scholarly journals Objectively measured physical activity in one-year-old children from a Brazilian cohort: levels, patterns and determinants

2019 ◽  
Vol 16 (1) ◽  
Author(s):  
Luiza Isnardi Cardoso Ricardo ◽  
Inácio Crochemore M. da Silva ◽  
Otávio Amaral de Andrade Leão ◽  
Marlos Rodrigues Domingues ◽  
Fernando C. Wehrmeister
Keyword(s):  
Physical Activity ◽  
Sleep Time ◽  
Z Score ◽  
Physically Active ◽  
Maternal Schooling ◽  
Intensity Category ◽  
One Year ◽  
Objectively Measured ◽  
Objectively Measured Physical Activity ◽  
Brazilian Cohort

Abstract Background The aim of this study is to describe objectively measured physical activity (PA) and its correlates in one-year-old children. Methods The current study includes participants from the 2015 Pelotas (Brazil) birth cohort. At age one, PA was assessed in a 24-h protocol during 4 days with a wrist-attached accelerometer (ActiGraph, wGT3X-BT), from which two complete days of data were analyzed, with 5-s epochs. Results A total of 2974 individuals provided valid accelerometry data. Infants able to walk independently spent on average 19 h per day below 50 mg of acceleration (including sleep time), and those who could not walk spent on average 21 h in this intensity category. Girls spent approximately 10 min more than boys below 50 mg daily in both walking status categories, and less activity than boys on higher intensity categories. Boys and infants whose mothers were more physically active during pregnancy presented more acceleration, regardless of walking status. Among infants who could walk by themselves, those with mothers with one to eight schooling years; adequate length-for-age (z-score); not attending daycare; and more physically active fathers also showed higher levels of acceleration. Conclusions Our findings demonstrate higher levels of PA among boys and those children with higher maternal PA during pregnancy, regardless of walking status. Also, among infants able to independently walk, 1–8 years of maternal schooling, adequate length-for-age (z-score), no daycare attendance and higher paternal PA are positive correlates of objectively measured PA early in life.

scholarly journals Bi-Directional, Day-to-Day Associations between Objectively-Measured Physical Activity, Sedentary Behavior and Sleep among Office Workers

2021 ◽  
Vol 18 (15) ◽  
pp. 7999
Author(s):  
Emerald G. Heiland ◽  
Örjan Ekblom ◽  
Emil Bojsen-Møller ◽  
Lisa-Marie Larisch ◽  
Victoria Blom ◽  
...  
Keyword(s):  
Physical Activity ◽  
Sedentary Behavior ◽  
Mixed Models ◽  
Vigorous Physical Activity ◽  
Sleep Time ◽  
Office Workers ◽  
Sedentary Behaviors ◽  
Physically Active ◽  
Objectively Measured ◽  
Objectively Measured Physical Activity

The bi-directional, day-to-day associations between daytime physical activity and sedentary behavior, and nocturnal sleep, in office workers are unknown. This study investigated these associations and whether they varied by weekday or weekend day. Among 324 Swedish office workers (mean age 42.4 years; 33.3% men), moderate-to-vigorous physical activity (MVPA), and sedentary behaviors and sleep (total sleep time (TST) and sleep efficiency (SE)) were ascertained by using accelerometers (Actigraph GT3X) over 8 days. Multilevel linear mixed models were used to assess the bi-directional, day-to-day, within-person associations. Additional analyses stratified by weekend/weekday were performed. On average, participants spent 6% (57 min) of their day in MVPA and 59% (9.5 h) sedentary, and during the night, TST was 7 hours, and SE was 91%. More daytime sedentary behavior was associated with less TST that night, and reciprocally, more TST at night was associated with less sedentary behavior on the following weekday. Greater TST during the night was also associated with less MVPA the next day, only on weekdays. However, daytime MVPA was not associated with TST that night. Higher nighttime SE was associated with greater time spent sedentary and in MVPA on the following day, regardless if weekday or weekend day. Sleep may be more crucial for being physically active the following day than vice versa, especially on weekdays. Nevertheless, sedentary behavior’s relation with sleep time may be bi-directional. Office workers may struggle with balancing sleep and physical activity time.

scholarly journals Job Demand-Control-Support Model as Related to Objectively Measured Physical Activity and Sedentary Time in Working Women and Men

2019 ◽  
Vol 16 (18) ◽  
pp. 3370 ◽  
Author(s):  
Kristina Larsson ◽  
Örjan Ekblom ◽  
Lena V. Kallings ◽  
Maria Ekblom ◽  
Victoria Blom
Keyword(s):  
Physical Activity ◽  
Sedentary Time ◽  
Vigorous Physical Activity ◽  
Psychosocial Stressors ◽  
Physically Active ◽  
Negatively Associated ◽  
Job Demand ◽  
Objectively Measured ◽  
Demand Control ◽  
Objectively Measured Physical Activity

A physically active lifestyle incurs health benefits and physically active individuals show reduced reactivity to psychosocial stressors. However, the findings are inconclusive and are based on self-reported physical activity and sedentary time. The present study aimed at studying the associations between psychological stressors (job demand, control, support, JD-C-S) and objectively measured physical activity (PA) on various intensities from sedentary (SED) to vigorous physical activity. The participants were 314 employees from a cross-sectional study. PA data were collected with the accelerometer ActiGraph GT3X (Pensacola, FL, USA), SED data with the inclinometer activPAL (PAL Technologies Ltd., Glasgow, Scotland, UK), and psychosocial stressors with a web questionnaire. Results showed that vigorous-intensity PA was negatively associated with demand (β −0.15, p < 0.05), even when adjusted for the covariates. SED was negatively associated to support (β −0.13, p < 0.05). Stress significantly moderated relations between support and sedentary time (β −0.12, p < 0.05). Moderate PA (MVPA) was negatively associated with demand, but only when controlling for overtime (β −0.13, p < 0.05). MVPA was also negatively associated with control (β −0.15, p < 0.05) but not when work engagement was included in the model. Being more physically active and spending less time sedentary may help to handle job situations with high demand and low support.

scholarly journals Factors Related to Objectively Measured Physical Activity in Preschool Children

2009 ◽  
Vol 21 (2) ◽  
pp. 196-208 ◽  
Author(s):  
Karin A. Pfeiffer ◽  
Marsha Dowda ◽  
Kerry L. McIver ◽  
Russell R. Pate
Keyword(s):  
Physical Activity ◽  
Preschool Children ◽  
Outcome Measures ◽  
Vigorous Physical Activity ◽  
Parent Perceptions ◽  
Z Score ◽  
Parent Perception ◽  
Athletic Competence ◽  
Objectively Measured ◽  
Objectively Measured Physical Activity

This study examined correlates of objectively measured physical activity (PA) in a diverse sample of preschool children (age 3–5 years; n = 331). Accelerometer min·hr−1 of moderate-to-vigorous physical activity (MVPA) and nonsedentary activity (NSA) were the outcome measures. Correlations among potential correlates and PA ranged from r = −0.12−0.26. Correlates in the final MVPA model were age, race, sex, BMI Z score, and parent perception of athletic competence, explaining 37% of the variance. The NSA model included the latter two variables, explaining 35% of the variance. Demographic factors were correlates of PA; parent perceptions of children’s competence may be important regarding preschoolers’ PA.

scholarly journals Operationalizing and Testing the Concept of a Physical Activity Desert

2021 ◽  
pp. 1-8
Author(s):  
Russell R. Pate ◽  
Marsha Dowda ◽  
Ruth P. Saunders ◽  
Natalie Colabianchi ◽  
Morgan N. Clennin ◽  
...  
Keyword(s):  
Physical Activity ◽  
Cross Sectional Study ◽  
Fifth Grade ◽  
Activity Data ◽  
Cross Sectional ◽  
Physically Active ◽  
Fifth Grade Students ◽  
Objectively Measured ◽  
Children’S Physical Activity ◽  
Objectively Measured Physical Activity

Background: The prevalence of childhood obesity is higher in economically and socially deprived areas. Higher levels of physical activity reduce the risk of excessive weight gain in youth, and research has focused on environmental factors associated with children’s physical activity, though the term “physical activity desert” has not come into wide use. Methods: This exploratory study operationalized the term “physical activity desert” and tested the hypothesis that children living in physical activity deserts would be less physically active than children who do not. A cross-sectional study design was applied with 992 fifth-grade students who had provided objectively measured physical activity data. Five of 12 possible elements of the built environment were selected as descriptors of physical activity deserts, including no commercial facilities, no parks, low play spaces, no cohesion, and the presence of incivilities. Results: Univariate and multivariate analyses showed that only the absence of parks was associated with less physical activity in children. Conclusion: Children living in a “no park” zone were less active than their counterparts who lived near a park. This study contributes preliminary conceptual and operational definitions of “physical activity desert.” Future studies of physical activity deserts should be undertaken in larger and more diverse samples.

scholarly journals Objectively Measured Physical Activity and Body Mass Index in Preschool Children

2010 ◽  
Vol 2010 ◽  
pp. 1-6 ◽  
Author(s):  
Susana Maria Coelho Guimarães Vale ◽  
Rute Marina Roberto Santos ◽  
Luísa Maria da Cruz Soares-Miranda ◽  
Carla Marisa Maia Moreira ◽  
Jonatan R. Ruiz ◽  
...  
Keyword(s):  
Physical Activity ◽  
Body Mass Index ◽  
Preschool Children ◽  
Body Mass ◽  
Odds Ratio ◽  
Moderate Intensity ◽  
School Age ◽  
Z Score ◽  
Objectively Measured ◽  
Objectively Measured Physical Activity

Aim. To examine the association between objectively measured physical activity (PA) and body mass index (BMI) in preschool children.Methods. The study comprised 281 children (55.9% boys) aged from 4 to 6 years. PA was measured by accelerometer. Children were categorized as non-overweight (NOW) and overweight/obese (OW) according to the sex-adjusted BMI z-score (<1 and≥1, resp.).Results. Total and moderate intensity PA were not associated with BMI. We observed that a higher proportion of OW children were classified as low-vigorous PA compared to their NOW peers (43.9 versus 32.1%, resp.,P>.05). Logistic regression analysis showed that children with low-vigorous PA had higher odds ratio (OR) to be classified as OW compared to those with high-vigorous PA (OR=4.4; 95% CI: 1.4–13.4;P=.008) after adjusting for BMI at first and second years of life and other potential confounders.Conclusion. The data suggests that vigorous PA may play a key role in the obesity development already at pre-school age.

scholarly journals Temporal and bidirectional associations between physical activity and sleep in primary school-aged children

2017 ◽  
Vol 42 (3) ◽  
pp. 238-242 ◽  
Author(s):  
Grace E. Vincent ◽  
Lisa M. Barnett ◽  
David R. Lubans ◽  
Jo Salmon ◽  
Anna Timperio ◽  
...  
Keyword(s):  
Physical Activity ◽  
Energy Expenditure ◽  
Total Sleep Time ◽  
Sleep Time ◽  
School Aged Children ◽  
Time In Bed ◽  
Bidirectional Associations ◽  
Objectively Measured ◽  
Objectively Measured Physical Activity ◽  
Activity Energy

The directionality of the relationship between children’s physical activity and sleep is unclear. This study examined the temporal and bidirectional associations between objectively measured physical activity, energy expenditure, and sleep in primary school-aged children. A subgroup of children (n = 65, aged 8–11 years) from the Fitness, Activity and Skills Testing Study conducted in Melbourne, Australia, had their sleep and physical activity assessed using the SenseWear Pro Armband for 8 consecutive days. Outcome measures included time spent in light-intensity physical activiy (LPA), moderate- to vigorous-intensity physical activity (MVPA), activity energy expenditure (AEE), time in bed, total sleep time, and sleep efficiency. Multilevel analyses were conducted using generalized linear latent mixed models to determine whether physical activity on 1 day was associated with sleep outcomes that night, and whether sleep during 1 night was associated with physical activity the following day. No significant associations were observed between time in bed, total sleep time, and sleep efficiency with LPA, MVPA, and AEE in either direction. This study found no temporal or bidirectional associations between objectively measured physical activity, AEE, and sleep. Future research is needed to understand other sleep dimensions that may impact on or be influenced by physical activity to provide potential intervention targets to improve these outcomes.

One-year Stability of Objectively Measured Physical Activity in Young Brazilian Adults

2017 ◽  
Vol 14 (3) ◽  
pp. 208-212 ◽  
Author(s):  
Rafaela Costa Martins ◽  
Felipe Fossati Reichert ◽  
Renata Moraes Bielemann ◽  
Pedro C. Hallal
Keyword(s):  
Physical Activity ◽  
Climate Variables ◽  
Climate Information ◽  
Average Temperature ◽  
Intensity Physical Activity ◽  
Vigorous Intensity ◽  
One Year ◽  
Objectively Measured ◽  
Summer Rain ◽  
Objectively Measured Physical Activity

Background:To evaluate the 1-year stability of objectively measured physical activity among young adults living in South Brazil, as well as assessing the influences of temperature, humidity and precipitation on physical activity.Methods:A longitudinal study was conducted over 12 consecutive months (October 2012 to September 2013). Sixteen participants (8 men) used GT3X+ accelerometers 1 week per month for the entire year. Climate variables were obtained from an official climate information provider.Results:Physical activity was remarkably stable over the year—the proportion of the day spent in moderate-to-vigorous intensity physical activity (MVPA) was around 5% in every month. Average temperature (ρ = –0.64; P = .007), humidity (ρ = –0.68; P = .004) and rain (ρ = –0.67; P = .004) were inversely correlated to MVPA in the Summer. Rain was also inversely correlated to MVPA in the Spring (ρ = –0.54; P = .03).Conclusions:Objectively measured physical activity was stable over a 1-year period. Climate variables consistently influenced physical activity practice in the Summer, but not in the other seasons.

scholarly journals Objectively-measured physical activity in children is influenced by social indicators rather than biological lifecourse factors: Evidence from a Brazilian cohort

2017 ◽  
Vol 97 ◽  
pp. 40-44 ◽  
Author(s):  
Alan G Knuth ◽  
Inácio Crochemore M Silva ◽  
Vincent T van Hees ◽  
Kelly Cordeira ◽  
Alícia Matijasevich ◽  
...  
Keyword(s):  
Physical Activity ◽  
Social Indicators ◽  
Objectively Measured ◽  
Objectively Measured Physical Activity ◽  
Brazilian Cohort

scholarly journals Children with overweight are not less physically active than children of normal-weight

2019 ◽  
Author(s):  
Janneke van Leeuwen ◽  
Bart Koes ◽  
Winifred D. Paulis ◽  
Patrick J.E. Bindels ◽  
Marienke van Middelkoop
Keyword(s):  
Physical Activity ◽  
Vigorous Physical Activity ◽  
Normal Weight ◽  
Moderate Physical Activity ◽  
Overweight Children ◽  
Physically Active ◽  
Percentage Time ◽  
General Practices ◽  
Objectively Measured ◽  
Objectively Measured Physical Activity

Abstract Background The aim of this study was to investigate the differences in objectively measured physical activity and in self-reported physical activity between overweight and normal-weight children. Methods Data from a prospective cohort study including children, presenting at the participating general practices in the south-west of the Netherlands, were used. Children (aged 4-15 years) were categorized as normal-weight or overweight using age- and sex specific cut-off points. They wore an ActiGraph accelerometer for one week to register physical activity, and filled out a diary for one week about physical activity. Results A total of 57 children were included in this study. Overweight children spent significantly less percentage time per day in sedentary behavior (β -1.68 (95%CI -3.129, -0.07)). There were no significant differences in percentage time per day spent in light to moderate physical activity (β 1.52 (-0.01, 3.04)), and in moderate to vigorous physical activity (β 0.33 (-0.11, 0.78)). No significant differences were found between children of normal-weight and overweight in self-reported measures of physical activity. Conclusions Overweight children are not less physically active than normal-weight children, which may be associated with the risen awareness towards overweight/obesity and with implemented interventions for children with overweight/obesity.

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