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https://www.readbyqxmd.com/read/28923052/accessing-physical-activity-among-young-adults-attending-a-university-the-role-of-sex-race-ethnicity-technology-use-and-sleep
#1
Samuel D Towne, Marcia G Ory, Matthew Lee Smith, S Camille Peres, Adam W Pickens, Ranjana K Mehta, Mark Benden
BACKGROUND: Identifying factors associated with recommended physical activity (PA) levels are critical in efforts to combat the obesity epidemic and related comorbidities. METHODS: We conducted cross-sectional analyses of college students (n = 490) enrolled in a large southern state university in October of 2014. Our aim was to identify sociodemographic characteristics, technology use, and sleep patterns among college students and their independent relationship to recommended PA...
September 18, 2017: BMC Public Health
https://www.readbyqxmd.com/read/28922063/individual-calibration-of-accelerometers-in-children-and-their-health-related-implications
#2
Lynne M Boddy, Conor Cunningham, Stuart J Fairclough, Marie H Murphy, Gavin Breslin, Lawrence Foweather, Rebecca M Dagger, Lee E F Graves, Nicola D Hopkins, Gareth Stratton
This study compared children's physical activity (PA) levels, the prevalence of children meeting current guidelines of ≥60 minutes of daily moderate to vigorous PA (MVPA), and PA-health associations using individually calibrated (IC) and empirical accelerometer cutpoints. Data from 75 (n = 32 boys) 10-12 year old children were included in this study. Clustered cardiometabolic (CM) risk, directly measured cardiorespiratory fitness (CRF), anthropometric and 7 day accelerometer data were included within analysis...
September 18, 2017: Journal of Sports Sciences
https://www.readbyqxmd.com/read/28921747/pitfalls-in-accelerometer-based-measurement-of-physical-activity-the-presence-of-reactivity-in-an-adult-population
#3
Sophie Baumann, Stefan Groß, Lisa Voigt, Antje Ullrich, Franziska Weymar, Thea Schwaneberg, Marcus Dörr, Christian Meyer, Ulrich John, Sabina Ulbricht
OBJECTIVE: When a behavior is monitored, it is likely to change, even if no change may be intended. This phenomenon is known as measurement reactivity. We investigated systematic changes in accelerometer-based measures over the days of monitoring as an indicator of measurement reactivity in an adult population. METHODS: One hundred seventy-one participants from the general population (65% women; mean age = 55 years, range: 42-65 years) wore accelerometers for seven consecutive days to measure sedentary behavior and physical activity...
September 16, 2017: Scandinavian Journal of Medicine & Science in Sports
https://www.readbyqxmd.com/read/28920072/associations-between-neighborhood-socioeconomic-environment-and-physical-activity-in-cuban-immigrants
#4
Olivia Affuso, Chelsea R Singleton, Scott C Brown, Tatiana Perrino, Shi Huang, José Szapocznik
Physical inactivity is a major public health concern because it is a determinant of obesity and obesity-related chronic diseases. Few longitudinal studies have examined the association between neighborhood socioeconomic (SES) environment and change in physical activity behaviors. Additionally, few studies have examined this association in immigrant groups or Hispanic subgroups such as Cubans. This research aimed to determine if neighborhood SES is associated with longitudinal change in moderate-to-vigorous physical activity (MVPA) among Cuban immigrants who participate in the Cuban Health Study in Miami, Florida...
December 2016: SSM—Population Health
https://www.readbyqxmd.com/read/28915225/physical-activity-not-sedentary-time-predicts-dual-energy-x-ray-absorptiometry-measured-adiposity-age-5-to-19-years
#5
Kathleen F Janz, Piroska Boros, Elena M Letuchy, Soyang Kwon, Trudy L Burns, Steven M Levy
PURPOSE: To examine the associations among physical activity (PA), sedentary time (SED), and TV viewing (TV) with fat mass (FAT) and visceral adipose tissue mass (VAT) from childhood through adolescence (5-19 yr). METHODS: Participants in the Iowa Bone Development Study (n = 230 males and 233 females) were examined at ages 5, 8, 11, 13, 15, 17, and 19 yr. Accelerometers measured moderate- or vigorous-intensity PA (MVPA; min·d), light-intensity PA (LPA; min·d), and SED (h·d)...
October 2017: Medicine and Science in Sports and Exercise
https://www.readbyqxmd.com/read/28913718/identify-a-shared-neural-circuit-linking-multiple-neuropsychiatric-symptoms-with-alzheimer-s-pathology
#6
Xixi Wang, Ping Ren, Mark Mapstone, Yeates Conwell, Anton P Porsteinsson, John J Foxe, Rajeev D S Raizada, Feng Lin
Neuropsychiatric symptoms (NPS) are common in Alzheimer's disease (AD)-associated neurodegeneration. However, NPS lack a consistent relationship with AD pathology. It is unknown whether any common neural circuits can link these clinically disparate while mechanistically similar features with AD pathology. Here, we explored the neural circuits of NPS in AD-associated neurodegeneration using multivariate pattern analysis (MVPA) of resting-state functional MRI data. Data from 98 subjects (70 amnestic mild cognitive impairment and 28 AD subjects) were obtained...
September 15, 2017: Brain Imaging and Behavior
https://www.readbyqxmd.com/read/28912652/objectively-measured-physical-activity-levels-among-ethnic-minority-children-attending-school-based-afterschool-programs-in-a-high-poverty-neighborhood
#7
Youngdeok Kim, Marc Lochbaum
Ethnic minority children living in high poverty neighborhoods are at high risk of having insufficient physical activity (PA) during school days and, thus, the importance of school as a place to facilitate PA in these underserved children has been largely emphasized. This study examined the levels and patterns of PA in minority children, with particular focus on the relative contributions of regular physical education (PE) and school-based afterschool PA program in promoting moderate- and vigorous-intensity PA (MVPA) during school days...
September 2017: Journal of Sports Science & Medicine
https://www.readbyqxmd.com/read/28912648/a-motivational-model-of-physical-education-and-links-to-enjoyment-knowledge-performance-total-physical-activity-and-body-mass-index
#8
Arto Gråstén, Anthony Watt
The present paper examined the full sequence of the Hierarchical Model of Motivation in physical education (PE) including motivational climate, basic psychological needs, intrinsic motivation, and related links to contextual enjoyment, knowledge, performance, and total moderate to vigorous physical activity (MVPA). Gender differences and correlations with body mass index (BMI) were also analyzed. Cross-sectional data was represented by self-reports and objective assessments of 770 middle school students (52% of girls) in North-East Finland...
September 2017: Journal of Sports Science & Medicine
https://www.readbyqxmd.com/read/28912195/associations-between-participation-in-organised-physical-activity-in-the-school-or-community-outside-school-hours-and-neighbourhood-play-with-child-physical-activity-and-sedentary-time-a-cross-sectional-analysis-of-primary-school-aged-children-from-the-uk
#9
Russell Jago, Corrie Macdonald-Wallis, Emma Solomon-Moore, Janice L Thompson, Debbie A Lawlor, Simon J Sebire
OBJECTIVES: To assess the extent to which participation in organised physical activity in the school or community outside school hours and neighbourhood play was associated with children's physical activity and sedentary time. DESIGN: Cross-sectional study. SETTING: Children were recruited from 47 state-funded primary schools in South West England. PARTICIPANTS: 1223 children aged 8-9 years old. OUTCOME MEASURES: Accelerometer-assessed moderate-to-vigorous-intensity physical activity (MVPA) and sedentary time...
September 14, 2017: BMJ Open
https://www.readbyqxmd.com/read/28905421/exercise-to-preserve-%C3%AE-cell-function-in-recent-onset-type-1-diabetes-mellitus-extod-a-randomized-controlled-pilot-trial
#10
P Narendran, N Jackson, A Daley, D Thompson, K Stokes, S Greenfield, M Charlton, M Curran, T P J Solomon, A Nouwen, S I Lee, A R Cooper, M Mostazir, R S Taylor, A Kennedy, R C Andrews
AIM: Residual β-cell function is present at the time of diagnosis with Type 1 diabetes. Preserving this β-cell function reduces complications. We hypothesized that exercise preserves β-cell function in Type 1 diabetes and undertook a pilot trial to address the key uncertainties in designing a definitive trial to test this hypothesis. METHODS: A randomized controlled pilot trial in adults aged 16-60 years diagnosed with Type 1 diabetes within the previous 3 months was undertaken...
September 14, 2017: Diabetic Medicine: a Journal of the British Diabetic Association
https://www.readbyqxmd.com/read/28901220/biomarkers-of-cardiometabolic-health-are-associated-with-body-composition-characteristics-but-not-physical-activity-in-persons-with-spinal-cord-injury
#11
Tom E Nightingale, Jean-Philippe Walhin, Dylan Thompson, James Lj Bilzon
Objective To examine (i) the associations between physical activity dimensions, cardiorespiratory fitness and body composition and, (ii) the associations between physical activity dimensions, cardiorespiratory fitness, body composition and biomarkers of cardiometabolic health in persons with spinal cord injury (SCI). Methods A cross-sectional prospective cohort study with 7-day follow-up was conducted. Body composition, cardiorespiratory fitness and biomarkers of cardiometabolic health were measured in thirty-three participants with SCI (> 1 year post injury)...
September 13, 2017: Journal of Spinal Cord Medicine
https://www.readbyqxmd.com/read/28900406/neural-representation-a-survey-based-analysis-of-the-notion
#12
Oscar Vilarroya
The word representation (as in "neural representation"), and many of its related terms, such as to represent, representational and the like, play a central explanatory role in neuroscience literature. For instance, in "place cell" literature, place cells are extensively associated with their role in "the representation of space." In spite of its extended use, we still lack a clear, universal and widely accepted view on what it means for a nervous system to represent something, on what makes a neural activity a representation, and on what is re-presented...
2017: Frontiers in Psychology
https://www.readbyqxmd.com/read/28899366/effects-of-physical-activity-calorie-expenditure-pace-labeling-study-design-and-baseline-sample-characteristics
#13
Anthony J Viera, Laura Tuttle, Emily Olsson, Julie Gras-Najjar, Ziya Gizlice, Derek Hales, Laura Linnan, Feng-Chang Lin, Seth M Noar, Alice Ammerman
BACKGROUND: Obesity and physical inactivity are responsible for more than 365,000 deaths per year and contribute substantially to rising healthcare costs in the US, making clear the need for effective public health interventions. Calorie labeling on menus has been implemented to guide consumer ordering behaviors, but effects on calories purchased has been minimal. METHODS: In this project, we tested the effect of physical activity calorie expenditure (PACE) food labels on actual point-of-decision food purchasing behavior as well as physical activity...
September 12, 2017: BMC Public Health
https://www.readbyqxmd.com/read/28898295/relationships-between-sleep-duration-physical-activity-and-body-mass-index-in-young-new-zealanders-an-isotemporal-substitution-analysis
#14
Borja Del Pozo-Cruz, Nicholas Gant, Jesús Del Pozo-Cruz, Ralph Maddison
BACKGROUND: The evidence regarding the unique effect of sedentary behaviour on obesity among children is unclear. Moreover, the effect of substituting sedentary behaviour with physical activity of different intensities on the body composition of children has received limited empirical study. OBJECTIVE: To examine the mathematical effects on Body Mass Index (BMI) of substituting sedentary behaviours with physical activities of different intensities on children and youth aged 5-14 years old in New Zealand...
2017: PloS One
https://www.readbyqxmd.com/read/28895904/effect-of-sex-and-body-mass-index-on-children-s-physical-activity-intensity-during-free-play-at-an-indoor-soft-play-center-an-exploratory-study
#15
Michelle A Jones
Background: Indoor soft play can provide a safe but exciting physical activity opportunity regardless of environmental conditions. Relatively little is known about the quality or quantity of physical activity engaged in by children during indoor free soft play. The aim of this study was to evaluate the contribution indoor free soft play can make in enabling children to meet physical activity guidelines and to evaluate the effects of sex and body mass index category. Methods: Seventy-two boys and girls aged five to 10 years engaged in un-controlled indoor free soft play with a mean duration of 120...
September 12, 2017: International Journal of Environmental Research and Public Health
https://www.readbyqxmd.com/read/28891512/decoding-of-visual-activity-patterns-from-fmri-responses-using-multivariate-pattern-analyses-and-convolutional-neural-network
#16
Raheel Zafar, Nidal Kamel, Mohamad Naufal, Aamir Saeed Malik, Sarat C Dass, Rana Fayyaz Ahmad, Jafri M Abdullah, Faruque Reza
Decoding of human brain activity has always been a primary goal in neuroscience especially with functional magnetic resonance imaging (fMRI) data. In recent years, Convolutional neural network (CNN) has become a popular method for the extraction of features due to its higher accuracy, however it needs a lot of computation and training data. In this study, an algorithm is developed using Multivariate pattern analysis (MVPA) and modified CNN to decode the behavior of brain for different images with limited data set...
2017: Journal of Integrative Neuroscience
https://www.readbyqxmd.com/read/28882818/prospective-association-of-physical-activity-and-heart-failure-hospitalizations-among-black-adults-with-normal-ejection-fraction-the-jackson-heart-study
#17
Patrick Koo, Annie Gjelsvik, Gaurav Choudhary, Wen-Chih Wu, Wei Wang, F Dennis McCool, Charles B Eaton
BACKGROUND: Given high rates of obesity, hypertension, and diabetes mellitus, black persons are at risk to develop heart failure. The association of moderate to vigorous physical activity (MVPA) and heart failure in black adults is underresearched. The purpose of this study was to explore whether greater MVPA was associated with lower risk of heart failure hospitalizations (HFHs) among black adults with normal ejection fractions. METHODS AND RESULTS: We performed a prospective analysis of 4066 black adults who participated in the Jackson Heart Study and who had physical activity measured, had normal ejection fraction on 2-dimensional echocardiograms, and were followed for 7 years for incident HFH...
September 7, 2017: Journal of the American Heart Association
https://www.readbyqxmd.com/read/28882152/impact-of-the-supporting-physical-activity-in-the-childcare-environment-space-intervention-on-preschoolers-physical-activity-levels-and-sedentary-time-a-single-blind-cluster-randomized-controlled-trial
#18
Patricia Tucker, Leigh M Vanderloo, Andrew M Johnson, Shauna M Burke, Jennifer D Irwin, Anca Gaston, Molly Driediger, Brian W Timmons
BACKGROUND: Physical activity levels among preschoolers in childcare are low and sedentary time high. The Supporting Physical Activity in the Childcare Environment (SPACE) intervention had three components: 1. portable play equipment; 2. staff training; and, 3. modified outdoor playtime (i.e., shorter, more frequent periods). This study aimed to examine the effectiveness of the SPACE intervention on preschoolers' physical activity levels and sedentary time during childcare hours (compared to standard care)...
September 7, 2017: International Journal of Behavioral Nutrition and Physical Activity
https://www.readbyqxmd.com/read/28882121/evaluation-of-a-peer-education-program-on-student-leaders-energy-balance-related-behaviors
#19
B C Foley, V A Shrewsbury, L L Hardy, V M Flood, K Byth, S Shah
BACKGROUND: Few studies have reported energy balance-related behavior (EBRB) change for peer leaders delivering health promotion programs to younger students in secondary schools. Our study assessed the impact of the Students As LifeStyle Activists (SALSA) program on SALSA peer leaders' EBRBs, and their intentions regarding these behaviors. METHODS: We used a pre-post study design to assess changes in EBRBs and intentions of Year 10 secondary school students (15-16 year olds) who volunteered to be peer leaders to deliver the SALSA program to Year 8 students (13-14 year olds)...
September 7, 2017: BMC Public Health
https://www.readbyqxmd.com/read/28879071/an-examination-of-compensation-effects-in-accelerometer-measured-occupational-and-non-occupational-physical-activity
#20
Jennifer L Gay, David M Buchner, Jessalyn Smith, Chunla He
Self-report data suggests a large proportion of total physical activity (PA) occurs at work. However, adults with higher levels of occupational PA may compensate by engaging in less non-occupational PA. The study aims were to 1) estimate the intensity, volume, and duration of PA in American adults that occurs at work, and 2) determine if those more active at work are less active outside of work. A cross-sectional sample of full-time employed adults (N = 510) was recruited from Georgia city and county governments in 2013-2015...
December 2017: Preventive Medicine Reports
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