Wrist acceleration cut points for moderate-to-vigorous physical activity in youth

Anthony D. Okely, Marijka J. Batterham, Trina Hinkley, Ulf Ekelund, Søren Brage, John J. Reilly, Stewart G. Trost, Rachel A. Jones, Xanne Janssen, Dylan P. Cliff, Christiana Maria Theodora Van Loo

Research output: Contribution to journalArticle

2 Citations (Scopus)

Abstract

Purpose This study aimed to examine the validity of wrist acceleration cut points for classifying moderate (MPA), vigorous (VPA), and moderate-to-vigorous (MVPA) physical activity. Methods Fifty-seven children (5-12 yr) completed 15 semistructured activities. Three sets of wrist cut points (>192 mg, >250 mg, and >314 mg), previously developed using Euclidian norm minus one (ENMO 192+), GENEActiv software (GENEA 250+), and band-pass filter followed by Euclidian norm (BFEN 314+), were evaluated against indirect calorimetry. Analyses included classification accuracy, equivalence testing, and Bland-Altman procedures. Results All cut points classified MPA, VPA, and MVPA with substantial accuracy (ENMO 192+: κ = 0.72 [95% confidence interval = 0.72-0.73], MVPA: area under the receiver operating characteristic curve (ROC-AUC) = 0.85 [0.85-0.86]; GENEA 250+: κ = 0.75 [0.74-0.76], MVPA: ROC-AUC = 0.85 [0.85-0.86]; BFEN 314+: κ = 0.73 [0.72-0.74], MVPA: ROC-AUC = 0.86 [0.86-0.87]). BFEN 314+ misclassified 19.7% non-MVPA epochs as MPA, whereas ENMO 192+ and GENEA 250+ misclassified 32.6% and 26.5% of MPA epochs as non-MVPA, respectively. Group estimates of MPA time were equivalent (P < 0.01) to indirect calorimetry for the BFEN 314+ MPA cut point (mean bias = -1.5%, limits of agreement [LoA] = -57.5% to 60.6%), whereas estimates of MVPA time were equivalent (P < 0.01) to indirect calorimetry for the ENMO 192+ (mean bias = -1.1%, LoA = -53.7% to 55.9%) and GENEA 250+ (mean bias = 2.2%, LoA = -56.5% to 52.2%) cut points. Individual variability (LoA) was large for MPA (min: BFEN 314+, -60.6% to 57.5%; max: GENEA 250+, -42.0% to 104.1%), VPA (min: BFEN 314+, -238.9% to 54.6%; max: ENMO 192+, -244.5% to 127.4%), and MVPA (min: ENMO 192+, -53.7% to 55.0%; max: BFEN 314+, -83.9% to 25.3%). Conclusion Wrist acceleration cut points misclassified a considerable proportion of non-MVPA and MVPA. Group-level estimates of MVPA were acceptable; however, error for individual-level prediction was larger.

LanguageEnglish
Pages609-616
Number of pages8
JournalMedicine and Science in Sports and Exercise
Volume50
Issue number3
DOIs
Publication statusPublished - 1 Mar 2018

Fingerprint

Indirect Calorimetry
Wrist
Area Under Curve
Exercise
ROC Curve
Software
Confidence Intervals

Keywords

  • ActiGraph
  • activity monitor
  • children
  • validation
  • objective measurement
  • GENEActiv

Cite this

Okely, Anthony D. ; Batterham, Marijka J. ; Hinkley, Trina ; Ekelund, Ulf ; Brage, Søren ; Reilly, John J. ; Trost, Stewart G. ; Jones, Rachel A. ; Janssen, Xanne ; Cliff, Dylan P. ; Van Loo, Christiana Maria Theodora. / Wrist acceleration cut points for moderate-to-vigorous physical activity in youth. In: Medicine and Science in Sports and Exercise . 2018 ; Vol. 50, No. 3. pp. 609-616.
@article{7b6b7167d7924576a22b392327ca8994,
title = "Wrist acceleration cut points for moderate-to-vigorous physical activity in youth",
abstract = "Purpose This study aimed to examine the validity of wrist acceleration cut points for classifying moderate (MPA), vigorous (VPA), and moderate-to-vigorous (MVPA) physical activity. Methods Fifty-seven children (5-12 yr) completed 15 semistructured activities. Three sets of wrist cut points (>192 mg, >250 mg, and >314 mg), previously developed using Euclidian norm minus one (ENMO 192+), GENEActiv software (GENEA 250+), and band-pass filter followed by Euclidian norm (BFEN 314+), were evaluated against indirect calorimetry. Analyses included classification accuracy, equivalence testing, and Bland-Altman procedures. Results All cut points classified MPA, VPA, and MVPA with substantial accuracy (ENMO 192+: κ = 0.72 [95{\%} confidence interval = 0.72-0.73], MVPA: area under the receiver operating characteristic curve (ROC-AUC) = 0.85 [0.85-0.86]; GENEA 250+: κ = 0.75 [0.74-0.76], MVPA: ROC-AUC = 0.85 [0.85-0.86]; BFEN 314+: κ = 0.73 [0.72-0.74], MVPA: ROC-AUC = 0.86 [0.86-0.87]). BFEN 314+ misclassified 19.7{\%} non-MVPA epochs as MPA, whereas ENMO 192+ and GENEA 250+ misclassified 32.6{\%} and 26.5{\%} of MPA epochs as non-MVPA, respectively. Group estimates of MPA time were equivalent (P < 0.01) to indirect calorimetry for the BFEN 314+ MPA cut point (mean bias = -1.5{\%}, limits of agreement [LoA] = -57.5{\%} to 60.6{\%}), whereas estimates of MVPA time were equivalent (P < 0.01) to indirect calorimetry for the ENMO 192+ (mean bias = -1.1{\%}, LoA = -53.7{\%} to 55.9{\%}) and GENEA 250+ (mean bias = 2.2{\%}, LoA = -56.5{\%} to 52.2{\%}) cut points. Individual variability (LoA) was large for MPA (min: BFEN 314+, -60.6{\%} to 57.5{\%}; max: GENEA 250+, -42.0{\%} to 104.1{\%}), VPA (min: BFEN 314+, -238.9{\%} to 54.6{\%}; max: ENMO 192+, -244.5{\%} to 127.4{\%}), and MVPA (min: ENMO 192+, -53.7{\%} to 55.0{\%}; max: BFEN 314+, -83.9{\%} to 25.3{\%}). Conclusion Wrist acceleration cut points misclassified a considerable proportion of non-MVPA and MVPA. Group-level estimates of MVPA were acceptable; however, error for individual-level prediction was larger.",
keywords = "ActiGraph, activity monitor, children, validation, objective measurement, GENEActiv",
author = "Okely, {Anthony D.} and Batterham, {Marijka J.} and Trina Hinkley and Ulf Ekelund and S{\o}ren Brage and Reilly, {John J.} and Trost, {Stewart G.} and Jones, {Rachel A.} and Xanne Janssen and Cliff, {Dylan P.} and {Van Loo}, {Christiana Maria Theodora}",
year = "2018",
month = "3",
day = "1",
doi = "10.1249/MSS.0000000000001449",
language = "English",
volume = "50",
pages = "609--616",
journal = "Medicine and Science in Sports and Exercise",
issn = "0195-9131",
number = "3",

}

Okely, AD, Batterham, MJ, Hinkley, T, Ekelund, U, Brage, S, Reilly, JJ, Trost, SG, Jones, RA, Janssen, X, Cliff, DP & Van Loo, CMT 2018, 'Wrist acceleration cut points for moderate-to-vigorous physical activity in youth' Medicine and Science in Sports and Exercise , vol. 50, no. 3, pp. 609-616. https://doi.org/10.1249/MSS.0000000000001449

Wrist acceleration cut points for moderate-to-vigorous physical activity in youth. / Okely, Anthony D.; Batterham, Marijka J.; Hinkley, Trina; Ekelund, Ulf; Brage, Søren; Reilly, John J.; Trost, Stewart G.; Jones, Rachel A.; Janssen, Xanne; Cliff, Dylan P.; Van Loo, Christiana Maria Theodora.

In: Medicine and Science in Sports and Exercise , Vol. 50, No. 3, 01.03.2018, p. 609-616.

Research output: Contribution to journalArticle

TY - JOUR

T1 - Wrist acceleration cut points for moderate-to-vigorous physical activity in youth

AU - Okely, Anthony D.

AU - Batterham, Marijka J.

AU - Hinkley, Trina

AU - Ekelund, Ulf

AU - Brage, Søren

AU - Reilly, John J.

AU - Trost, Stewart G.

AU - Jones, Rachel A.

AU - Janssen, Xanne

AU - Cliff, Dylan P.

AU - Van Loo, Christiana Maria Theodora

PY - 2018/3/1

Y1 - 2018/3/1

N2 - Purpose This study aimed to examine the validity of wrist acceleration cut points for classifying moderate (MPA), vigorous (VPA), and moderate-to-vigorous (MVPA) physical activity. Methods Fifty-seven children (5-12 yr) completed 15 semistructured activities. Three sets of wrist cut points (>192 mg, >250 mg, and >314 mg), previously developed using Euclidian norm minus one (ENMO 192+), GENEActiv software (GENEA 250+), and band-pass filter followed by Euclidian norm (BFEN 314+), were evaluated against indirect calorimetry. Analyses included classification accuracy, equivalence testing, and Bland-Altman procedures. Results All cut points classified MPA, VPA, and MVPA with substantial accuracy (ENMO 192+: κ = 0.72 [95% confidence interval = 0.72-0.73], MVPA: area under the receiver operating characteristic curve (ROC-AUC) = 0.85 [0.85-0.86]; GENEA 250+: κ = 0.75 [0.74-0.76], MVPA: ROC-AUC = 0.85 [0.85-0.86]; BFEN 314+: κ = 0.73 [0.72-0.74], MVPA: ROC-AUC = 0.86 [0.86-0.87]). BFEN 314+ misclassified 19.7% non-MVPA epochs as MPA, whereas ENMO 192+ and GENEA 250+ misclassified 32.6% and 26.5% of MPA epochs as non-MVPA, respectively. Group estimates of MPA time were equivalent (P < 0.01) to indirect calorimetry for the BFEN 314+ MPA cut point (mean bias = -1.5%, limits of agreement [LoA] = -57.5% to 60.6%), whereas estimates of MVPA time were equivalent (P < 0.01) to indirect calorimetry for the ENMO 192+ (mean bias = -1.1%, LoA = -53.7% to 55.9%) and GENEA 250+ (mean bias = 2.2%, LoA = -56.5% to 52.2%) cut points. Individual variability (LoA) was large for MPA (min: BFEN 314+, -60.6% to 57.5%; max: GENEA 250+, -42.0% to 104.1%), VPA (min: BFEN 314+, -238.9% to 54.6%; max: ENMO 192+, -244.5% to 127.4%), and MVPA (min: ENMO 192+, -53.7% to 55.0%; max: BFEN 314+, -83.9% to 25.3%). Conclusion Wrist acceleration cut points misclassified a considerable proportion of non-MVPA and MVPA. Group-level estimates of MVPA were acceptable; however, error for individual-level prediction was larger.

AB - Purpose This study aimed to examine the validity of wrist acceleration cut points for classifying moderate (MPA), vigorous (VPA), and moderate-to-vigorous (MVPA) physical activity. Methods Fifty-seven children (5-12 yr) completed 15 semistructured activities. Three sets of wrist cut points (>192 mg, >250 mg, and >314 mg), previously developed using Euclidian norm minus one (ENMO 192+), GENEActiv software (GENEA 250+), and band-pass filter followed by Euclidian norm (BFEN 314+), were evaluated against indirect calorimetry. Analyses included classification accuracy, equivalence testing, and Bland-Altman procedures. Results All cut points classified MPA, VPA, and MVPA with substantial accuracy (ENMO 192+: κ = 0.72 [95% confidence interval = 0.72-0.73], MVPA: area under the receiver operating characteristic curve (ROC-AUC) = 0.85 [0.85-0.86]; GENEA 250+: κ = 0.75 [0.74-0.76], MVPA: ROC-AUC = 0.85 [0.85-0.86]; BFEN 314+: κ = 0.73 [0.72-0.74], MVPA: ROC-AUC = 0.86 [0.86-0.87]). BFEN 314+ misclassified 19.7% non-MVPA epochs as MPA, whereas ENMO 192+ and GENEA 250+ misclassified 32.6% and 26.5% of MPA epochs as non-MVPA, respectively. Group estimates of MPA time were equivalent (P < 0.01) to indirect calorimetry for the BFEN 314+ MPA cut point (mean bias = -1.5%, limits of agreement [LoA] = -57.5% to 60.6%), whereas estimates of MVPA time were equivalent (P < 0.01) to indirect calorimetry for the ENMO 192+ (mean bias = -1.1%, LoA = -53.7% to 55.9%) and GENEA 250+ (mean bias = 2.2%, LoA = -56.5% to 52.2%) cut points. Individual variability (LoA) was large for MPA (min: BFEN 314+, -60.6% to 57.5%; max: GENEA 250+, -42.0% to 104.1%), VPA (min: BFEN 314+, -238.9% to 54.6%; max: ENMO 192+, -244.5% to 127.4%), and MVPA (min: ENMO 192+, -53.7% to 55.0%; max: BFEN 314+, -83.9% to 25.3%). Conclusion Wrist acceleration cut points misclassified a considerable proportion of non-MVPA and MVPA. Group-level estimates of MVPA were acceptable; however, error for individual-level prediction was larger.

KW - ActiGraph

KW - activity monitor

KW - children

KW - validation

KW - objective measurement

KW - GENEActiv

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UR - https://www.repository.cam.ac.uk/handle/1810/270949

UR - https://journals.lww.com/acsm-msse/

U2 - 10.1249/MSS.0000000000001449

DO - 10.1249/MSS.0000000000001449

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EP - 616

JO - Medicine and Science in Sports and Exercise

T2 - Medicine and Science in Sports and Exercise

JF - Medicine and Science in Sports and Exercise

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