Time-use movement behaviors are associated with scores of depression/anxiety among adolescents: A compositional data analysis.

Movement behaviors have been associated with mental health. The purposes of this study were to examine the association between movement behaviors and scores of depression/anxiety among adolescents and to determine the difference in depression/anxiety associated with reallocating time between different movement behaviors. This cross-sectional study included 217 Brazilian adolescents (15 to 18 years old, 49.

Neighborhood and Family Characteristics Associated with Adiposity and Physical Activity Engagement among Preschoolers in a Small Rural Community.

Unlabelled: The purpose of this study was to evaluate family and home/neighborhood characteristics associated with physical activity (PA) and adiposity among young children living in a small rural community.

Methods: Participants were 30 parents and their youngest child aged 2-5 years. Children wore accelerometers for 7 days.

Impact of COVID-19 Stay-at-Home Restrictions on Employment Status, Physical Activity, and Sedentary Behavior.

Background: North Americans report insufficient moderate-to-vigorous physical activity (MVPA) and ample sedentary behaviors (SBs), suggesting possible barriers to an active lifestyle. This study compared self-reported MVPA and SB before and during COVID-19 "Stay-at-Home" restrictions as a potential barrier across North America.

Methods: Questionnaires were distributed from 21 April to 9 May 2020.

Feasibility of Using Bioelectrical Impedance Analysis for Assessing Youth Weight and Health Status: Preliminary Findings.

This study assessed the accuracy of bioimpedance analysis (BIA) for measuring body composition and resting metabolic rate (RMR) in fasted and non-fasted state and the prospect of using phase angle (PA) to indicate cellular health in youth. BIA body composition, RMR, and hydration measures were compared to dual-energy -ray absorptiometry (DXA), MedGem metabolic analyzer, and urine specific gravity, respectively, at baseline in a fasted state using one-way ANOVAs. Repeated BIAs at 0, 30, 60, 90, and 120 min post-prandial were compared to baseline using repeated-measures ANOVA.

Behavioral classes related to physical activity and sedentary behavior on the evaluation of health and mental outcomes among Brazilian adolescents.

Latent Class Analysis can assist researchers interested in a better understanding of behavioral patterns and their association with health outcomes. This study aimed to identify lifestyle latent classes related to distinct domains of physical activity (PA) and sedentary behavior (SB) among adolescents and their association with health outcomes. This cross-sectional study included 217 Brazilian adolescents (15 to 18 years old, 49.

Measurement of Children's Real-Time Physical Activity Enjoyment Using a New Visual Analog Scale.

: This study validated the How(e) Happy Scale (HHS) for measuring children's real-time physical activity (PA) enjoyment across PA type, intensity, sex, and weight status and compared state versus trait enjoyment. : Children's (N = 31; 9.7 [1.

Does Wearing a Portable Metabolic Unit Affect Youth's Physical Activity or Enjoyment During Physically Active Games or Video Games?

Unlabelled: Portable metabolic units (PMUs) are used to assess energy expenditure, with the assumption that physical activity level and enjoyment are unaffected due to the light weight and small size.

Purpose: To assess differences in physical activity level and enjoyment while wearing and not wearing a PMU.

Method: Youth (8-17 y; N = 73) played children's games or active video games while wearing and not wearing a PMU (crossover design).

Comparison of Accelerometer-Based Cut-Points for Children's Physical Activity: Counts vs. Steps.

Accelerometers measure complex movements of children's free play moderate-vigorous physical activity (MVPA), including step and non-step movements. Current accelerometer technology has introduced algorithms to measure steps, along with counts. Precise interpretation of accelerometer-based cadence (steps/min) cut-points is necessary for accurately measuring and tracking children's MVPA.

Regional Variations in Physical Fitness and Activity in Healthy and Overweight Ecuadorian Adolescents.

Insufficient physical activity (PA) and excessive sedentary behavior (SB) are the main contributors to adolescent obesity. However, it is uncertain whether recent economic growth and urbanization in Ecuador are contributing to an obesogenic environment. This study assessed the relationships among fitness, PA, SB, and perceived social support for PA in adolescents from urban (Quito) and rural (Loja) Ecuador.

Using Video Direct Observation to Assess Children's Physical Activity During Recess.

Purpose: Traditional direct observation cannot provide continuous, individual-level physical activity (PA) data throughout recess. This study piloted video direct observation to characterize children's recess PA overall and by sex and weight status.

Methods: Children (N = 23; 11 boys; 6 overweight; third to fifth grade) were recorded during 2 recess periods, coding for PA duration, intensity, location, and type.

First-Year Osteopathic Medical Students' Knowledge of and Attitudes Toward Physical Activity.

Context: Current guidelines recommend that primary care physicians provide physical activity counseling as part of routine preventive health care. However, education regarding physical activity counseling often is not included or is inadequately covered in medical school curriculum, and it is unclear whether future physicians are prepared to offer effective counseling in this area.

Objective: To examine first-year medical students' knowledge of and attitudes toward physical activity and the importance of physical activity in patient counseling.

Cardiometabolic risk factors, metabolic syndrome and pre-diabetes in adolescents in the Sierra region of Ecuador.

Background: Excess weight (overweight and obesity) is the major modifiable risk factor for type 2 diabetes mellitus (T2DM) and other non-communicable diseases. However, excess weight may not be as predictive of diabetes risk as once thought. While excess weight and other obesity-related non-communicable diseases are of growing concern in low-middle income countries in Latin America, there is limited research on risk factors associated with T2DM in adolescents.

Effect of Prior Game Experience on Energy Expenditure During Xbox Kinect in Children and Teens.

Objective: To examine the effect of game-specific and overall Kinect experience and overall gaming habits on energy expenditure (EE) and enjoyment of children and adolescents (8-17 years) while playing Xbox Kinect exergames.

Materials And Methods: Participants (N = 55) played four active videogames for 6-10 minutes. Height, weight, and resting metabolic rate were measured and participants completed a survey on gaming habits and previous experience.

Energy Cost and Enjoyment of Active Videogames in Children and Teens: Xbox 360 Kinect.

Objective: New active videogames (AVGs) may provide youth an alternative to traditional play. The purpose of this study was to compare the physical activity energy expenditure (PAEE), intensity, and enjoyment of AVGs with those of seated videogames (SVGs).

Materials And Methods: Youth (8-17 years old) volunteered to play a random selection of six (two SVGs, four AVGs) videogames for 6-10 minutes each.

The physical activity energy cost of the latest active video games in young adults.

Background: Although promoted for weight loss, especially in young adults, it has yet to be determined if the physical activity energy expenditure (PAEE) and intensity of the newest active video games (AVGs) qualifies as moderate-to-vigorous physical activity (MVPA; > 3.0 METs). This study compared the PAEE and intensity of AVGs to traditional seated video games (SVGs).

Cross-validation of waist-worn GENEA accelerometer cut-points.

Purpose: The purpose of this study was to determine the classification accuracy of the waist gravity estimator of normal everyday activity (GENEA) cut-points developed by Esliger et al. for predicting intensity categories across a range of lifestyle activities.

Methods: Each participant performed one of two routines, consisting of seven lifestyle activities (home/office, ambulatory, and sport).

Classification accuracy of the wrist-worn gravity estimator of normal everyday activity accelerometer.

Purpose: The purpose of this study was to determine whether the published left-wrist cut points for the triaxial Gravity Estimator of Normal Everyday Activity (GENEA) accelerometer are accurate for predicting intensity categories during structured activity bouts.

Methods: A convenience sample of 130 adults wore a GENEA accelerometer on their left wrist while performing 14 different lifestyle activities. During each activity, oxygen consumption was continuously measured using the Oxycon mobile.

METs and accelerometry of walking in older adults: standard versus measured energy cost.

Purpose: This study aimed to measure the metabolic cost (METs) of walking activities in older adults, to examine the relationship between accelerometer output and METs across walking activities, and to compare measured MET values in older adults with the MET values in the compendium.

Methods: Twenty older adults (mean age = 75, range = 60-90 yr) completed eight walking activities (five treadmill based, three free living) for 6 min each. Oxygen consumption (V˙O2) and resting metabolic rate (RMR) were measured using a portable metabolic system, and motion was recorded using a waist-mounted ActiGraph accelerometer (GT3X; ActiGraph, Pensicola, FL).

Cardiometabolic biomarkers in young black girls: relations to body fatness and aerobic fitness, and effects of a randomized physical activity trial.

There is little evidence from randomized trials showing that physical activity alone influences biomarker profiles in youths. This study tested two hypotheses: (i) that elevated body fatness and poor fitness would be associated with unfavorable levels of cardiometabolic biomarkers in 8-12-y-old black girls (n = 242) and (ii) that a 10-mo PA intervention would have favorable effects on the fatness-related cardiometabolic biomarkers. At baseline, all fatness indices (i.

Accuracy of four resting metabolic rate prediction equations: effects of sex, body mass index, age, and race/ethnicity.

Objective: This study compared the accuracy of four commonly used RMR prediction equations to measured RMR obtained from the MedGem(®) metabolic analyzer.

Design And Methods: Height, weight and RMR were measured in 362 healthy individuals [51% female; body mass index (BMI): 17.6-50.

A 10-month physical activity intervention improves body composition in young black boys.

Objective. To determine if a 10-month after-school physical activity (PA) intervention could prevent deleterious changes in body composition and cardiovascular (CV) fitness in young black boys. Methods.

Energy expenditure and enjoyment of common children's games in a simulated free-play environment.

Objective: To measure the energy expenditure and enjoyment of children's games to be used in developing a school-based intervention for preventing excessive weight gain.

Study Design: Healthy weight (body mass index [BMI] < 85th percentile) and overweight or obese (BMI ≥ 85th percentile) third-grade children (15 boys; 13 girls) were recruited. In a large gymnasium, children performed 10 games randomly selected from 30 games used in previous interventions.

Accelerometer output and MET values of common physical activities.

Purpose: This article 1) provides the calibration procedures and methods for metabolic and activity monitor data collection, 2) compares measured MET values to the MET values from the compendium of physical activities, and 3) examines the relationship between accelerometer output and METs for a range of physical activities.

Methods: Participants (N = 277) completed 11 activities for 7 min each from a menu of 23 physical activities. Oxygen consumption (V O2) was measured using a portable metabolic system, and an accelerometer was worn.

Accelerometer prediction of energy expenditure: vector magnitude versus vertical axis.

Unlabelled: It is suggested that triaxial accelerometers (RT3) are superior to single-plane accelerometers for predicting energy expenditure (EE).

Purpose: To compare the RT3 uniaxial and triaxial prediction of activity EE (AEE) during treadmill activities (TM) and activities of daily living (ADL).

Methods: Two hundred and twelve subjects (aged 20-60 yr) completed TM speeds of 1.

Ten months of exercise improves general and visceral adiposity, bone, and fitness in black girls.

Objective: The goal of this study was to evaluate the impact of a 10-month after-school physical activity (PA) program on body composition and cardiovascular (CV) fitness in young black girls.

Research Methods And Procedures: Subjects were 8- to 12-year-olds recruited from elementary schools. Body composition was measured using anthropometrics {waist circumference and BMI, DXA [percentage body fat (%BF)] and bone mineral density (BMD)}, and magnetic resonance imaging [visceral adipose tissue (VAT)].