities was significantly higher for Pate than others.Conclusion: Available ActiGraph equations do not provide accurate estimates of energy expenditure across physical activity intensities in preschoolers. Cut-points of ≤25counts⋅15 s−1 and ≥420 counts⋅15 s−1 for classifying sedentary behaviors and moderate-to vigorous-intensity physical activities, respectively, are recommended.

KW - predictive

KW - validity and classification

KW - accuracy

KW - cut-points

KW - young children

KW - actigraph

KW - energy expenditure

KW - equations

UR - http://www.plosone.org/

U2 - 10.1371/journal.pone.0079124

DO - 10.1371/journal.pone.0079124

M3 - Article

VL - 8

JO - PLOS One

T2 - PLOS One

JF - PLOS One

SN - 1932-6203

IS - 11

M1 - e79124

ER -