Purpose
To evaluate the multi-group and longitudinal invariance of ANNs to predict physical activity (PA) type and PA energy expenditure (METs) in youth.
Methods
The study was conducted at two sites. Site 1 (S1) served as the training and testing sample and comprised 100 youth mean age 11.0 ± 2.7 y. Site 2 (S2) served as ...
Purpose To compare associations between objective and subjective measures of moderate to vigorous physical activity (MVPA) & cardiometabolic biomarkers.
Methods 2174 (1110 boys) youth (12-19 years) from the 2003-6 NHANES combined surveys with self-reported MVPA (SRMVPA) in the previous 30 days & four 10-hour days of accelerometry MVPA (AMVPA) (Actigraph 7164) were included. The ...
Background
African American youth residing in the South are at high risk for obesity and physical inactivity. A growing body of evidence suggests that persons living in activity-friendly environments engage in more physical activity (PA); however, access of public recreational facilities varies by neighborhood and demographic characteristics. Additionally, historical and ...
Background
Changes in physical activity (PA) levels can be observed among youth. The majority of 11 year olds in Denmark do meet the recommend level of PA; the majority of 15 year olds do not. The chances of not meeting the recommended level of PA as adults are correlated with not meeting ...
Background Due to concern about United States (US) levels of physical activity among youth, in 2009 the American Academy of Pediatrics released a policy statement promoting environments and policies favoring physical activity, such as consideration of easier access to parks and open space. Parks provide free or low cost public space ...
Background
Increasing understanding of environmental and social correlates of physical activity can inform environmental and policy changes that help create active communities for youth. An emerging body of research suggests that all youth may not have the same level of access to physical activity resources and this may explain socioeconomic ...
Background The local build environment is believed to play an important role in youth physical activity (PA) as their independent mobility is restricted. To be able to target interventions to promote PA among youth knowledge about objectively measured PA patterns is important. We would like to be able to answer ...
Introduction
Sedentary behavior (SB) is directly associated with a greater risk of death from cardiovascular problems, cancer and all causes. Moreover, SB is directly associated with obesity in children. This study examined whether there was a significant seasonal variation in objectively measured SB in Portuguese youth across five months of ...
Introduction
Knowing the degree of physical activity in a population group becomes the first step to address sport promotion policies to encourage a healthy lifestyle that may have impact on better living conditions. Traditionally, we have used questionnaires and log books to ascertain the practice of physical activities and sports. ...
The absence of comparative validity studies has prevented researchers from reaching consensus regarding the application of intensity-related accelerometer cut points for children and adolescents.
Purpose
This study aimed to evaluate the classification accuracy of five sets of independently developed ActiGraph cut points using energy expenditure, measured by indirect calorimetry, as ...