scholarly journals 0269 Restricting Sleep Increases Teens’ Sedentary Behavior Without Impacting Moderate to Vigorous Physical Activity

SLEEP ◽  
2020 ◽  
Vol 43 (Supplement_1) ◽  
pp. A102-A103
Author(s):  
K Krietsch ◽  
K Duraccio ◽  
N Zang ◽  
D Beebe
Keyword(s):  
Physical Activity ◽  
Sedentary Behavior ◽  
Sleep Duration ◽  
Vigorous Physical Activity ◽  
Sleep Restriction ◽  
Activity Levels ◽  
Sedentary Behaviors ◽  
Short Sleep ◽  
Physical Activity Levels ◽  
Sleep Condition

Abstract Introduction Short sleep duration has been linked to obesity risk in adolescence. However, most research has focused on potential changes in appetite/intake, rather than physical activity or sedentary behaviors. It remains unknown if, in the daily lives of adolescents, sleep restriction increases moderate- to-vigorous physical activity (e.g., by providing more time for it) or discourages such activity (in favor of sedentary behaviors). This was the first study to use gold-standard objective measures to assess cause-and-effect relationships between sleep duration and the resulting activity levels of adolescents in the naturalistic environment. Methods N=104 healthy teens (ages 14–18) completed the 3-week within-subjects crossover sleep manipulation experiment during the summer. Following a 7-night a sleep stabilization week, teens were randomly assigned to 5 nights in Short Sleep (6.5hrs sleep opportunity) or Healthy Sleep (9.5hrs sleep opportunity). Following a 2-night “washout” period, they crossed over to the alternate sleep condition. Throughout the study, they wore validated waist-worn accelerometers to objectively measure sedentary and physical activity levels, and wrist-worn actigraphs to confirm adherence to their sleep condition. Results When in Short Sleep (vs. Healthy Sleep), teens on average slept 112 minutes less (p<.0001, d=1.72) per wrist actigraphy. Waist-worn accelerometers reflected 99 more minutes in sedentary behavior (p<.0001, d=.97), and 16 more minutes in light physical activity (p=.002, d=.31) during short sleep. Teens did not differ in moderate-to-vigorous physical activity between conditions (p=.95, d=.03). Conclusion Among healthy adolescents, a realistic dose of sleep restriction did not affect moderate-to-vigorous physical activity levels, but did sharply increase time in sedentary behavior. Given the negative weight and health consequences of sedentary behavior, these results have practical implications for obesity prevention/intervention efforts. They suggest that extending teen sleep may neither encourage nor discourage healthy physical activity, but may help curb unhealthy behaviors (e.g., sedentary behavior). Support R01 HL120879

scholarly journals Impact of parents’ physical activity on preschool children’s physical activity: a cross-sectional study

PeerJ ◽  
2018 ◽  
Vol 6 ◽  
pp. e4405 ◽  
Author(s):  
Chang Xu ◽  
Minghui Quan ◽  
Hanbin Zhang ◽  
Chenglin Zhou ◽  
PeiJie Chen
Keyword(s):  
Physical Activity ◽  
Sedentary Behavior ◽  
Vigorous Physical Activity ◽  
Cross Sectional Study ◽  
Maternal Influence ◽  
Activity Levels ◽  
Cross Sectional ◽  
Physical Activity Levels ◽  
Paternal Influence ◽  
Children’S Physical Activity

Purpose This study examined the associations of physical activity levels between parents and their pre-school children based on gender and weekday/weekend. Method A total of 247 parent-preschool child triads from Shanghai, China were analyzed. The children had a mean age of 57.5 ± 5.2 months. Both sedentary behavior and physical activity were measured in all participants using an ActiGraph GT3X+ accelerometer over seven consecutive days from Monday through the following Sunday. A multivariate regression model was derived to identify significant relationships between parental and child physical activity according to gender and weekday/weekend. Results There was a significant correlation between mothers’ and girls’ moderate-to-vigorous physical activity (MVPA) and total physical activity (TPA) on weekdays. Fathers’ MPVA levels correlated significantly with those of boys and girls, with paternal influence appearing to be stronger than maternal influence. However, there was not a significant correlation between fathers’ and children’s TPA. TPA levels of both mothers and fathers correlated with those of girls, but not with those of boys. Parental sedentary levels on the weekend correlated significantly with girls’ levels, but not with boys’ levels. Children’s physical activity levels on weekends were influenced more by fathers’ activity levels than by mothers’, while the opposite was observed on weekdays. Conclusion Sedentary behavior and physical activity levels of parents can strongly influence those of their preschool children, with maternal influence stronger during the weekdays and paternal influence stronger on the weekends. Parents’ activity levels influence girls’ levels more strongly than they influence boys’ levels.

scholarly journals Objectively Quantified Physical Activity and Sedentary Behavior in Predicting Visceral Adiposity and Liver Fat

2016 ◽  
Vol 2016 ◽  
pp. 1-10 ◽  
Author(s):  
Shelley E. Keating ◽  
Helen M. Parker ◽  
Toby G. Pavey ◽  
Michael K. Baker ◽  
Ian D. Caterson ◽  
...  
Keyword(s):  
Physical Activity ◽  
Sedentary Behavior ◽  
Vigorous Physical Activity ◽  
Liver Lipid ◽  
Habitual Physical Activity ◽  
Liver Fat ◽  
Moderate Activity ◽  
Activity Levels ◽  
Nonalcoholic Fatty Liver ◽  
Physical Activity Levels

Objective. Epidemiologic studies suggest an inverse relationship between nonalcoholic fatty liver disease (NAFLD), visceral adipose tissue (VAT), and self-reported physical activity levels. However, subjective measurements can be inaccurate and prone to reporter bias. We investigated whether objectively quantified physical activity levels predicted liver fat and VAT in overweight/obese adults.Methods. Habitual physical activity was measured by triaxial accelerometry for four days (n=82). Time spent in sedentary behavior (MET < 1.6) and light (MET 1.6 < 3), moderate (MET 3 < 6), and vigorous (MET 6 < 9) physical activity was quantified. Magnetic resonance imaging and spectroscopy were used to quantify visceral and liver fat. Bivariate correlations and hierarchical multiple regression analyses were performed.Results. There were no associations between physical activity or sedentary behavior and liver lipid. Sedentary behavior and moderate and vigorous physical activity accounted for just 3% of variance for VAT (p=0.14) and 0.003% for liver fat (p=0.96). Higher levels of VAT were associated with time spent in moderate activity (r=0.294,p=0.007), but there was no association with sedentary behavior. Known risk factors for obesity-related NAFLD accounted for 62% and 40% of variance in VAT and liver fat, respectively (p<0.01).Conclusion. Objectively measured levels of habitual physical activity and sedentary behavior did not influence VAT or liver fat.

scholarly journals ASSOCIATION BETWEEN SCREEN-BASED SEDENTARY BEHAVIOR AND LEISURE-TIME PHYSICAL ACTIVITY AMONG LITHUANIAN 5–7TH GRADE SCHOOLCHILDREN

2014 ◽  
Vol 1 (3) ◽  
pp. 1-10
Author(s):  
Vaiva Balčiūnienė
Keyword(s):  
Physical Activity ◽  
Sedentary Behavior ◽  
Computer Games ◽  
Internet Use ◽  
Leisure Time ◽  
Leisure Time Physical Activity ◽  
Activity Levels ◽  
Sedentary Behaviors ◽  
Physical Activity Levels ◽  
Tv Watching

Research background. The prevalence of obesity and chronic diseases among adolescents is rising rapidly in many Western European countries, including Lithuania (Zaborskis, Raskilas, 2011; Currie et al., 2012). Physical activity levels of children and adolescents have declined, whereas in contrast sedentary behavior has increased during the last few decades. In this study based on the cities and districts of Lithuanian population, leisure time physical activity and screen-based sedentary behaviors among 5–7th grade schoolchildren were assessed. The aim of the research was to evaluate association between screen-based sedentary behavior and leisure-time physical activity among Lithuanian 5–7th grade schoolchildren. Research methods and organization. Applying nested random selection / sampling method, 1117 schoolchildren of 5–7th grades from ten Lithuanian pro-gymnasiums, gymnasiums and secondary schools located in different cities and districts were selected. The study was conducted in 2013. The respondents were given a Questionnaire to identify schoolchildren’s demographic data, assess physical activity levels (recommended by the WHO) as well as the levels of time for screen-based sedentary behaviors. Results. In the survey it was established that only 23.3 % of schoolchildren were sufficiently physically active during their leisure time. The average length of TV watching was 3.30 ± 1.67 hours, playing computer 3.51 ± 1.86 hours and internet use 3.41 ± 1.85 hours on week-days. 7th grade girls engaged more frequently in TV watching as compared to 7th grade boys (p < 0.01). The time of playing computer games was higher among boys compared to girls (p < 0.001), but the time of internet use was higher among 6th grade girls compared to 6th grade boys (p < 0.05). The main factors that led to the lack of sufficient physical activity were female gender, senior grade and the higher time of playing computer games and searching the internet. Conclusions. The association between the time of screen-based sedentary behaviors and leisure time physical activity were determined. These study results encourage research of the relations between “exergame” and physical activity among schoolchildren. Keywords: physical activity, screen-based sedentary behaviors, schoolchildren.

Association Between Television Viewing and Physical Activity in 10-Year-Old Brazilian Children

2015 ◽  
Vol 12 (10) ◽  
pp. 1401-1408 ◽  
Author(s):  
Gerson Luis de Moraes Ferrari ◽  
Timoteo Leandro Araujo ◽  
Luis Oliveira ◽  
Victor Matsudo ◽  
Emily Mire ◽  
...  
Keyword(s):  
Physical Activity ◽  
Sedentary Behavior ◽  
Television Viewing ◽  
Vigorous Physical Activity ◽  
Activity Levels ◽  
Tv Viewing ◽  
Physical Activity Levels ◽  
Brazilian Children

Background:Studies have found an association between television (TV) viewing and physical activity levels. The purpose of this study was to examine the association between TV viewing and physical activity in 10-year-old Brazilian children.Methods:The sample consisted of 485 children. Self-reported TV viewing on weekdays and weekends was assessed by questionnaire. An Actigraph GT3X+ accelerometer was used to monitor the range of physical activity intensities (including moderate-to-vigorous physical activity; MVPA), sedentary behavior (SB) and steps/day over 7 days.Results:Daily MVPA was highest among children viewing TV <1 hour/day (69 min) compared with children viewing 1 to 2 hours/day (61 min), 3 to 4 hours/day (55 min) and ≥ 5 hours/day (59 min) on weekdays (P = .0015). Differences in MVPA were not observed across TV categories on weekends. The prevalence of reaching 60 min/day of MVPA and 12,000 steps/day on weekdays was significantly greater in children viewing ≤ 2 hours/day (51.7% and 23.5%, respectively) compared with those viewing > 2 hours/day (38.6%, P = .0058; and 15.1%, P = .0291, respectively). There was no difference in SB across TV viewing categories.Conclusion:Time spent in MVPA and the frequency of meeting MVPA guidelines were significantly higher among children viewing ≤ 2 hours/day of TV on weekdays compared with those viewing more.

scholarly journals Urban versus rural lifestyle in adolescents: associations between environment, physical activity levels and sedentary behavior

2016 ◽  
Vol 14 (4) ◽  
pp. 461-467 ◽  
Author(s):  
Manuela Ferreira Regis ◽  
◽  
Luciano Machado Ferreira Tenório de Oliveira ◽  
Ana Raquel Mendes dos Santos ◽  
Ameliane da Conceição Reubens Leonidio ◽  
...  
Keyword(s):  
Physical Activity ◽  
Sedentary Behavior ◽  
Rural Areas ◽  
Urban Areas ◽  
Binary Logistic Regression ◽  
Cluster Sampling ◽  
Activity Levels ◽  
Sedentary Behaviors ◽  
Physical Activity Levels ◽  
Urban And Rural Areas

ABSTRACT Objective To analyze the levels of physical activity and sedentary behavior in adolescents living in urban and rural areas. Methods An epidemiological, cross-section study with quantitative design, carried out at the regional level. The sample comprised 6,234 students aged 14 to 19 years, selected using random cluster sampling. The χ2 test and binary logistic regression were used in the analysis. Results A total of 74.5% of adolescents lived in urban areas. After adjustment, rural residents spent less time watching television (odds ratio – OR: 0.45; 95% confidence interval – 95%CI: 0.39-0.52), using a computer and/or playing video games (OR: 0.30; 95%CI: 0.22-0.42), or sitting down (OR: 0.66; 95%CI: 0.54-0.80); chose passive leisure less often (OR: 0.83; 95%IC: 0.72-0.95) and were less likely to be classified as insufficiently active (OR: 0.88; 95%IC: 0.78-0.99) when compared to urban residents, regardless of sex or age. The fact that adolescents living in rural areas who did not work were more likely to be classified as insufficiently active (OR: 2.59; 95%CI: 2.07-3.24) emphasized the significant role of occupation in physical activity levels in this group. Conclusion Adolescents living in rural areas were less exposed to the sedentary behaviors, chose more active leisure, and had higher levels of physical activity. Place of residence and occupation may play a major role in youth lifestyle.

scholarly journals Influence of adherence to social distancing due to the COVID-19 pandemic on physical activity level in post-bariatric patients

2020 ◽  
Author(s):  
Diego Rezende ◽  
Ana Jessica Pinto ◽  
Karla Fabiana Goessler ◽  
Carolina Nicoletti ◽  
Sofia Mendes Sieczkowska ◽  
...  
Keyword(s):  
Physical Activity ◽  
Sedentary Behavior ◽  
Physical Activity Level ◽  
Vigorous Physical Activity ◽  
Activity Level ◽  
Activity Levels ◽  
Social Distancing ◽  
Validated Questionnaire ◽  
Physical Activity Levels ◽  
Bariatric Patients

Objectives: To assess physical activity levels in post-bariatric patients who adhered or not to social distancing measures due to the Covid-19 pandemic. Our secondary aim was to compare physical activity estimates between objectively measured and self-reported physical activity level. Methods: In this descriptive, cross-sectional study, we assessed physical activity level using accelerometers and a validated questionnaire in 33 post-bariatric patients who reported to be adherent (n=15) or not (n=18) to social distancing measures. Results: Patients adherent to social distancing measures spent more time in sedentary behavior (1.1 hours/day [95%CI: 0.1, 2.2]; p=0.045) and less time in moderate-to-vigorous physical activity (-12.2 min/day [95%CI: -23.8, -0.6]; p=0.040) compared to non-adherent ones. No difference was observed for light-intensity physical activity. Bland-Altman analysis comparing objective and subjective physical activity estimates showed a bias for time spent in sedentary behavior and moderate-to-vigorous physical activity of 2.8 hours/day and 8.5 min/day, respectively. Conclusion: Post-bariatric patients who were adherent to social distancing measures due to the Covid-19 outbreak were more inactive and sedentary than non-adherent ones. Additionally, questionnaire data widely underestimated sedentary behavior. Strategies to increase or at least sustain physical activity levels in post-bariatric patients exposed to social distancing measures are necessary during the Covid-19 pandemic.

Measuring Students’ Physical Activity Levels: Validating SOFIT for Use with High-School Students

2004 ◽  
Vol 23 (3) ◽  
pp. 235-251 ◽  
Author(s):  
Paul Rowe ◽  
Hans van der Mars ◽  
Joel Schuldheisz ◽  
Susan Fox
Keyword(s):  
Physical Activity ◽  
High School ◽  
High School Students ◽  
Physical Education ◽  
Vigorous Physical Activity ◽  
Physical Activity Behavior ◽  
Activity Levels ◽  
Sedentary Behaviors ◽  
School Students ◽  
Physical Activity Levels

This study was conducted to validate the System for Observing Fitness Instruction Time (SOFIT) for measuring physical activity levels of high-school students. Thirty-five students (21 girls and 14 boys from grades 9-12) completed a standardized protocol including lying, sitting, standing, walking, running, curl-ups, and push-ups. Heart rates and Energy Expenditure, that is, oxygen uptake, served as concurrent validity criteria. Results indicate that SOFIT discriminates accurately among high-school students’ sedentary behaviors (i.e., lying down, sitting, standing) and moderate to vigorous physical activity behavior and is recommended for use in research and assessment of physical activity levels in physical education classes for this age group. Implications for use of SOFIT by both researchers and teachers in physical education are described, as well.

Physical activity levels during adventure-physical education lessons

2012 ◽  
Vol 18 (2) ◽  
pp. 245-257 ◽  
Author(s):  
Jeffrey Gehris ◽  
Elizabeth Myers ◽  
Robert Whitaker
Keyword(s):  
Physical Activity ◽  
Public Schools ◽  
Physical Education ◽  
Vigorous Physical Activity ◽  
Physical Development ◽  
Activity Levels ◽  
Instruction Time ◽  
Physical Activity Levels ◽  
The Mean

Adventure-physical education has been proposed to promote adolescents’ physical development, but little is known about physical activity levels during such lessons. Using the System for Observing Fitness Instruction Time, we observed students’ (ages 11–14 years) physical activity levels in co-educational classes during 43 adventure-physical education lessons at seven public schools. The mean percentage (±SD) of time spent in moderate-to-vigorous physical activity (MVPA) was 28.3% (±16.3%). The greatest percentage of lesson time was spent in two activities—high elements (24.1% ± 36.5%) and initiatives (22.3% ± 32.4%). When data were aggregated across all lessons, 40.0% of the time in high elements and 13.7% of the time in initiatives was spent in MVPA. Of all MVPA time, 31.5% occurred in high elements and another 12.6% in initiatives. Compared with traditional physical education lessons, less time is spent in MVPA during adventure lessons. Efforts to increase MVPA should target high elements and initiative activities.

scholarly journals Objectively Measured Physical Activity and Sedentary Time among Children and Adolescents in Morocco: A Cross-Sectional Study

2018 ◽  
Vol 2018 ◽  
pp. 1-7 ◽  
Author(s):  
Issad Baddou ◽  
Asmaa El Hamdouchi ◽  
Imane El Harchaoui ◽  
Kaoutar Benjeddou ◽  
Naima Saeid ◽  
...  
Keyword(s):  
Physical Activity ◽  
Children And Adolescents ◽  
Cardiovascular Health ◽  
Sedentary Time ◽  
Vigorous Physical Activity ◽  
Physical Activity Guideline ◽  
Activity Levels ◽  
Cross Sectional ◽  
Physical Activity Levels ◽  
Objectively Measured

Background. Regular physical activity in childhood and adolescent plays an important role in reducing the risk of cardiovascular health diseases, diabetes, and obesity in adulthood. However, little is known about physical activity levels (PA) and sedentary time among children and adolescents in Morocco. Objective. To examine gender, type of day, and age grade differences in objectively measured sedentary time, physical activity levels, and physical activity guideline attainment among children and adolescents in Morocco. Method. 172 children/adolescents (mean age = 10.92 ± 1.55 years, 49.4% are boys) were recruited for this study and wore a tri-axial accelerometer (GT3X+) for 7 consecutive days. Time spent in sedentary, PA levels, and daily steps were measured and compared according to gender, age grade, and the type of day (weekdays/weekends). Results. In weekdays children/adolescents spent more time in sedentary than weekends (p < 0.001). Boys were eight times more likely to meet the recommendation for at least 60 min of moderate to vigorous physical activity per day than girls (OR: 8.569; 95% [CI]: 4.23–17.32), p < 0.001. Conclusion. These findings highlight the need for effective and sustainable strategies and programs aiming to promote physical activity and to reduce sedentary behavior among children and adolescents in Morocco.

scholarly journals Objectively assessed moderate-to-vigorous physical activity levels among primary school children in Norway: The Health Oriented Pedagogical Project (HOPP)

2018 ◽  
Vol 46 (21_suppl) ◽  
pp. 38-47 ◽  
Author(s):  
Wei Hai Deng ◽  
Per Morten Fredriksen
Keyword(s):  
Physical Activity ◽  
Linear Regression ◽  
Primary School ◽  
School Children ◽  
Vigorous Physical Activity ◽  
Age Groups ◽  
Participation Rate ◽  
Primary School Children ◽  
Activity Levels ◽  
Physical Activity Levels

Aims: The objective was to investigate moderate-to-vigorous physical activity levels (MVPA) of primary school children at baseline of the Health Oriented Pedagogical Project (HOPP), Norway. Methods: Data on 2123 children aged 6–12 years were included for analysis (75% participation rate). Average minutes per day in MVPA was objectively measured using accelerometry based on seven-day averages. The sample was analysed for age-, sex-, socioeconomic-, and season-related patterns. A linear regression investigated the moderating effect of these factors as well as body mass index and waist circumference. Results: Some 86.5% of the sample had at least 60 min/day MVPA, averaging 90.7 min/day. The main differences in daily averages were between age groups 6½–9 and 10–12 ( p < .05). Boys (95.8 min/day, 95% CI: 94.1–97.5) were more active than girls (85.6 min/day, 95% CI: 83.9–87.2) in all age groups ( p < .0001). MVPA was lower by 3.5 min ( p < .0001) per additional year of age in the linear regression (R2 = 0.176) and was reduced by 20 min less per day in MVPA in the winter months compared with the summer months ( p < .0001). Conclusions: Physical activity levels are already in decline from 6–7 years old and are likely to continue to decline into adolescence. Interventions must therefore focus on primary school children.

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