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https://www.readbyqxmd.com/read/28220040/associations-between-physical-activity-and-bmi-body-fatness-and-visceral-adiposity-in-overweight-or-obese-latino-and-non-latino-adults
#1
N Cameron, J Godino, J F Nichols, D Wing, L Hill, K Patrick
BACKGROUND/OBJECTIVES: Although several studies have reported associations between moderate to vigorous physical activity (MVPA), body fatness, and visceral adipose tissue (VAT), the extent to which associations differ among Latinos and non-Latinos remains unclear. The present study evaluated the associations between body composition and MVPA in Latino and non-Latino adults. SUBJECTS/METHODS: An exploratory, cross-sectional analysis was conducted using baseline data collected from 298 overweight adults enrolled in a 12-month randomized controlled trial that tested the efficacy of text messaging to improve weight loss...
February 21, 2017: International Journal of Obesity: Journal of the International Association for the Study of Obesity
https://www.readbyqxmd.com/read/28212449/energy-intake-and-energy-expenditure-of-pre-professional-female-contemporary-dancers
#2
Meghan A Brown, Glyn Howatson, Edel Quin, Emma Redding, Emma J Stevenson
Many athletes in aesthetic and weight dependent sports are at risk of energy imbalance. However little is known about the exercise and eating behaviours of highly trained dance populations. This investigation sought to determine the energy intake and energy expenditure of pre-professional female contemporary dancers. Twenty-five female contemporary dance students completed the study. Over a 7-day period, including five week days (with scheduled dance training at a conservatoire) and two weekend days (with no scheduled dance training at the conservatoire), energy intake (self-reported weighed food diary and 24 h dietary recall) and expenditure (tri-axial accelerometry) were recorded...
2017: PloS One
https://www.readbyqxmd.com/read/28212075/towards-photoplethysmography-based-estimation-of-instantaneous-heart-rate-during-physical-activity
#3
Delaram Jarchi, Alex Casson
OBJECTIVE: Recently numerous methods have been proposed for estimating average heart rate using photoplethysmography (PPG) during physical activity, overcoming the significant interference that motion causes in PPG traces. We propose a new algorithm framework for extracting instantaneous heart rate from wearable PPG and ECG signals to provide an estimate of heart rate variability during exercise. METHODS: For ECG signals we propose a new spectral masking approach which modifies a particle filter tracking algorithm, and for PPG signals constrains the instantaneous frequency obtained from the Hilbert transform to a region of interest around a candidate heart rate measure...
February 13, 2017: IEEE Transactions on Bio-medical Engineering
https://www.readbyqxmd.com/read/28196848/gps-based-exposure-to-greenness-and-walkability-and-accelerometry-based-physical-activity
#4
Peter James, Jaime E Hart, J Aaron Hipp, Jonathan Mitchell, Jacqueline Kerr, Philip M Hurvitz, Karen Glanz, Francine Laden
BACKGROUND: Physical inactivity is a risk factor for cancer that may be influenced by environmental factors. Indeed, dense and well-connected built environments and environments with natural vegetation may create opportunities for higher routine physical activity. However, studies have focused primarily on residential environments to define exposure and self-reported methods to estimate physical activity. The current study explores the momentary association between minute-level global positioning systems (GPS)-based greenness exposure and time-matched objectively measured physical activity...
February 14, 2017: Cancer Epidemiology, Biomarkers & Prevention
https://www.readbyqxmd.com/read/28188586/increasing-physical-activity-through-principles-of-habit-formation-in-new-gym-members-a-randomized-controlled-trial
#5
Navin Kaushal, Ryan E Rhodes, John C Spence, John T Meldrum
BACKGROUND: The promotion of physical activity (PA) is paramount to public health, yet interventions in the social cognitive tradition have yielded negligible improvements. The limited progression may be due to an overreliance on intention as the proximal determinant of behavior and a lack of consideration of implicit/automatic processes. The purpose of this study was to examine the impact of a habit formation intervention on PA over 8 weeks in a two-arm parallel design, randomized controlled trial...
February 10, 2017: Annals of Behavioral Medicine: a Publication of the Society of Behavioral Medicine
https://www.readbyqxmd.com/read/28186937/is-prolonged-sitting-at-work-associated-with-the-time-course-of-neck-shoulder-pain-a-prospective-study-in-danish-blue-collar-workers
#6
David M Hallman, Nidhi Gupta, Marina Heiden, Svend Erik Mathiassen, Mette Korshøj, Marie Birk Jørgensen, Andreas Holtermann
OBJECTIVES: This study aimed to determine the extent to which objectively measured sitting time at work is associated with the course of neck-shoulder pain across 1 year in blue-collar workers. METHODS: Data were analysed from 625 blue-collar workers in the Danish PHysical ACTivity cohort with Objective measurements (DPHACTO) cohort study (2012-2013). Objective data on sitting time were collected at baseline using accelerometry. Self-reported pain intensity (numeric rating scale 0-10) in the neck-shoulder region was registered for 1 year using repeated text messages (14 in total)...
November 10, 2016: BMJ Open
https://www.readbyqxmd.com/read/28186099/the-effect-of-increasing-risk-and-challenge-in-the-school-playground-on-physical-activity-and-weight-in-children-a-cluster-randomised-controlled-trial-play
#7
V L Farmer, S M Williams, J I Mann, G Schofield, J C McPhee, R W Taylor
BACKGROUND: To investigate whether changing the play environment in primary schools to one that includes greater risk and challenge increases physical activity and reduces body mass index (BMI). SUBJECTS/METHODS: A two-year cluster randomised controlled trial was undertaken in 16 New Zealand schools (Years 1-8). Intervention schools (n=8) redesigned their play environments to encourage imaginative and independent free play by increasing opportunities for risk and challenge (e...
February 10, 2017: International Journal of Obesity: Journal of the International Association for the Study of Obesity
https://www.readbyqxmd.com/read/28180055/associations-among-physical-activity-screen-time-and-sleep-in-low-socioeconomic-status-urban-girls
#8
Cory J Greever, Matthew Ahmadi, John Sirard, Sofiya Alhassan
Insufficient sleep is associated with higher risk of poor health outcomes in low socioeconomic status (SES) urban elementary age girls. Decreased physical activity (PA) and increased screen time may be associated with poor sleep. This study examined if PA and screen time are associated with sleep in girls from a low SES urban community. Baseline data from 7 to 12 year-old girls (n = 55) from two interventions conducted in Springfield, MA between 2012 and 2015 were used. PA was measured via accelerometry for seven days...
March 2017: Preventive Medicine Reports
https://www.readbyqxmd.com/read/28178426/physical-activity-in-pediatric-pulmonary-arterial-hypertension-measured-by-accelerometry-a-candidate-clinical-endpoint
#9
Willemijn M H Zijlstra, Mark-Jan Ploegstra, Theresia Vissia-Kazemier, Marcus T R Roofthooft, Gideon du Marchie Sarvaas, Beatrijs Bartelds, Annette Rackowitz, Freek van den Heuvel, Hans L Hillege, Guy Plasqui, Rolf M F Berger
Rationale- The development of evidence-based treatment guidelines for pediatric pulmonary arterial hypertension (PAH) is hampered by lack of pediatric clinical trials. Trial-design is hampered by lack of a feasible clinical endpoint in this population. Objectives- To evaluate the use of accelerometry for measuring physical activity (PA) in pediatric PAH and to investigate its correlation with clinical disease severity markers. Methods- We included children from the Dutch National Network for Pediatric Pulmonary Hypertension...
February 8, 2017: American Journal of Respiratory and Critical Care Medicine
https://www.readbyqxmd.com/read/28174226/educator-engagement-and-interaction-and-children-s-physical-activity-in-early-childhood-education-and-care-settings-an-observational-study-protocol
#10
Karen L Tonge, Rachel A Jones, Markus Hagenbuchner, Tuc V Nguyen, Anthony D Okely
INTRODUCTION: The benefits of regular physical activity for children are significant. Previous research has addressed the quantity and quality of children's physical activity while in early childhood education and care (ECEC) settings, yet little research has investigated the social and physical environmental influences on physical activity in these settings. The outcomes of this study will be to measure these social and physical environmental influences on children's physical activity using a combination of a real-time location system (RTLS) (a closed system that tracks the location of movement of participants via readers and tags), accelerometry and direct observation...
February 7, 2017: BMJ Open
https://www.readbyqxmd.com/read/28173893/sleep-and-circadian-rhythm-disturbance-in-bipolar-disorder
#11
A J Bradley, R Webb-Mitchell, A Hazu, N Slater, B Middleton, P Gallagher, H McAllister-Williams, K N Anderson
BACKGROUND: Subjective reports of insomnia and hypersomnia are common in bipolar disorder (BD). It is unclear to what extent these relate to underlying circadian rhythm disturbance (CRD). In this study we aimed to objectively assess sleep and circadian rhythm in a cohort of patients with BD compared to matched controls. METHOD: Forty-six patients with BD and 42 controls had comprehensive sleep/circadian rhythm assessment with respiratory sleep studies, prolonged accelerometry over 3 weeks, sleep questionnaires and diaries, melatonin levels, alongside mood, psychosocial functioning and quality of life (QoL) questionnaires...
February 8, 2017: Psychological Medicine
https://www.readbyqxmd.com/read/28169566/physical-activity-throughout-adolescence-and-hba1c-in-early-adulthood-birth-cohort-study
#12
Priscila M Nakamura, Grégore I Mielke, Bernardo L Horta, Maria Cecília Assunção, Helen Gonçalves, Ana Mb Menezes, Fernando C Barros, Ulf Ekelund, Soren Brage, Fernando C Wehrmeister, Isabel O Oliveira, Pedro C Hallal
BACKGROUND: Physical inactivity is responsible for 7% of diabetes deaths worldwide, but little is known whether low levels of physical activity (PA) during adolescence increase the risk of diabetes in early adulthood. We evaluated the cross-sectional and longitudinal associations between PA throughout adolescence and HbA1c concentration in early adulthood. METHODS: HbA1c was measured by high performance liquid chromatography. PA was assessed by self-report at the ages of 11, 15 and 18 years and by accelerometry at the ages of 13 (sub-sample) and 18 years...
February 7, 2017: Journal of Physical Activity & Health
https://www.readbyqxmd.com/read/28167327/physical-activity-ameliorates-the-association-between-sedentary-behavior-and-cardiometabolic-risk-among-inpatients-with-schizophrenia-a-comparison-versus-controls-using-accelerometry
#13
Brendon Stubbs, Li-Jung Chen, Ming-Shun Chung, Po-Wen Ku
OBJECTIVE: A lack of clarity exists regarding the relationship between objectively measured physical activity (PA) and sedentary behavior (SB) and cardiometabolic outcomes in people with schizophrenia. We conducted a large study investigating the independent relationships of PA and SB among inpatients with schizophrenia versus healthy controls (HCs). METHODS: A cross sectional study including 199 inpatients with schizophrenia (mean age 44.0years, mean illness duration 23...
January 20, 2017: Comprehensive Psychiatry
https://www.readbyqxmd.com/read/28166867/does-a-dynamic-chair-increase-office-workers-movements-results-from-a-combined-laboratory-and-field-study
#14
Wilhelmus J A Grooten, Björn O Äng, Maria Hagströmer, David Conradsson, Håkan Nero, Erika Franzén
PURPOSE: Dynamic chairs have the potential to facilitate movements that could counteract health problems associated with sedentary office work. This study aimed to evaluate whether a dynamic chair can increase movements during desk-based office work. METHODS: Fifteen healthy subjects performed desk-based office work using a dynamic office chair and compared to three other conditions in a movement laboratory. In a field study, the dynamic office chair was studied during three working days using accelerometry...
April 2017: Applied Ergonomics
https://www.readbyqxmd.com/read/28159535/wrist-worn-triaxial-accelerometry-predicts-the-energy-expenditure-of-non-vigorous-daily-physical-activities
#15
Worawan Sirichana, Brett A Dolezal, Eric V Neufeld, Xiaoyan Wang, Christopher B Cooper
OBJECTIVES: Triaxial accelerometry is commonly used to estimate oxygen uptake (VO2) and energy expenditure in health and fitness studies. We tested the correlation of a triaxial accelerometer in terms of a summation of vector magnitudes with gravity subtracted (SVMgs) and measured VO2 for different daily physical activities. DESIGN: Original research, cross-sectional. METHODS: Twenty volunteers wore a triaxial accelerometer on both wrists while performing 12 assigned daily physical activities for 6min for each activity...
January 25, 2017: Journal of Science and Medicine in Sport
https://www.readbyqxmd.com/read/28153018/physical-activity-levels-objectively-measured-among-older-adults-a-population-based-study-in-a-southern-city-of-brazil
#16
Virgílio Viana Ramires, Fernando César Wehrmeister, Andrea Wendt Böhm, Leony Galliano, Ulf Ekelund, Soren Brage, Inácio Crochemore Mohnsam da Silva
BACKGROUND: Low levels of physical activity are currently observed in all age groups around the world. Among older adults physical activity is even lower, potentially influencing quality of life, incidence of diseases and premature mortality. The aim of this study was to describe objectively measured physical activity levels among older adults residents in a Southern city of Brazil. METHODS: A population-based study was carried out including people aged 60+ years living in the urban area of Pelotas...
February 2, 2017: International Journal of Behavioral Nutrition and Physical Activity
https://www.readbyqxmd.com/read/28137918/physical-activity-is-increased-by-a-12-week-semiautomated-telecoaching-programme-in-patients-with-copd-a-multicentre-randomised-controlled-trial
#17
H Demeyer, Z Louvaris, A Frei, R A Rabinovich, C de Jong, E Gimeno-Santos, M Loeckx, S C Buttery, N Rubio, T Van der Molen, N S Hopkinson, I Vogiatzis, M A Puhan, J Garcia-Aymerich, M I Polkey, T Troosters
RATIONALE: Reduced physical activity (PA) in patients with COPD is associated with a poor prognosis. Increasing PA is a key therapeutic target, but thus far few strategies have been found effective in this patient group. OBJECTIVES: To investigate the effectiveness of a 12-week semiautomated telecoaching intervention on PA in patients with COPD in a multicentre European randomised controlled trial. METHODS: 343 patients from six centres, encompassing a wide spectrum of disease severity, were randomly allocated to either a usual care group (UCG) or a telecoaching intervention group (IG) between June and December 2014...
January 30, 2017: Thorax
https://www.readbyqxmd.com/read/28118871/sleep-assessment-in-large-cohort-studies-with-high-resolution-accelerometers
#18
REVIEW
Melanie Zinkhan, Jan W Kantelhardt
Accelerometry can be a practical replacement for polysomnography in large observational studies. This review discusses the need for sleep characterization in large observational studies, exemplified by the practices of the ongoing German National Cohort study. After brief descriptions of the physical principles and state-of-the-art accelerometer devices and an overview of public data analysis algorithms for sleep-wake differentiation, we demonstrate that the spectral properties of acceleration data provide additional features that can be exploited...
December 2016: Sleep Medicine Clinics
https://www.readbyqxmd.com/read/28114919/objectively-measured-sedentary-behaviour-and-moderate-and-vigorous-physical-activity-in-different-school-subjects-a-cross-sectional-study
#19
Kerli Mooses, Katrin Mägi, Eva-Maria Riso, Maarja Kalma, Priit Kaasik, Merike Kull
BACKGROUND: Evidence shows the positive influence of moderate and vigorous physical activity (MVPA) and negative influence of sedentary time on health and academic achievement. Although schools can significantly contribute to overall physical activity, little is known about MVPA and sedentary behaviour in different school subjects in different grades. METHODS: Physical activity of 646 students from 18 schools (94 classes) and from three school stages (grades 1-9, aged 7-16) was measured with accelerometry for 5 school days...
January 23, 2017: BMC Public Health
https://www.readbyqxmd.com/read/28109457/accelerometry-assessed-latent-class-patterns-of-physical-activity-and-sedentary-behavior-with-mortality
#20
Kelly R Evenson, Amy H Herring, Fang Wen
INTRODUCTION: Latent class analysis provides a method for understanding patterns of physical activity and sedentary behavior. This study explored the association of accelerometer-assessed patterns of physical activity/sedentary behavior with all-cause mortality. METHODS: The sample included 4,510 U.S. National Health and Nutrition Examination Survey participants aged ≥40 years enrolled in 2003-2006 with mortality follow-up through 2011. Participants used a hip-worn accelerometer for 1 week that provided minute-by-minute information on physical activity/sedentary behavior...
February 2017: American Journal of Preventive Medicine
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