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https://www.readbyqxmd.com/read/28446180/physical-activity-when-riding-an-electric-assisted-bicycle
#1
Sveinung Berntsen, Lena Malnes, Aleksander Langåker, Elling Bere
BACKGROUND: The objectives of the present study were to compare time spent cycling, exercise intensity, and time spent in moderate- (MPA) and vigorous intensity physical activity (VPA) when cycling on an E-bike and a conventional bicycle on two "cycling-to-work" routes with differences in topography, defined as a hilly and a flat route. METHODS: Eight adults (23-54 years, two women) cycled outdoors on a conventional bicycle and an E-bike, on a flat (8.2 km) and a hilly (7...
April 26, 2017: International Journal of Behavioral Nutrition and Physical Activity
https://www.readbyqxmd.com/read/28438171/a-systematic-review-and-meta-analysis-of-moderate-to-vigorous-physical-activity-levels-in-secondary-school-physical-education-lessons
#2
REVIEW
Jenna L Hollis, Rachel Sutherland, Amanda J Williams, Elizabeth Campbell, Nicole Nathan, Luke Wolfenden, Philip J Morgan, David R Lubans, Karen Gillham, John Wiggers
BACKGROUND: Schools play an important role in physical activity promotion for adolescents. The systematic review aimed to determine the proportion of secondary (middle and high) school physical education (PE) lesson time that students spend in moderate to vigorous physical activity (MVPA), and to assess if MVPA was moderated by school level (middle and high school), type of physical activity measurement and type of PE activities. METHODS: A systematic search of nine electronic databases was conducted (PROSPERO2014:CRD42014009649)...
April 24, 2017: International Journal of Behavioral Nutrition and Physical Activity
https://www.readbyqxmd.com/read/28431740/getting-a-grip-on-reality-grasping-movements-directed-to-real-objects-and-images-rely-on-dissociable-neural-representations
#3
Erez Freud, Scott N Macdonald, Juan Chen, Derek J Quinlan, Melvyn A Goodale, Jody C Culham
In the current era of touchscreen technology, humans commonly execute visually guided actions directed to two-dimensional (2D) images of objects. Although real, three-dimensional (3D), objects and images of the same objects share high degree of visual similarity, they differ fundamentally in the actions that can be performed on them. Indeed, previous behavioral studies have suggested that simulated grasping of images relies on different representations than actual grasping of real 3D objects. Yet the neural underpinnings of this phenomena have not been investigated...
March 18, 2017: Cortex; a Journal Devoted to the Study of the Nervous System and Behavior
https://www.readbyqxmd.com/read/28429068/nicotine-deprivation-elevates-neural-representation-of-smoking-related-cues-in-object-sensitive-visual-cortex-a-proof-of-concept-study
#4
Anne Havermans, Onno C P van Schayck, Eric F P M Vuurman, Wim J Riedel, Job van den Hurk
OBJECTIVE: In the current study, we use functional magnetic resonance imaging (fMRI) and multi-voxel pattern analysis (MVPA) to investigate whether tobacco addiction biases basic visual processing in favour of smoking-related images. We hypothesize that the neural representation of smoking-related stimuli in the lateral occipital complex (LOC) is elevated after a period of nicotine deprivation compared to a satiated state, but that this is not the case for object categories unrelated to smoking...
April 21, 2017: Psychopharmacology
https://www.readbyqxmd.com/read/28427543/changes-in-physical-activity-and-sedentary-behaviour-following-pulmonary-rehabilitation-in-patients-with-copd
#5
Rafael Mesquita, Kenneth Meijer, Fabio Pitta, Helena Azcuna, Yvonne M J Goërtz, Johannes M N Essers, Emiel F M Wouters, Martijn A Spruit
A more profound investigation about the responses in activity levels following pulmonary rehabilitation (PR) in patients with COPD is needed. We aimed to describe groups of patients with COPD according to patterns of change in physical activity and sedentary behaviour following PR. 90 patients with COPD (60% male; mean age 67 ± 8; median FEV1 47 (32-62) %pred) completed a comprehensive PR programme. A triaxial accelerometer was used to assess the time in sedentary behaviour, light activities and moderate-to-vigorous physical activity (MVPA)...
May 2017: Respiratory Medicine
https://www.readbyqxmd.com/read/28427462/within-person-associations-of-young-adolescents-physical-activity-across-five-primary-locations-is-there-evidence-of-cross-location-compensation
#6
Jordan A Carlson, Tarrah B Mitchell, Brian E Saelens, Vincent S Staggs, Jacqueline Kerr, Lawrence D Frank, Jasper Schipperijn, Terry L Conway, Karen Glanz, Jim E Chapman, Kelli L Cain, James F Sallis
BACKGROUND: Youth are active in multiple locations, but it is unknown whether more physical activity in one location is associated with less in other locations. This cross-sectional study examines whether on days with more physical activity in a given location, relative to their typical activity in that location, youth had less activity in other locations (i.e., within-person associations/compensation). METHODS: Participants were 528 adolescents, ages 12 to 16 (M = 14...
April 20, 2017: International Journal of Behavioral Nutrition and Physical Activity
https://www.readbyqxmd.com/read/28426802/decoding-the-infant-mind-multivariate-pattern-analysis-mvpa-using-fnirs
#7
Lauren L Emberson, Benjamin D Zinszer, Rajeev D S Raizada, Richard N Aslin
The MRI environment restricts the types of populations and tasks that can be studied by cognitive neuroscientists (e.g., young infants, face-to-face communication). FNIRS is a neuroimaging modality that records the same physiological signal as fMRI but without the constraints of MRI, and with better spatial localization than EEG. However, research in the fNIRS community largely lacks the analytic sophistication of analogous fMRI work, restricting the application of this imaging technology. The current paper presents a method of multivariate pattern analysis for fNIRS that allows the authors to decode the infant mind (a key fNIRS population)...
2017: PloS One
https://www.readbyqxmd.com/read/28422609/isotemporal-analysis-of-the-association-of-objectively-measured-physical-activity-with-depressive-symptoms-results-from-hispanic-community-health-study-study-of-latinos-hchs-sol
#8
Chad D Rethorst, Ashley E Moncrieft, Marc D Gellman, Elva M Arredondo, Christina Buelna, Shelia F Castañeda, Martha L Daviglus, Unab I Khan, Krista M Perreira, Daniela Sotres-Alvarez, Mark Stoutenberg
BACKGROUND: The burden of depression among Hispanics/Latinos indicates the need to identify factors related to depressive symptoms. This paper examines the relationship of physical activity (PA) and sedentary behavior (SB) with depressive symptoms in Hispanic/Latinos. METHODS: The Hispanic Community Health Study / Study of Latinos (HCHS/SOL) is a population-based, cohort study of Hispanic/Latinos in four United States metropolitan areas. Objectively measured PA was coded into: sedentary behavior (SB), light-intensity (LPA), moderate-intensity (MPA), and vigorous-intensity (VPA); and the Center for Epidemiological Studies Depression Scale-10 assessed depressive symptoms...
April 19, 2017: Journal of Physical Activity & Health
https://www.readbyqxmd.com/read/28422582/combining-activity-related-behaviors-and-attributes-improves-prediction-of-health-status-in-nhanes
#9
Sarah Kozey Keadle, Shirley Bluethmann, Charles Matthews, Barry I Graubard, Frank Perna
BACKGROUND: This paper tested whether a physical activity index (PAI) that integrates PA-related behaviors (i.e., moderate-vigorous [MVPA] and TV viewing) and performance measures (i.e., cardiorespiratory fitness and muscle strength) improves prediction of health status. METHODS: Participants were a nationally representative sample of US adults from 2011-2012 NHANES. Dependent variables (self-reported health status, multi-morbidity, functional limitations and metabolic syndrome) were dichotomized...
April 19, 2017: Journal of Physical Activity & Health
https://www.readbyqxmd.com/read/28421820/characteristics-associated-with-physical-activity-capacity-and-performance-in-children-and-adolescents-with-an-acquired-brain-injury
#10
Emmah Baque, Lee Barber, Leanne Sakzewski, Robert Ware, Roslyn N Boyd
AIM: To examine characteristics associated with physical activity capacity and performance in children with acquired brain injury (ABI). METHODS: 58 children (32 men; age 11 years 11 months ± 2 years 6 months; Gross motor function classification system [GMFCS] equivalent I = 29, II = 29) >12 months post ABI were recruited. Physical activity capacity measures included: (i) combined score of three 30-second repetition maximum functional strength exercises; (ii) timed up and go; (iii) 6-minute walk test and (iv) high-level mobility assessment tool (HiMAT)...
April 19, 2017: Brain Injury: [BI]
https://www.readbyqxmd.com/read/28420602/the-fitbit-one-physical-activity-tracker-in-men-with-prostate-cancer-validation-study
#11
Erin L Van Blarigan, Stacey A Kenfield, Lucy Tantum, Lisa A Cadmus-Bertram, Peter R Carroll, June M Chan
BACKGROUND: Physical activity after cancer diagnosis improves quality of life and may lengthen survival. However, objective data in cancer survivors are limited and no physical activity tracker has been validated for use in this population. OBJECTIVE: The aim of this study was to validate the Fitbit One's measures of physical activity over 7 days in free-living men with localized prostate cancer. METHODS: We validated the Fitbit One against the gold-standard ActiGraph GT3X+ accelerometer in 22 prostate cancer survivors under free-living conditions for 7 days...
April 18, 2017: JMIR Cancer
https://www.readbyqxmd.com/read/28420363/context-matters-sources-of-variability-in-weekend-physical-activity-among-families-a-repeated-measures-study
#12
Robert J Noonan, Stuart J Fairclough, Zoe R Knowles, Lynne M Boddy
BACKGROUND: Family involvement is an essential component of effective physical activity (PA) interventions in children. However, little is known about the PA levels and characteristics of PA among families. This study used a repeated measures design and multiple data sources to explore the variability and characteristics of weekend PA among families. METHODS: Families (including a 'target' child aged 9-11 years, their primary caregiver(s) and siblings aged 6-8 years) were recruited through primary schools in Liverpool, UK...
April 18, 2017: BMC Public Health
https://www.readbyqxmd.com/read/28419817/objectively-measured-physical-activity-in-patients-after-anterior-cruciate-ligament-reconstruction
#13
David R Bell, Karin A Pfeiffer, Lisa A Cadmus-Bertram, Stephanie M Trigsted, Adam Kelly, Eric G Post, Joseph M Hart, Dane B Cook, Warren R Dunn, Christopher Kuenze
BACKGROUND: Returning to a healthy level of physical activity is among the most commonly discussed clinical goals for patients recovering from anterior cruciate ligament reconstruction (ACLR). However, physical activity has not been objectively measured in this population. PURPOSE: To investigate differences in the mean time (min/d) spent in moderate-to-vigorous physical activity (MVPA) as well as the daily step count (steps/d) between patients who underwent ACLR and matched controls...
April 1, 2017: American Journal of Sports Medicine
https://www.readbyqxmd.com/read/28419028/physical-activity-assessment-with-the-actigraph-gt3x-and-doubly-labeled-water
#14
Andrea K Chomistek, Changzheng Yuan, Charles E Matthews, Richard P Troiano, Heather R Bowles, Jennifer Rood, Junaidah B Barnett, Walter C Willett, Eric B Rimm, David R Bassett
PURPOSE: To compare the degree to which four accelerometer metrics-total activity counts per day (TAC/d), steps per day (steps/d), physical activity energy expenditure (PAEE, kcal/kg/day), and moderate- to vigorous-intensity physical activity (MVPA, min/d)- were correlated with PAEE measured by doubly-labeled water (DLW). Additionally, accelerometer metrics based on vertical axis counts and triaxial counts were compared. METHODS: This analysis included 684 women and 611 men aged 43 - 83 years...
April 18, 2017: Medicine and Science in Sports and Exercise
https://www.readbyqxmd.com/read/28416352/setting-them-up-for-lifetime-activity-play-competence-perceptions-and-physical-activity-in-young-children
#15
Lisa M Barnett, Nicola D Ridgers, Kylie Hesketh, Jo Salmon
OBJECTIVES: Possessing positive physical perceived competence is important for physical activity in older children. Young children are primarily physically active through play-based behaviour rather than through organised sports and activities, so understanding how play perceptions might influence physical activity behaviour is important. The study purpose was to assess if perceived active play competence is associated with young children's physical activity. DESIGN: Cross sectional study...
March 21, 2017: Journal of Science and Medicine in Sport
https://www.readbyqxmd.com/read/28410327/the-activpaltm-accurately-classifies-activity-intensity-categories-in-healthy-adults
#16
Kate Lyden, Sarah Kozey Keadle, John Staudenmayer, Patty S Freedson
The activPAL (AP) monitor is well established for distinguishing sitting, standing, and stepping time. However, its validity in predicting time in physical activity intensity categories in a free-living environment has not been determined. PURPOSE: This study aimed to determine the validity of the AP in estimating time spent in sedentary, light, and moderate-to-vigorous physical activity (MVPA) in a free-living environment. METHODS: Thirteen participants (mean ± SD age = 24...
May 2017: Medicine and Science in Sports and Exercise
https://www.readbyqxmd.com/read/28407554/transdiagnostic-differences-in-the-resting-state-functional-connectivity-of-the-prefrontal-cortex-in-depression-and-schizophrenia
#17
Xi Chen, Chang Liu, Hui He, Xin Chang, Yuchao Jiang, Yingjia Li, Mingjun Duan, Jianfu Li, Cheng Luo, Dezhong Yao
BACKGROUND: Depression and schizophrenia are two of the most serious psychiatric disorders. They share similar symptoms but the pathology-specific commonalities and differences remain unknown. This study was conducted to acquire a full picture of the functional alterations in schizophrenia and depression patients. METHODS: The resting-state fMRI data from 20 patients with schizophrenia, 20 patients with depression and 20 healthy control subjects were collected. A data-driven approach that included local functional connectivity density (FCD) analysis combined with multivariate pattern analysis (MVPA) was used to compare the three groups...
April 4, 2017: Journal of Affective Disorders
https://www.readbyqxmd.com/read/28405340/association-of-physiological-and-psychological-health-outcomes-with-physical-activity-and-sedentary-behavior-in-adults-with-type-2-diabetes
#18
Jeanette M Garcia, Daniel Cox, David J Rice
PURPOSE: To examine the association between change in moderate-to-vigorous physical activity (MVPA) and sedentary behavior (SB) over a 6-month period with physiological and psychological factors in adults with type 2 diabetes (T2D). METHODS: Participants included 26 middle-aged (mean age=56.1±10.8 years; 42% women), overweight/obese (mean body mass index (BMI) =37.22±8.78 kg/m(2)) adults who had been diagnosed with T2D within the past 5 years (mean HbA1c=7...
2017: BMJ Open Diabetes Research & Care
https://www.readbyqxmd.com/read/28404826/multi-sensory-coding-in-the-multiple-demand-regions-vibrotactile-task-information-is-coded-in-frontoparietal-cortex
#19
Alexandra Woolgar, Regine Zopf
At any given moment, our brains receive input from multiple senses. Successful behaviour depends on our ability to prioritise the most important information and ignore the rest. A multiple-demand (MD) network of frontal and parietal regions is thought to support this process by adjusting to code information that is currently relevant (Duncan 2010). Accordingly, the network is proposed to encode a range of different types of information, including perceptual stimuli, task rules, and responses, as needed for the current cognitive operation...
April 12, 2017: Journal of Neurophysiology
https://www.readbyqxmd.com/read/28398945/objective-measures-of-physical-activity-and-cardiometabolic-and-endocrine-biomarkers
#20
Hala B AlEssa, Andrea K Chomistek, Susan E Hankinson, Junaidah B Barnett, Jennifer Rood, Charles E Matthews, Eric B Rimm, Walter C Willett, Frank B Hu, Deirdre K Tobias
PURPOSE: Although physical activity is an established risk factor for chronic disease prevention, the specific mechanisms underlying these relationships are poorly understood. We examined the associations between total activity counts (TAC) and moderate-vigorous physical activity (MVPA) measured by accelerometer, and physical activity energy expenditure (PAEE) measured by doubly-labeled water, with plasma levels of pro-insulin, insulin, c-peptide, IGFBP-3, IGF-1, adiponectin, leptin and leptin-sR...
April 11, 2017: Medicine and Science in Sports and Exercise
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