Comparison between self-reported and accelerometer-derived measurements for classifying children and adolescents as physically active in Chile

The aim of this study was to compare self-reported with two accelerometer-derived methods to classify Chilean children and adolescents as physically active. In total, 247 students wore an accelerometer on their hips during 7 consecutive days to classify them as physically active based on (1) daily accumulation of ≥ 60 minutes of moderate-to-vigorous physical activity (MVPA) on each of the seven days, and (2) average MVPA ≥ 60 minutes/day. Also, participants were classified as physically active if they reported being active for at least 60 minutes in all seven days. When using the accelerometer data, 0.8% were active in all seven days, while 10.5% recorded ≥ 60 minutes MVPA per day on average. Based on self-report, 7.2% were physically active. The agreement between self-reported and accelerometer estimations were poor. Important differences were observed between the self-reported and device-derived methods for classifying children and adolescents as physically active. When comparing them, some considerations should be taken. The findings suggest that these methods are not interchangeable. Therefore, if possible, they should be used as complementary measurements.

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What they say and what they do: comparing physical activity across the USA, England and the Netherlands

Journal of Epidemiology & Community Health ◽

10.1136/jech-2017-209703 ◽

2018 ◽

Vol 72 (6) ◽

pp. 471-476 ◽

Cited By ~ 26

Author(s):

Arie Kapteyn ◽

James Banks ◽

Mark Hamer ◽

James P Smith ◽

Andrew Steptoe ◽

...

Keyword(s):

Physical Activity ◽

The Netherlands ◽

Age Groups ◽

The Self ◽

Self Report ◽

Objective Measures ◽

Accelerometer Data ◽

Physically Active ◽

Self Reports ◽

The Usa

BackgroundPhysical activity (PA) is important for maintaining health, but there are fundamental unanswered questions on how best it should be measured.MethodsWe measured PA in the Netherlands (n=748), the USA (n=540) and England (n=254), both by a 7 day wrist-worn accelerometer and by self-reports. The self-reports included a global self-report on PA and a report on the frequency of vigorous, moderate and mild activity.ResultsThe self-reported data showed only minor differences across countries and across groups within countries (such as different age groups or working vs non-working respondents). The accelerometer data, however, showed large differences; the Dutch and English appeared to be much more physically active than Americans h (For instance, among respondents aged 50 years or older 38% of Americans are in the lowest activity quintile of the Dutch distribution). In addition, accelerometer data showed a sharp decline of PA with age, while no such pattern was observed in self-reports. The differences between objective measures and self-reports occurred for both types of self-reports.ConclusionIt is clear that self-reports and objective measures tell vastly different stories, suggesting that across countries people use different response scales when answering questions about how physically active they are.

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Compliance of the 24-Hour Movement Guidelines in 9- to 11-Year-Old Children From a Low-Income Town in Chile

Journal of Physical Activity and Health ◽

10.1123/jpah.2019-0672 ◽

2020 ◽

Vol 17 (10) ◽

pp. 1034-1041

Author(s):

Marcelo Toledo-Vargas ◽

Patricio Perez-Contreras ◽

Damian Chandia-Poblete ◽

Nicolas Aguilar-Farias

Keyword(s):

Physical Activity ◽

Mixed Methods ◽

Sedentary Behavior ◽

Low Income ◽

Vigorous Physical Activity ◽

Sixth Grade ◽

The Self ◽

Self Report ◽

Physically Active ◽

Valid Data

Background: The purpose was to determine the proportion of 9- to 11-year-old children meeting the 24-hour movement guidelines (24-HMG) in a low-income town from Chile. Methods: Physical activity, sedentary behavior (recreational screen), and sleep times were measured with both questionnaire and accelerometer in 258 children from third to sixth grade. Meeting the 24-HMG was defined as having ≥60 minutes per day of moderate to vigorous physical activity, ≤2 hour day of screen time, and 9 to 11 hours of sleep per night. Compliance rates were calculated as self-reported 24-HMG, with all estimations based on questionnaires, and mixed 24-HMG, in which physical activity and sleep were determined with an accelerometer and sedentary behavior was determined with a questionnaire. Results: About 198 children (10.1 [0.8] y, range 9–11 y) provided valid data for estimating self-reported 24-HMG, and 141 for mixed 24-HMG. Only 3.2% and 0.7% met the 24-HMG when using the self-reported and mixed methods, respectively. When assessing individual recommendations, 13.1% and 3.7% of the sample were physically active based on the self-report and accelerometer, respectively. About a quarter met the sedentary behavior recommendations, while around 50% met the sleep recommendations with both self-reported and mixed methods. Conclusions: An extremely low percentage of the participants met the 24-HMG. Multicomponent initiatives must be implemented to promote healthy movement behaviors in Chilean children.

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Abstract MP028: Physical Activity Relates to Lower Visceral Adiposity in Children and Adolescents

Circulation ◽

10.1161/circ.125.suppl_10.amp028 ◽

2012 ◽

Vol 125 (suppl_10) ◽

Author(s):

Amanda E Staiano ◽

Stephanie T Broyles ◽

Alok K Gupta ◽

Peter T Katzmarzyk

Keyword(s):

Physical Activity ◽

Adipose Tissue ◽

Children And Adolescents ◽

Body Fat ◽

Vigorous Physical Activity ◽

Regular Physical Activity ◽

Self Report ◽

Percent Body Fat ◽

Lower Body ◽

Body Fat Percent

Introduction: Expansion of visceral adipose tissue (VAT) associates with adverse metabolic changes. While regular moderate-to-vigorous activity is associated with lower total body fat in children and adolescents, it is unknown how physical activity relates to other adiposity indices, including VAT. Hypothesis: We hypothesized that regular physical activity in children and adolescents associates with lower body fat, percent body fat, abdominal subcutaneous adipose tissue (SAT), and VAT. Methods: The sample included 393 boys and girls aged 5–18 years (45.6% White, 50.6% African American, and 3.8% Other). Body fat and percent body fat were measured by dual-energy x-ray absorptiometry. Abdominal SAT and VAT mass were measured by magnetic resonance imaging between the highest point of the liver and the lower pole of the right kidney (using 5 to 8 cross-sectional slices, 4.76 cm apart). Participants were categorized as being regularly active by self-report: moderate-to-vigorous physical activity of ≥ 60 minutes/day, ≥ 4 days/week. Those who were physically active fewer than 4 days/week were categorized as not regularly active. Results: In this sample of children and adolescents, 45.6% of participants were regularly active. One-way ANCOVAs adjusted for age and sex demonstrated that regularly active youth had significantly less body fat (p<0.01) and lower percent body fat (p<0.01) than those who were not regularly active. One-way ANCOVAs adjusted for age, gender, and body fat, revealed that regularly active children and adolescents had no difference in SAT but had significantly lower amounts of VAT (p<0.05) when compared to those who were not regularly active. Conclusion: Engagement in moderate-to-vigorous physical activity for at least 60 minutes on four or more days of the week in children and adolescents was related to lower body fat, percent body fat and VAT, when compared to those youth who were less active. The promotion of regular physical activity has significant public health implications for body fat accumulation and for controlling excess VAT during childhood and adolescence.

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Abstract MP40: A Steps/Day Translation of the Moderate-to-Vigorous Physical Activity Guideline for Children and Adolescents

Circulation ◽

10.1161/circ.127.suppl_12.amp40 ◽

2013 ◽

Vol 127 (suppl_12) ◽

Author(s):

Marc A Adams ◽

William D Johnson ◽

Catrine Tudor-Locke

Keyword(s):

Physical Activity ◽

Children And Adolescents ◽

Vigorous Physical Activity ◽

Area Under The Curve ◽

Physical Activity Guideline ◽

Accelerometer Data ◽

Predictive Values ◽

Medical Practitioners ◽

Cut Points ◽

Practical Applications

Background: An evidence-based steps/day translation of U.S. federal guidelines for youth to engage in ≥60 minutes/day of moderate-to-vigorous physical activity (MVPA) would help health researchers, medical practitioners, and lay professionals charged with increasing youth’s physical activity (PA). The purpose of this study was to determine the number of free-living steps/day (both raw and adjusted to a pedometer scale) that correctly classified children (6-11 years) and adolescents (12-17 years) as meeting the 60-minute MVPA guideline using the 2005-2006 National Health and Nutrition Examination Survey (NHANES) accelerometer data, and to evaluate the 12,000 steps/day recommendation recently adopted by the President’s Challenge Physical Activity and Fitness Awards Program. Methods: NHANES children (n=915) and adolescents (n= 1,302) were included in this analysis. Receiver Operating Characteristic (ROC) curve plots and classification statistics (i.e., false positive and negatives, positive and negative predictive values) revealed candidate steps/day cut points that discriminated meeting/not meeting the MVPA threshold by age group, gender and different accelerometer activity cut points. The Evenson cut point and two Freedson age-specific (3 and 4 METs) cut points were used to define minimum MVPA, and optimal steps/day were examined for raw steps and adjusted to a pedometer-scale to facilitate translation to lay populations. Results: For boys and girls (6-11 years) with ≥ 60 minutes/day of MVPA, a range of 11,500-13,500 raw steps/day for children was the optimal range that balanced classification errors. For adolescent boys and girls (12-17) with ≥60 minutes/day of MVPA, 11,500-14,000 raw steps/day was optimal. Translation to a pedometer-scaling reduced these minimum values by 2,500 step/day to 9,000 steps/day. Area under the curve was ≥84% in all analyses. Conclusions: A persistent question in the physical activity literature has been “How many steps/day are enough?” No single study has definitively identified a precise and unyielding steps/day value for youth. Considering the other evidence to date, we propose a reasonable ‘rule of thumb’ value of ≥ 11,500 steps/day for both children and adolescents (and both genders), accepting that more MVPA is better. For practical applications, 9,000 steps/day appears to be a more pedometer-friendly value. These steps/day values provide a marker that medical practitioners and lay professionals can use in clinical settings to estimate and increase youth’s moderate-to-vigorous physical activity.

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Relationship of Physical Activity and Sedentary Time with Metabolic Health in Children and Adolescents Measured by Accelerometer: A Narrative Review

Healthcare ◽

10.3390/healthcare9060709 ◽

2021 ◽

Vol 9 (6) ◽

pp. 709

Author(s):

Jungjun Lim ◽

Joon-Sik Kim ◽

Soyoung Park ◽

On Lee ◽

Wi-Young So

Keyword(s):

Physical Activity ◽

Data Collection ◽

Children And Adolescents ◽

Sedentary Time ◽

Vigorous Physical Activity ◽

Health Indicators ◽

Metabolic Health ◽

Moderate Intensity ◽

Accelerometer Data ◽

Relationship Of

The purpose of this study was to summarize the associations of physical activity (PA) and sedentary time (SED) with metabolic health and examine the effects of time reallocation on metabolic health in adolescents using accelerometer data. A literature search was conducted using PubMed, ScienceDirect, Web of Science, Cochran Library, and Google Scholar, and 27 articles were reviewed. Recent research generally confirms the associations of PA and SED with metabolic health. High PA levels and low SED levels had a positive relationship with metabolic health. Moreover, reallocating 10 min of daily SED to PA was associated with better metabolic health indicators. These results were stronger for moderate-to-vigorous physical activity than for light intensity PA. Thus, efforts to convert SED into PA of at least moderate intensity appear to be an effective strategy to prevent metabolic disease development in children and adolescents. However, some of the associations between PA and metabolic health indicators were inconsistent, depending on age, obesity degree, and PA intensity. Additionally, various accelerometer data collection and processing criteria impact the interpretation of the results. Therefore, consistent accelerometer data collection and analysis methods are needed in future studies. Further, intervention studies are required to verify the causality and effectiveness of the isotemporal substitution model.

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Determinants of students' physical activity: a 12-month follow-up study in Ningxia Province

10.21203/rs.3.rs-48118/v2 ◽

2020 ◽

Author(s):

Wei Huang ◽

Xiangrong Shi ◽

Yujie Wang ◽

Xiaoling Li ◽

Pengpeng Gao ◽

...

Keyword(s):

Physical Activity ◽

Children And Adolescents ◽

Intervention Program ◽

Vigorous Physical Activity ◽

External Environment ◽

School Factors ◽

Physically Active ◽

Factors Associated ◽

The Individual

Abstract Background Physical activity has many health benefits for children and adolescents. However, the prevalence of physical inactivity in school-aged children and adolescents remains high in China. Many factors impact student’s moderate- and vigorous- physical activity (MVPA). This study investigated the factors associated with student's MVPA level, and the determinants of the change of student’s MVPA behavior.Methods This is a longitudinal study with a 12-month follow-up. The study samples came from 2016 and 2017 Physical Activity and Fitness in China—The Youth Study, 1597 students (aged 9-18 years) from 31 primary, junior high, and high schools, in Ningxia province, were included. Factors about the individual and external environment were measured by questionnaire at baseline and after 12 months. Multiple logistic regression was analyzed to examine the factors that impact student’s MVPA level and the determinants of the change of student’s MVPA behavior.Results There is no difference in students MVPA level between 2016 and 2017. Boys were more physically active than girls at baseline(RR 1.55, 95%CI 1.10, 2.20), as well as children than adolescents but not significant(RR 1.33, 95%CI 0.93, 1.90). Neighborhood factors associated students MVPA level significant, but all of these factors were removed from the longitudinal model(neighborhood sport event, organization, facility, et al). Individual and school factors were important for students MVPA maintaining and positively development(i.e. gender, attitude, school PE class and PA time, et al).Conclusions In conclusion, both neighborhood and school factors affect students MVPA behavior, but school play a more meaningful role in maintaining and promoting students MVPA level. In addition, the internal motivation may be more important than external environment for students MVPA level. Our research provide some evidences for future intervention program for promoting MVPA behavior, but more large samples and objective-assessed researches should be conduct to explore the determinants of MVPA.

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Validation of a 3-Day Physical Activity Recall Instrument in Female Youth

Pediatric Exercise Science ◽

10.1123/pes.15.3.257 ◽

2003 ◽

Vol 15 (3) ◽

pp. 257-265 ◽

Cited By ~ 126

Author(s):

Russell R. Pate ◽

Rebecca Ross ◽

Marsha Dowda ◽

Stewart G. Trost ◽

John R. Sirard

Keyword(s):

Physical Activity ◽

African American ◽

Adolescent Girls ◽

Vigorous Physical Activity ◽

Ninth Grade ◽

The Self ◽

Self Report ◽

Female Youth ◽

Valid Instrument ◽

Physical Activity Recall

The purpose of this study was to examine the validity of the 3-Day Physical Activity Recall (3DPAR) self-report instrument in a sample of eighth and ninth grade girls (n = 70, 54.3% white, 37.1% African American). Criterion measures of physical activity were derived using the CSA 7164 accelerometer. Participants wore a CSA monitor for 7 consecutive days and completed the self-report physical activity recall for the last 3 of those days. Self-reported total METs, 30-min blocks of MVPA, and 30-min blocks of VPA were all significantly correlated with analogous CSA variables for 7 days (r = 0.35–0.51; P < 0.01) and 3 days (r = 0.27–0.46; P < 0.05) of monitoring. The results indicate that the 3DPAR is a valid instrument for assessing overall, vigorous, and moderate to vigorous physical activity in adolescent girls.

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Habit Strength of Physical Activity and Sedentary Behavior among Children and Adolescents

Pediatric Exercise Science ◽

10.1123/pes.20.1.5 ◽

2008 ◽

Vol 20 (1) ◽

pp. 5-17 ◽

Cited By ~ 34

Author(s):

Stef P.J. Kremers ◽

Johannes Brug

Keyword(s):

Physical Activity ◽

Children And Adolescents ◽

Sedentary Behavior ◽

Convergent Validity ◽

The Self ◽

Self Report ◽

Internal Reliability ◽

Early Evidence ◽

Behavior Study ◽

Behavioral Frequency

Internal reliability, convergent validity, and construct validity of the Self-Report Habit Index (SRHI) were examined with respect to physical activity (Study 1) and sedentary behavior (Study 2) among children and adolescents. Internal reliabilities of the SRHI proved to be high in both studies. The SRHI correlated significantly with behavioral frequency measures, as well as with known cognitive associates of these behaviors. Moreover, theory-based moderating influences of habit on the attitude–intention and intention–behavior relationships were identified. The study provides early evidence to support the concept of habit as being important in dealing with physical activity in children.

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Physical Activity in Adolescent Females with Type 1 Diabetes

International Journal of Pediatrics ◽

10.1155/2010/328318 ◽

2010 ◽

Vol 2010 ◽

pp. 1-6 ◽

Cited By ~ 14

Author(s):

Bahareh Schweiger ◽

Georgeanna Klingensmith ◽

Janet K. Snell-Bergeon

Keyword(s):

Physical Activity ◽

Type 1 Diabetes ◽

Glycemic Control ◽

Vigorous Physical Activity ◽

Linear Regression Analysis ◽

Adolescent Females ◽

Self Report ◽

Activity Levels ◽

Physically Active

Objective. We sought to identify amount of physical activity and relationship of physical activity to glycemic control among adolescent females 11 to 19 years of age with type 1 diabetes mellitus (T1DM). We also sought to evaluate associations of age and ethnicity with physical activity levels.Research Design and Methods. Adolescent females ages 11–19 years (n=203) were recruited during their outpatient diabetes appointment. Physical activity was obtained by self-report and was categorized as the number of days subjects had accumulated 60 minutes of moderate-to-vigorous physical activity during the past 7 days and for a typical week.Results. Girls reported being physically active for at least 60 minutes per day on2.7±2.3days in the last week, and on3.1±2.2days in a typical week. A greater number of physically active days in a typical week were associated with lower A1c (P=.049) in linear regression analysis.Conclusion. Adolescent females with T1DM report exercising for at least 60 minutes about 3 days per week, which does not meet the international recommendations of 60 minutes of moderate-to-vigorous activity per day. It is particularly important that adolescent girls with T1DM be encouraged to exercise since a greater number of physically active days per week is associated with better glycemic control.

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The Acceptability, Feasibility and Effectiveness of Wearable Activity Trackers for Increasing Physical Activity in Children and Adolescents: A Systematic Review

International Journal of Environmental Research and Public Health ◽

10.3390/ijerph18126211 ◽

2021 ◽

Vol 18 (12) ◽

pp. 6211

Author(s):

Amy V. Creaser ◽

Stacy A. Clemes ◽

Silvia Costa ◽

Jennifer Hall ◽

Nicola D. Ridgers ◽

...

Keyword(s):

Physical Activity ◽

Systematic Review ◽

Children And Adolescents ◽

Behaviour Change Techniques ◽

Physically Active ◽

Self Monitoring ◽

Start Date ◽

Activity Trackers ◽

Wearable Activity Trackers

Wearable activity trackers (wearables) embed numerous behaviour change techniques (BCTs) that have previously been shown to increase adult physical activity (PA). With few children and adolescents achieving PA guidelines, it is crucial to explore ways to increase their PA. This systematic review examined the acceptability, feasibility, and effectiveness of wearables and their potential mechanisms of action for increasing PA in 5 to 19-year-olds. A systematic search of six databases was conducted, including data from the start date of each database to December 2019 (PROSPERO registration: CRD42020164506). Thirty-three studies were included. Most studies (70%) included only adolescents (10 to 19 years). There was some—but largely mixed—evidence that wearables increase steps and moderate-to-vigorous-intensity PA and reduce sedentary behaviour. There were no apparent differences in effectiveness based on the number of BCTs used and between studies using a wearable alone or as part of a multi-component intervention. Qualitative findings suggested wearables increased motivation to be physically active via self-monitoring, goal setting, feedback, and competition. However, children and adolescents reported technical difficulties and a novelty effect when using wearables, which may impact wearables’ long-term use. More rigorous and long-term studies investigating the acceptability, feasibility, and effectiveness of wearables in 5 to 19-year-olds are warranted.

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