PMID- 19674366
OWN - NLM
STAT- MEDLINE
DCOM- 20091209
LR  - 20160511
IS  - 1442-200X (Electronic)
IS  - 1328-8067 (Linking)
VI  - 51
IP  - 4
DP  - 2009 Aug
TI  - Diagnostic quality of Actigraph-based physical activity cut-offs for children: 
      what overweight/obesity references can tell?
PG  - 568-73
LID - 10.1111/j.1442-200X.2008.02801.x [doi]
AB  - BACKGROUND: There is conflicting literature about Actigraph-based cut-off points 
      (CoP) that define the lower limit of moderate-to-vigorous physical activity 
      (MVPA) among children. The aim of the present study was to compare the diagnostic 
      quality of Actigraph-based CoP relative to different body mass index (BMI) 
      classification systems of the weight status of children. METHODS: One hundred and 
      thirteen children aged 8-11 years recruited from three randomly selected 
      elementary schools wore the Actigraph, model 7164 (Actigraph Manufacturing 
      Technology) for 3 days. Five CoP, expressed in counts per minute (c.p.m.; CoP 
      1000 CoP 2000, CoP 3000, CoP 3200, and CoP 3600) were used to compute their MVPA. 
      The area under the receiver operating characteristic curves (AUC) together with 
      specific indices allowed assessment of the performance of these CoP in reference 
      to overweight/obesity status as defined using BMI-based criteria from the 
      International Obesity Task Force (IOTF), French References (FR) and World Health 
      Organization (WHO) standards. RESULTS: Overweight/obesity frequency ranged from 
      30% to 42%, with no sex-related difference. All AUC (range, 0.623-0.660) were 
      significantly higher than 0.500 except from those of CoP 1000 and 2000 using the 
      IOTF criteria (0.602 +/- 0.058 and 0.601 +/- 0.057, respectively) and the FR 
      (0.608 +/- 0.060 for CoP 1000). Furthermore, with the WHO standards, all the CoP 
      provided non-significant AUC (range, 0.566-0.597). According to the IOTF and the 
      FR criteria, respectively, CoP 3600 had the highest probability of correct 
      decision (0.62 and 0.68), the lowest misclassification errors (0.38 and 0.32), 
      the highest validity coefficient (0.21 and 0.29), and the highest expected 
      maximum utility (59 and 83). CONCLUSION: When children are classified using 
      BMI-based criteria, the threshold of 3600 c.p.m. should be more appropriate in 
      discriminating non-overweight from overweight/obese.
FAU - Guinhouya, Comlavi B
AU  - Guinhouya CB
AD  - Institute of Engineering in Health of Lille, Laboratory of Public Health EA 2694, 
      University of Lille 2, Loos, France. ben.guinhouya@gmail.com
FAU - Apete, Geoffroy K
AU  - Apete GK
FAU - Hubert, Herve
AU  - Hubert H
LA  - eng
PT  - Comparative Study
PT  - Journal Article
PT  - Research Support, Non-U.S. Gov't
PL  - Australia
TA  - Pediatr Int
JT  - Pediatrics international : official journal of the Japan Pediatric Society
JID - 100886002
SB  - IM
MH  - Area Under Curve
MH  - *Body Mass Index
MH  - Child
MH  - Female
MH  - Humans
MH  - Male
MH  - *Motor Activity
MH  - Obesity/diagnosis/epidemiology
MH  - Overweight/classification/*diagnosis/epidemiology
MH  - ROC Curve
MH  - Reference Values
EDAT- 2009/08/14 09:00
MHDA- 2009/12/16 06:00
CRDT- 2009/08/14 09:00
PHST- 2009/08/14 09:00 [entrez]
PHST- 2009/08/14 09:00 [pubmed]
PHST- 2009/12/16 06:00 [medline]
AID - PED2801 [pii]
AID - 10.1111/j.1442-200X.2008.02801.x [doi]
PST - ppublish
SO  - Pediatr Int. 2009 Aug;51(4):568-73. doi: 10.1111/j.1442-200X.2008.02801.x.