The actiheart in adolescents: a doubly labelled water validation

Campbell, Nerissa, Prapavessis, Harry, Gray, Casey, McGowan, Erin, Rush, Elaine and Maddison, Ralph 2012, The actiheart in adolescents: a doubly labelled water validation, Pediatric exercise science, vol. 24, no. 4, pp. 589-602, doi: 10.1123/pes.24.4.589.

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Title The actiheart in adolescents: a doubly labelled water validation
Author(s) Campbell, Nerissa
Prapavessis, Harry
Gray, Casey
McGowan, Erin
Rush, Elaine
Maddison, RalphORCID iD for Maddison, Ralph orcid.org/0000-0001-8564-5518
Journal name Pediatric exercise science
Volume number 24
Issue number 4
Start page 589
End page 602
Total pages 14
Publisher Human Kinetics
Place of publication Champaign, Ill.
Publication date 2012-11
ISSN 1543-2920
Summary Background/Objective: This study investigated the validity of the Actiheart device for estimating free-living physical activity energy expenditure (PAEE) in adolescents. Subjects/Methods: Total energy expenditure (TEE) was measured in eighteen Canadian adolescents, aged 15–18 years, by DLW. Physical activity energy expenditure was calculated as 0.9 X TEE minus resting energy expenditure, assuming 10% for the thermic effect of feeding. Participants wore the chest mounted Actiheart device which records simultaneously minute-by-minute acceleration (ACC) and heart rate (HR). Using both children and adult branched equation modeling, derived from laboratory-based activity, PAEE was estimated from the ACC and HR data. Linear regression analyses examined the association between PAEE derived from the Actiheart and DLW method where DLW PAEE served as the dependent variable. Measurement of agreement between the two methods was analyzed using the Bland-Altman procedure. Results: A nonsignificant association was found between the children derived Actiheart and DLW PAEE values (R = .23, R2 = .05, p = .36); whereas a significant association was found between the adult derived Actiheart and DLW PAEE values (R = .53, R2 = .29, p < .05). Both the children and adult equation models lead to overestimations of PAEE by the Actiheart compared with the DLW method, by a mean difference of 31.42 kcal·kg−·d−1 (95% limits of agreement: −45.70 to −17.15 kcal·kg−1·d−1 and 9.80 kcal·kg−1·d−1 (95% limits of agreement: −21.22-1.72 kcal·kg−1·d−1), respectively. Conclusion: There is relatively poor measurement of agreement between the Actiheart and DLW for assessing free-living PAEE in adolescents. Future work should develop group based branched equation models specifically for adolescents to improve the utility of the device in this population.
Language eng
DOI 10.1123/pes.24.4.589
Field of Research 110699 Human Movement and Sports Science not elsewhere classified
1106 Human Movement And Sports Science
1114 Paediatrics And Reproductive Medicine
1302 Curriculum And Pedagogy
Socio Economic Objective 920499 Public Health (excl. Specific Population Health) not elsewhere classified
HERDC Research category C1.1 Refereed article in a scholarly journal
ERA Research output type C Journal article
Copyright notice ©2012, Human Kinetics
Persistent URL http://hdl.handle.net/10536/DRO/DU:30082033

Document type: Journal Article
Collections: Faculty of Health
School of Exercise and Nutrition Sciences
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