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Yue Liao, Chih-Ping Chou, Jimi Huh, Adam Leventhal, Genevieve Dunton
Current knowledge about the relationship of physical activity with acute affective and physical feeling states is informed largely by lab-based studies, which have limited generalizability to the natural ecology. This study used ecological momentary assessment to assess subjective affective and physical feeling states in free-living settings across 4 days from 110 non-physically active adults (Age M = 40.4, SD = 9.7). Light physical activity (LPA) and moderate-to-vigorous physical activity (MVPA) were measured objectively by an accelerometer...
October 20, 2016: Journal of Behavioral Medicine
Paul D Loprinzi, Allison Nooe
Background: No study has evaluated the effects of executive function on follow-up sedentary behavior, which was this study's purpose. Methods: A longitudinal design was employed among 18 young adult college students (Mage = 23.7 years; 88.9% female). Accelerometer-determined sedentary behavior and physical activity, along with executive function, were assessed at baseline. Approximately 8 weeks later, re-assessment of accelerometer-determined sedentary behavior and physical activity occurred. Executive function was assessed using the Parametric Go/No-Go (PGNG) computer task...
2016: Health Promotion Perspectives
William R Boyer, Dana L Wolff-Hughes, David R Bassett, James R Churilla, Eugene C Fitzhugh
INTRODUCTION: The objective of this study was to compare the associations of accelerometer-derived total activity counts per day and minutes of bouted moderate to vigorous physical activity (MVPA) with insulin resistance. METHODS: The sample included 2,394 adults (aged ≥20 y) from the 2003-2006 National Health and Nutrition Examination Survey. Time spent in MVPA, measured by using 2 cutpoints (≥2,020 counts/min [MVPA2,020] and ≥760 counts/min [MVPA760]), was calculated for bouts of at least 8 to 10 minutes...
October 20, 2016: Preventing Chronic Disease
Wendy Yajun Huang, Stephen Heung-Sang Wong, Gang He, J O Salmon
PURPOSE: This study examined the prospective associations of reallocating time spent in different types of sedentary behavior, physical activity, and sleep with body mass index (BMI) in children using isotemporal substitution analysis. METHODS: Chinese children in grades 1-3 were recruited to a cohort study in 2009 and were followed up over a 2-yr period. Reports were gathered from the parents on children's sedentary behavior, sleep duration, and sociodemographic variables...
November 2016: Medicine and Science in Sports and Exercise
Javier Benítez-Porres, José Ramón Alvero-Cruz, Luis B Sardinha, Iván López-Fernández, Elvis A Carnero
INTRODUCTION: The Physical Activity Questionnaire for children and adolescents (PAQ-C & PAQ-A) has been widely used in research and field settings. However, there is a lack of information about its final score meaning. OBJECTIVE: To determine PAQ-C and PAQ-A score cut-off values using physical activity (PA) thresholds objectively measured as reference criteria. METHODS: 146 children (n = 83 boys, n = 63 girls) and 234 adolescents (n = 115 boys, n = 119 girls) participated in this study...
September 20, 2016: Nutrición Hospitalaria: Organo Oficial de la Sociedad Española de Nutrición Parenteral y Enteral
Artur Direito, Eliana Carraça, Jonathan Rawstorn, Robyn Whittaker, Ralph Maddison
BACKGROUND: mHealth programs offer potential for practical and cost-effective delivery of interventions capable of reaching many individuals. PURPOSE: To (1) compare the effectiveness of mHealth interventions to promote physical activity (PA) and reduce sedentary behavior (SB) in free-living young people and adults with a comparator exposed to usual care/minimal intervention; (2) determine whether, and to what extent, such interventions affect PA and SB levels and (3) use the taxonomy of behavior change techniques (BCTs) to describe intervention characteristics...
October 18, 2016: Annals of Behavioral Medicine: a Publication of the Society of Behavioral Medicine
Jonathan A Mitchell, Marsha Dowda, Russell R Pate, Katarzyna Kordas, Karsten Froberg, Luís B Sardinha, Elin Kolle, Angela Page
PURPOSE: We aimed to determine if moderate-to-vigorous physical activity (MVPA) and sedentary behavior (SB) were independently associated with body mass index (BMI) and waist circumference (WC) in children and adolescents. METHODS: Data from the International Children's Accelerometry Database (ICAD) were used to address our objectives (N=11,115; 6-18y; 51% female). We calculated age and gender specific body mass index (BMI) and waist circumference (WC) Z-scores and used accelerometry to estimate MVPA and total SB...
October 17, 2016: Medicine and Science in Sports and Exercise
Jing-Jing Wang, Tom Baranowski, Patrick W C Lau, Tzu-An Chen, Shu-Ge Zhang
This study aimed to explore the associations among psychological correlates and physical activity (PA) in Chinese children and to further examine whether these associations varied by different PA measures. PA self-efficacy, motivation, and preference were reported in 449 8-13-year-old Chinese children (252 males). Moderate- to vigorous- intensity PA (MVPA) was measured by the Physical Activity Questionnaire for Older Children (PAQ-C) and with an ActiGraph GT3X accelerometer. Correlations and hierarchical regressions were performed to explore their associations...
October 13, 2016: International Journal of Environmental Research and Public Health
Sheri J Hartman, Shira I Dunsiger, Beth C Bock, Britta A Larsen, Sarah Linke, Dori Pekmezi, Becky Marquez, Kim M Gans, Andrea S Mendoza-Vasconez, Bess H Marcus
Spanish-speaking Latinas have some of the lowest rates of meeting physical activity guidelines in the U.S. and are at high risk for many related chronic diseases. The purpose of the current study was to examine the maintenance of a culturally and individually-tailored Internet-based physical activity intervention for Spanish-speaking Latinas. Inactive Latinas (N  =  205) were randomly assigned to a 6-month Tailored Physical Activity Internet Intervention or a Wellness Contact Control Internet Group, with a 6-month follow-up...
October 17, 2016: Journal of Behavioral Medicine
Oline Anita Bjørkelund, Hanna Degerud, Elling Bere
BACKGROUND: Cycling and brisk-walking to work represents an opportunity to incorporate sustainable transport related moderate- to- vigorous physical activity (MVPA) into daily routine among adults, and thus, may make an important contributing to health. Despite the fact that walking and cycling is an option for many commuters and also brings a number of benefits, a considerable proportion of commuters choose to use other means of transport when cycling and walking would be a highly appropriate transport mode...
2016: Archives of Public Health, Archives Belges de Santé Publique
Kerstin Gerst Emerson, Jennifer Gay
The goals of this study were 1) to test the relative contribution of light-intensity and moderate-to-vigorous intensity physical activity (MVPA) to Cardiovascular Disease (CVD) risk in older adults, and 2) to examine the influence of ethnicity. We used pooled data from the 2003-2004 and 2005-2006 waves of the National Health and Nutritional Examination Survey (NHANES). The sample consisted of 1,171 White, Black and Mexican American adults aged 65 and older. Using ordinary least squares regression, we showed no statistically significant relationship between lower CVD risk with light intensity activity...
October 13, 2016: Journal of Aging and Physical Activity
Xinpei Ma, Chun-An Chou, Hiroki Sayama, Wanpracha Art Chaovalitwongse
Many neuroscience studies have been devoted to understand brain neural responses correlating to cognition using functional magnetic resonance imaging (fMRI). In contrast to univariate analysis to identify response patterns, it is shown that multi-voxel pattern analysis (MVPA) of fMRI data becomes a relatively effective approach using machine learning techniques in the recent literature. MVPA can be considered as a multi-objective pattern classification problem with the aim to optimize response patterns, in which informative voxels interacting with each other are selected, achieving high classification accuracy associated with cognitive stimulus conditions...
September 2016: Brain Informatics
Miaolin Fan, Chun-An Chou
Feature selection plays a key role in multi-voxel pattern analysis because functional magnetic resonance imaging data are typically noisy, sparse, and high-dimensional. Although the conventional evaluation criterion is the classification accuracy, selecting a stable feature set that is not sensitive to the variance in dataset may provide more scientific insights. In this study, we aim to investigate the stability of feature selection methods and test the stability-based feature selection scheme on two benchmark datasets...
September 2016: Brain Informatics
Rosenda Murillo, Kathryn J Reid, Elva M Arredondo, Jianwen Cai, Marc D Gellman, Nathan M Gotman, David X Marquez, Frank J Penedo, Alberto R Ramos, Phyllis C Zee, Martha L Daviglus
We examined associations of mild and moderate to severe obstructive sleep apnea (OSA; apnea-hypopnea index ≥5 and ≥15, respectively) with recommended amounts of moderate-vigorous physical activity (MVPA) or vigorous physical activity (VPA) and by type of activity (i.e., recreational, transportation, and work activity). The Hispanic Community Health Study/Study of Latinos (HCHS/SOL), a multicenter population-based study, enrolled individuals from 2008 to 2011 from four U.S. metropolitan areas (Bronx, New York; Chicago, Illinois; Miami, Florida; San Diego, California)...
October 13, 2016: Preventive Medicine
Catherine M Wright, Paula J Duquesnay, Stephanie Anzman-Frasca, Virginia R Chomitz, Kenneth Chui, Christina D Economos, Elizabeth G Langevin, Miriam E Nelson, Jennifer M Sacheck
BACKGROUND: Physical activity (PA) is critical to preventing childhood obesity and contributes to children's overall physical and cognitive health, yet fewer than half of all children achieve the recommended 60 min per day of moderate-to-vigorous physical activity (MVPA). Schools are an ideal setting to meeting PA guidelines, but competing demands and limited resources have impacted PA opportunities. The Fueling Learning through Exercise (FLEX) Study is a randomized controlled trial that will evaluate the impact of two innovative school-based PA programs on children's MVPA, cognitive function, and academic outcomes...
October 13, 2016: BMC Public Health
Jennifer Brunet, Katie E Gunnell, Pedro Teixeira, Catherine M Sabiston, Mathieu Bélanger
The objectives of this study were to examine if: (a) measures designed to assess satisfaction of competence, autonomy, and relatedness needs in physical activity contexts can represent both general and specific needs satisfaction, and (b) the specific needs are associated with concurrent moderate-to-vigorous intensity physical activity (MVPA) participation (Time 1) and MVPA participation four months later (Time 2), beyond general psychological need satisfaction (PNS). Data from 544 adolescents (Mage = 14.1 years, SD = 0...
October 13, 2016: Journal of Sport & Exercise Psychology
Katie E Gunnell, Jennifer Brunet, Catherine Sabiston, Mathieu Bélanger
Despite research attention towards understanding relationships between psychological need satisfaction (PNS), moderate-to-vigorous intensity physical activity (MVPA), and health-related quality of life (HRQoL), methodological limitations make it difficult to establish reciprocal and mediating effects. Reciprocal relationships between PNS and MVPA were examined over four years and their effects on adolescents' change in dimensions of HRQoL were examined. Self-reported data were collected from 932 adolescents (Mage=10...
October 13, 2016: Journal of Sport & Exercise Psychology
Adama Diouf, Mbeugué Thiam, Nicole Idohou-Dossou, Ousmane Diongue, Ndé Mégné, Khady Diallo, Pape Malick Sembène, Salimata Wade
Background: Physical inactivity and sedentary lifestyles are major risk factors of childhood obesity. This study aimed to measure physical activity (PA) levels by accelerometer and Physical Activity Questionnaire for Older Children (PAQ-C) among Senegalese school children and the relation with Body Mass Index (BMI) and body composition. Methodology: 156 pupils 8-11 years old were randomly selected in four elementary public schools of Dakar. BMI z-score was used to categorize children according to their weight status...
October 10, 2016: International Journal of Environmental Research and Public Health
Şükrü Alpan Cinemre
The first aim of this study was to determine the intensity of physical activity (PA) by an objective measurement method - using an accelerometer in Turkish prepubertal boys. The second aim of this study was to correlate the intensity of PA with body mass index (BMI). For this aim 40 boys were participated in this study. PA levels were measured by using GT3X-bt accelerometer for 5 consecutive school days. Mean BMI was found 17.56 ± 2.39. 101.20 ± 17.82 minutes was found as moderate to vigorous physical activity (MVPA) per school day...
November 2015: Turkish Journal of Pediatrics
Hannah Arem, Ruth M Pfeiffer, Steven C Moore, Louise A Brinton, Charles E Matthews
PURPOSE: Endometrial cancer (EC) survivors are the second largest group of female cancer survivors in the USA, with high prevalence of obesity and physical inactivity. While higher pre-diagnosis body mass index (BMI) has been associated with higher all-cause and disease-specific mortality, pre-diagnosis physical activity has shown mixed evidence of an association with mortality. However, the association between BMI, physical activity, and TV viewing measured after diagnosis and mortality risk among EC survivors is unknown...
October 11, 2016: Cancer Causes & Control: CCC
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