Titre :

Comparison and validation of accelerometer wear time and non-wear time algorithms for assessing physical activity levels in children and adolescents.

Auteur(s) :

Vanhelst, Jeremy [Auteur]
Lille Inflammation Research International Center - U 995 [LIRIC]
Vidal, Florian [Auteur]
Lille Inflammation Research International Center - U 995 [LIRIC]
Drumez, Elodie [Auteur]
Evaluation des technologies de santé et des pratiques médicales - ULR 2694 [METRICS]
Beghin, Laurent [Auteur]
Lille Inflammation Research International Center - U 995 [LIRIC]
Baudelet, Jean-Benoit [Auteur]
Lille Inflammation Research International Center - U 995 [LIRIC]
Coopman, Stephanie [Auteur]
Lille Inflammation Research International Center - U 995 [LIRIC]
gottrand, Fréderic [Auteur]
Lille Inflammation Research International Center - U 995 [LIRIC]
Lille Inflammation Research International Center (LIRIC) - U995

Titre de la revue :

BMC medical research methodology

Nom court de la revue :

BMC Med Res Methodol

Numéro :

19

Pagination :

72

Date de publication :

2019-04-02

ISSN :

1471-2288

Mot(s)-clé(s) en anglais :

Activity monitor
Wear time
Algorithms
Young
Free living conditions

Discipline(s) HAL :

Sciences du Vivant [q-bio]

Résumé en anglais : [en]

Accelerometers are widely used to measure sedentary time and daily physical activity (PA). However, data collection and processing criteria, such as non-wear time rules might affect the assessment of total PA and sedentary ...
Lire la suite >Accelerometers are widely used to measure sedentary time and daily physical activity (PA). However, data collection and processing criteria, such as non-wear time rules might affect the assessment of total PA and sedentary time and the associations with health variables. The study aimed to investigate whether the choice of different non-wear time definitions would affect the outcomes of PA levels in youth. Seventy-seven healthy youngsters (44 boys), aged 10-17 years, wore an accelerometer and kept a non-wear log diary during 4 consecutives days. We compared 7 published algorithms (10, 15, 20, 30, 60 min of continuous zeros, Choi, and Troiano algorithms). Agreements of each algorithm with the log diary method were assessed using Bland-Altmans plots and by calculating the concordance correlation coefficient for repeated measures. Variations in time spent in sedentary and moderate to vigorous PA (MVPA) were 30 and 3.7%. Compared with the log diary method, greater discrepancies were found for the algorithm 10 min (p < 0.001). For the time assessed in sedentary, the agreement with diary was excellent for the 4 algorithms (Choi, r = 0.79; Troiano, r = 0.81; 30 min, r = 0.79; 60 min, r = 0.81). Concordance for each method was excellent for the assessment of time spent in MVPA (> 0.86). The agreement for the wear time assessment was excellent for 5 algorithms (Choi r = 0.79; Troiano r = 0.79; 20 min r = 0.77; 30 min r = 0.80; 60 min r = 0.80). The choice of non-wear time rules may considerably affect the sedentary time assessment in youth. Using of appropriate data reduction decision in youth is needed to limit differences in associations between health outcomes and sedentary behaviors and may improve comparability for future studies. Based on our results, we recommend the use of the algorithm of 30 min of continuous zeros for defining non-wear time to improve the accuracy in assessing PA levels in youth. NCT02844101 (retrospectively registered at July 13th 2016).Lire moins >

Langue :

Anglais

Audience :

Internationale

Vulgarisation :

Non

Établissement(s) :

CHU Lille
Inserm
Université de Lille

Collections :

• Institut de Recherche Translationnelle sur l'Inflammation (INFINITE) - U1286
• METRICS : Evaluation des technologies de santé et des pratiques médicales - ULR 2694

Date de dépôt :

2019-10-22T08:17:00Z
2019-11-12T10:23:13Z
2021-05-17T07:04:43Z
2022-02-02T09:20:22Z