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https://www.readbyqxmd.com/read/28081251/physical-activity-and-sedentary-behaviors-modify-the-association-between-melanocortin-4-receptor-gene-variant-and-obesity-in-chinese-children-and-adolescents
#1
Jie-Yun Song, Qi-Ying Song, Shuo Wang, Jun Ma, Hai-Jun Wang
Effects of MC4R variants in previous Chinese population studies were inconsistent. Gene-environment interactions might influence the effect of MC4R variants on obesity, which was still unclear. We performed the study to clarify the association of variants near MC4R gene with obesity-related phenotypes and gene-environment interactions in Chinese children and adolescents. Two common variants (rs12970134 and rs17782313) near MC4R were genotyped in 2179 children and adolescents aged 7-18 years in Beijing of China...
2017: PloS One
https://www.readbyqxmd.com/read/28081249/measuring-physical-activity-with-hip-accelerometry-among-u-s-older-adults-how-many-days-are-enough
#2
Masha Kocherginsky, Megan Huisingh-Scheetz, William Dale, Diane S Lauderdale, Linda Waite
INTRODUCTION: Accelerometers are increasingly used in research. Four to 7 days of monitoring is preferred to estimate average activity but may be burdensome for older adults. We aimed to investigate: 1) 7-day accelerometry protocol adherence, 2) demographic predictors of adherence, 3) day of the week effect, and 4) average activity calculated from 7 versus fewer days among older adults. METHODS: We used the 2003-2006 older adult hip accelerometry data from the National Health and Nutrition Examination Survey (NHANES) sample...
2017: PloS One
https://www.readbyqxmd.com/read/28081150/the-association-of-birth-weight-and-infant-growth-with-energy-balance-related-behavior-a-systematic-review-and-best-evidence-synthesis-of-human-studies
#3
Arend W van Deutekom, Mai J M Chinapaw, Elise P Jansma, Tanja G M Vrijkotte, Reinoud J B J Gemke
BACKGROUND: Suboptimal prenatal and early postnatal growths are associated with obesity in later life, but the underlying mechanisms are unknown. The aim of this study was to systematically review the literature that reports on the longitudinal association of (i) birth size or (ii) infant growth with later (i) energy intake, (ii) eating behaviors, (iii) physical activity or (iv) sedentary behavior in humans. METHODS: A comprehensive search of MEDLINE, EMBASE, PsycINFO and The Cochrane Library was conducted to identify relevant publications...
2017: PloS One
https://www.readbyqxmd.com/read/28078066/use-it-or-lose-it-tonic-activity-of-slow-motoneurons-promotes-their-survival-and-preferentially-increases-slow-fiber-type-groupings-in-muscles-of-old-lifelong-recreational-sportsmen
#4
Simone Mosole, Ugo Carraro, Helmut Kern, Stefan Loefler, Sandra Zampieri
: Histochemistry, immuno-histochemistry, gel electrophoresis of single muscle fibers and electromyography of aging muscles and nerves suggest that: i) denervation contributes to muscle atrophy, ii) impaired mobility accelerates the process, and iii) lifelong running protects against loss of motor units. Recent corroborating results on the muscle effects of Functional Electrical Stimulation (FES) of aged muscles will be also mentioned, but we will in particular discuss how and why a lifelong increased physical activity sustains reinnervation of muscle fibers...
September 15, 2016: European Journal of Translational Myology
https://www.readbyqxmd.com/read/28077722/higher-heart-rate-variability-is-associated-with-ventromedial-prefrontal-cortex-activity-and-increased-resistance-to-temptation-in-dietary-self-control-challenges
#5
Silvia U Maier, Todd A Hare
: Higher levels of self-control in decision making have been linked to better psychosocial and physical health. A similar link to health outcomes has been reported for heart-rate variability (HRV), a marker of physiological flexibility. Here, we sought to link these two, largely separate, research domains by testing the hypothesis that greater HRV would be associated with better dietary self-control in humans. Specifically, we examined whether total HRV at sedentary rest (measured as the SD of normal-to-normal intervals) can serve as a biomarker for the neurophysiological adaptability that putatively underlies self-controlled behavior...
January 11, 2017: Journal of Neuroscience: the Official Journal of the Society for Neuroscience
https://www.readbyqxmd.com/read/28076591/urban-versus-rural-lifestyle-in-adolescents-associations-between-environment-physical-activity-levels-and-sedentary-behavior
#6
Manuela Ferreira Regis, Luciano Machado Ferreira Tenório de Oliveira, Ana Raquel Mendes Dos Santos, Ameliane da Conceição Reubens Leonidio, Paula Rejane Beserra Diniz, Clara Maria Silvestre Monteiro de Freitas
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...
October 2016: Einstein
https://www.readbyqxmd.com/read/28074890/longitudinal-association-of-leisure-time-physical-activity-and-sedentary-behaviors-with-body-weight-among-chinese-adults-from-china-health-and-nutrition-survey-2004-2011
#7
C Su, X F Jia, Z H Wang, H J Wang, Y F Ouyang, B Zhang
BACKGROUND/OBJECTIVES: Present study aims to longitudinally explore independent association of physical activity and sedentary behaviors with body weight. SUBJECTS/METHODS: This study included 15050 adults who have complete demographic and dietary data, leisure time physical activity (LTPA) and sedentary behavior evaluations, anthropometric measurements from longitudinal data of China Health and Nutrition Survey 2004-2011. Three-level mixed-effects linear and logistic regression models were performed for association analysis...
January 11, 2017: European Journal of Clinical Nutrition
https://www.readbyqxmd.com/read/28074683/objectively-measured-sedentary-behavior-and-brain-volumetric-measurements-in-multiple-sclerosis
#8
Rachel E Klaren, Elizabeth A Hubbard, Nathan C Wetter, Bradley P Sutton, Robert W Motl
AIM: This study examined the association between sedentary behavior patterns and whole brain gray matter (GM), white matter (WM) and subcortical GM structures in persons with multiple sclerosis (MS). METHODS: 36 persons with MS wore an accelerometer and underwent a brain MRI. Whole brain GM and WM and deep GM structures were calculated from 3D T1-weighted structural brain images. RESULTS: There were statistically significant (p < 0.01) and moderate or large associations between number of sedentary bouts/day and brain volume measures...
January 11, 2017: Neurodegenerative Disease Management
https://www.readbyqxmd.com/read/28069664/physical-activity-sedentary-behavior-and-symptoms-of-major-depression-in-middle-childhood
#9
Tonje Zahl, Silje Steinsbekk, Lars Wichstrøm
OBJECTIVE: The prospective relation between physical activity and Diagnostic and Statistical Manual of Mental Disorders-defined major depression in middle childhood is unknown, as is the stability of depression. We therefore aimed to (1) determine whether there are reciprocal relations between moderate-to-vigorous physical activity (MVPA) and sedentary behavior, on one hand, and Diagnostic and Statistical Manual of Mental Disorders, Fourth Edition defined symptoms of major depressive disorder, on the other and (2) assess the extent of stability in depressive symptoms from age 6 to 10 years...
January 9, 2017: Pediatrics
https://www.readbyqxmd.com/read/28069016/short-and-long-term-effectiveness-of-a-three-month-individualized-need-supportive-physical-activity-counseling-intervention-at-the-workplace
#10
Anass Arrogi, Astrid Schotte, An Bogaerts, Filip Boen, Jan Seghers
BACKGROUND: The objective of the present study was to evaluate the short- and long-term intervention and mediation effects of a 3-month individualized need-supportive physical activity (PA) counseling intervention on employees' PA and sedentary behavior. METHODS: Insufficiently active employees (n = 300; mean age 42 ± 9 years; 78% female) were recruited from a large pharmaceutical company in Flanders, Belgium. A quasi-experimental design was used in which the intervention group (N = 246) was recruited separately from the reference group (N = 54)...
January 9, 2017: BMC Public Health
https://www.readbyqxmd.com/read/28062274/reproducibility-of-accelerometer-assessed-physical-activity-and-sedentary-time
#11
Sarah Kozey Keadle, Eric J Shiroma, Masamitsu Kamada, Charles E Matthews, Tamara B Harris, I-Min Lee
INTRODUCTION: Accelerometers are used increasingly in large epidemiologic studies, but, given logistic and cost constraints, most studies are restricted to a single, 7-day accelerometer monitoring period. It is unknown how well a 7-day accelerometer monitoring period estimates longer-term patterns of behavior, which is critical for interpreting, and potentially improving, disease risk estimates in etiologic studies. METHODS: A subset of participants from the Women's Health Study (N=209; mean age, 70...
January 3, 2017: American Journal of Preventive Medicine
https://www.readbyqxmd.com/read/28058242/advertisements-for-children-s-entertainment-products-in-a-popular-parenting-magazine-sedentary-or-active
#12
Corey H Basch, Aleksandar Kecojevic, Valerie Cadorett, Charles E Basch
Background: The purpose of this study was to describe advertisements of children's entertainment products in a popular magazine, Parents, and to determine if they illustrated behavior that was physically active or sedentary. Methods: The sample was comprised of Parents magazines (January 2010 to December 2015). Coding involved determining if the advertisement was promoting sedentary or active behavior. Results: Nearly all of the 169 advertisements in the sample (n = 166; 97.6%) were for products that depicted sedentary behavior...
2017: Health Promotion Perspectives
https://www.readbyqxmd.com/read/28058238/sedentary-behavior-physical-activity-and-cardiorespiratory-fitness-on-leukocyte-telomere-length
#13
Meghan K Edwards, Paul D Loprinzi
Background: Emerging work is starting to investigate the cumulative effects of moderate-to-vigorous physical activity (MVPA), sedentary behavior and cardiorespiratory fitness on health. The objective of this study was to examine the cumulative and independent associations of MVPA, sedentary behavior and cardiorespiratory fitness on leukocyte telomere length (LTL). Methods: Data from the 1999-2002 National Health and Nutrition Examination Survey (NHANES) were used (N = 1868 adults 20+ years); analyzed in 2016...
2017: Health Promotion Perspectives
https://www.readbyqxmd.com/read/28057008/correlates-of-preschool-children-s-objectively-measured-physical-activity-and-sedentary-behavior-a-cross-sectional-analysis-of-the-splashy-study
#14
Einat A Schmutz, Claudia S Leeger-Aschmann, Thomas Radtke, Stefanie Muff, Tanja H Kakebeeke, Annina E Zysset, Nadine Messerli-Bürgy, Kerstin Stülb, Amar Arhab, Andrea H Meyer, Simone Munsch, Jardena J Puder, Oskar G Jenni, Susi Kriemler
BACKGROUND: Identifying ways to promote physical activity and decrease sedentary time during childhood is a key public health issue. Research on the putative influences on preschool children's physical activity (PA) and sedentary behavior (SB) is limited and has yielded inconsistent results. Our aim was to identify correlates of PA and SB in preschool children. METHODS: Cross-sectional data were drawn from the Swiss Preschoolers' Health Study (SPLASHY), a Swiss population-based cohort study...
January 5, 2017: International Journal of Behavioral Nutrition and Physical Activity
https://www.readbyqxmd.com/read/28056094/energy-cost-of-standing-in-a-multi-ethnic-cohort-are-energy-savers-a-minority-or-the-majority
#15
Cathríona R Monnard, Jennifer L Miles-Chan
BACKGROUND: The disease risks associated with sedentary behavior are now firmly established, and consequently there is much interest in methods of increasing low-intensity physical activity. In this context, it is a widely held belief that altering posture allocation can modify energy expenditure (EE) to impact upon body weight regulation and health. However, we recently showed the existence of two distinct phenotypes pertaining to the energy cost of standing-with the majority of a Caucasian cohort showing no sustained increase in EE during standing relative to sitting...
2017: PloS One
https://www.readbyqxmd.com/read/28052867/how-consumer-physical-activity-monitors-could-transform-human-physiology-research
#16
Stephen P Wright, Tyish S Hall Brown, Scott R Collier, Kathryn Sandberg
Sedentary lifestyle and lack of physical activity are well-established risk factors for chronic disease and adverse health outcomes. Thus there is enormous interest in measuring physical activity in biomedical research. Many consumer physical activity monitors, including Basis® Health Tracker, BodyMedia® Fit, DirectLife®, Fitbit® Flex, Fitbit One, Fitbit Zip, Garmin® Vivofit, Jawbone® UP, MisFit® Shine, Nike® FuelBand, Polar® Loop, Withings® Pulse O2, and others have accuracies similar to that of research-grade physical activity monitors for measuring steps...
January 4, 2017: American Journal of Physiology. Regulatory, Integrative and Comparative Physiology
https://www.readbyqxmd.com/read/28052820/disparities-in-obesity-physical-activity-rates-and-breast-cancer-survival
#17
M E Ford, G Magwood, E T Brown, K Cannady, M Gregoski, K D Knight, L L Peterson, R Kramer, A Evans-Knowell, D P Turner
The significantly higher breast cancer (BCa) mortality rates of African-American (AA) women compared to non-Hispanic (NHW) white women constitute a major US health disparity. Investigations have primarily focused on biological differences in tumors to explain more aggressive forms of BCa in AA women. The biology of tumors cannot be modified, yet lifestyle changes can mitigate their progression and recurrence. AA communities have higher percentages of obesity than NHWs and exhibit inefficient access to care, low socioeconomic status, and reduced education levels...
2017: Advances in Cancer Research
https://www.readbyqxmd.com/read/28052818/the-role-of-advanced-glycation-end-products-in-cancer-disparity
#18
D P Turner
While the socioeconomic and environmental factors associated with cancer disparity have been well documented, the contribution of biological factors is an emerging field of research. Established disparity factors such as low income, poor diet, drinking alcohol, smoking, and a sedentary lifestyle may have molecular effects on the inherent biological makeup of the tumor itself, possibly altering cell signaling events and gene expression profiles to profoundly alter tumor development and progression. Our understanding of the molecular and biological consequences of poor lifestyle is lacking, but such information may significantly change how we approach goals to reduce cancer incidence and mortality rates within minority populations...
2017: Advances in Cancer Research
https://www.readbyqxmd.com/read/28049752/behavioral-intervention-in-the-treatment-of-obesity-in-children-and-adolescents-implications-for-mexico
#19
Elissa Jelalian, E Whitney Evans
Pediatric obesity is a worldwide health epidemic affecting both developed and developing countries. Mexico ranks second to the United States in rates of pediatric obesity. Obesity among youth has immediate and long-term consequences on physical and psychosocial development, including cardiovascular, respiratory, and health-related quality of life. Eventual amelioration of this epidemic will require change at the level of the family and community, along with policy initiatives to support healthier eating and activity habits...
January 2017: Nutrition Reviews
https://www.readbyqxmd.com/read/28045193/support-and-sabotage-a-qualitative-study-of-social-influences-on-health-behaviors-among-rural-adults
#20
Urshila Sriram, Emily H Morgan, Meredith L Graham, Sara C Folta, Rebecca A Seguin
PURPOSE: Social environments exert an important influence on health behaviors, yet evidence from rural-specific contexts is limited. This study explored how social relationships influence health-related behaviors among midlife and older rural adults at increased risk of chronic disease. METHODS: Seventeen focus groups were conducted with 125 sedentary, overweight/obese adults (aged 40-91 years) residing in "medically underserved" rural Montana towns in 2014. Groups were stratified by age (40-64 and ≥65) and gender...
January 3, 2017: Journal of Rural Health
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