000064488 001__ 64488
000064488 005__ 20180201112643.0
000064488 0247_ $$2doi$$a10.21037/atm.2016.07.16
000064488 0248_ $$2sideral$$a97491
000064488 037__ $$aART-2016-97491
000064488 041__ $$aeng
000064488 100__ $$0(orcid)0000-0001-6025-5070$$aHernández-Vicente, A.
000064488 245__ $$aValidation study of Polar V800 accelerometer
000064488 260__ $$c2016
000064488 5060_ $$aAccess copy available to the general public$$fUnrestricted
000064488 5203_ $$aBackground: The correct quantification of physical activity (PA) and energy expenditure (EE) in daily life is an important target for researchers and professionals. The objective of this paper is to study the validity of the Polar V800 for the quantification of PA and the estimation of EE against the ActiGraph (ActiTrainer) in healthy young adults. Methods: Eighteen Caucasian active people (50% women) aged between 19-23 years wore an ActiTrainer on the right hip and a Polar V800 on the preferred wrist during 7 days. Paired samples t-tests were used to analyze differences in outcomes between devices, and Pearson''s correlation coefficients to examine the correlation between outcomes. The agreement was studied using the Bland-Altman method. Also, the association between the difference and the magnitude of the measurement (heteroscedasticity) was examined. Sensitivity, specificity and area under the receiver operating characteristic curve (ROC-AUC value) were calculated to evaluate the ability of the devices to accurately define a person who fulfills the recommendation of 10, 000 daily steps. Results: The devices significantly differed from each other on all outcomes (P<0.05), except for Polar V800''s alerts vs. ActiTrainer''s 1 hour sedentary bouts (P=0.595) and Polar V800''s walking time vs. ActiTrainer''s lifestyle time (P=0.484). Heteroscedasticity analyses were significant for all outcomes, except for Kcal and sitting time. The ROC-AUC value was fair (0.781±0.048) and the sensitivity and specificity was 98% and 58%, respectively. Conclusions: The Polar V800 accelerometer has a comparable validity to the accelerometer in free-living conditions, regarding "1 hour sedentary bouts" and "V800''s walking time vs. ActiTrainer''s lifestyle time" in young adults.
000064488 540__ $$9info:eu-repo/semantics/openAccess$$aby-nc-nd$$uhttp://creativecommons.org/licenses/by-nc-nd/3.0/es/
000064488 655_4 $$ainfo:eu-repo/semantics/article$$vinfo:eu-repo/semantics/publishedVersion
000064488 700__ $$aSantos-Lozano, A.
000064488 700__ $$aDe Cocker, K.
000064488 700__ $$0(orcid)0000-0001-8374-9081$$aGaratachea, N.$$uUniversidad de Zaragoza
000064488 7102_ $$11006$$2245$$aUniversidad de Zaragoza$$bDepartamento de Fisiatría y Enfermería$$cEducación Física y Deportiva
000064488 773__ $$g4, 15 (2016), [12 pp.]$$pAnn. transl. med.$$tAnnals of Translational Medicine$$x2305-5839
000064488 8564_ $$s665543$$uhttps://zaguan.unizar.es/record/64488/files/texto_completo.pdf$$yVersión publicada
000064488 8564_ $$s90892$$uhttps://zaguan.unizar.es/record/64488/files/texto_completo.jpg?subformat=icon$$xicon$$yVersión publicada
000064488 909CO $$ooai:zaguan.unizar.es:64488$$particulos$$pdriver
000064488 951__ $$a2018-01-31-11:28:42
000064488 980__ $$aARTICLE