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https://www.readbyqxmd.com/read/29148825/on-the-growth-and-detectability-of-land-plants-on-habitable-planets-around-m-dwarfs
#1
Duo Cui, Feng Tian, Yuwei Wang, Changshen Li, Chaoqing Yu, Le Yu
One signature of life on Earth is the vegetation red edge (VRE) feature of land plants, a dramatic change of reflectivity at wavelength near 0.7 μm. Potentially habitable planets around M dwarfs are tidally locked, which can limit the distribution of land plants. In this study, we used a biogeochemical model to investigate the distribution of land plants on potentially habitable planets around M dwarfs driven by climate data produced in a general circulation model (GCM). When considering the effects of clouds, the observation time needed for VRE detection on nearby p = 1 exoplanets around nearby M dwarfs is on the order of days using a 25 m(2) telescope if a large continent faces Earth during observations...
November 17, 2017: Astrobiology
https://www.readbyqxmd.com/read/29148128/step-ergometer-training-augmented-with-functional-electrical-stimulation-in-individuals-with-chronic-spinal-cord-injury-a-feasibility-study
#2
Candy Tefertiller, Don Gerber
Spinal cord injury (SCI) often results in loss of upright mobility and independence subsequently challenging rehabilitation practitioners for meaningful intervention strategies. The objective of this study was to evaluate the feasibility and potential impact on walking function of the stimulation and ergometer training protocol (STEP) in chronic SCI. Fourteen individuals with a chronic motor incomplete SCI (>1-year post injury) were enrolled in the study. The intervention consisted of a 12-week walking training program delivered three times per week from 20 up to 45 min in combination with 10 channels of FES on a step ergometer...
November 2017: Artificial Organs
https://www.readbyqxmd.com/read/29147036/measuring-arithmetic-a-psychometric-approach-to-understanding-formatting-effects-and-domain-specificity
#3
Katherine T Rhodes, Lee Branum-Martin, Julie A Washington, Lynn S Fuchs
Using multitrait, multimethod data, and confirmatory factor analysis, the current study examined the effects of arithmetic item formatting and the possibility that across formats, abilities other than arithmetic may contribute to children's answers. Measurement hypotheses were guided by several leading theories of arithmetic cognition. With a sample of 1314 3rd grade students (age M=103.24 months, SD=5.41 months), Abstract Code Theory, Encoding Complex Theory, Triple Code Theory, and the Exact versus Approximate Calculations Hypothesis were evaluated, using 11 measures of arithmetic with symbolic problem formats (e...
October 2017: Journal of Educational Psychology
https://www.readbyqxmd.com/read/29146639/impact-of-informal-caregiving-on-older-adults-physical-and-mental-health-in-low-income-and-middle-income-countries-a-cross-sectional-secondary-analysis-based-on-the-who-s-study-on-global-ageing-and-adult-health-sage
#4
Sylvie D Lambert, Steven J Bowe, Patricia M Livingston, Leila Heckel, Selina Cook, Paul Kowal, Liliana Orellana
OBJECTIVES: A high proportion of care stemming from chronic disease or disability in low-income and middle-income countries is provided by informal caregivers. The goal of this study was to determine the level of burden experienced by these caregivers, explore associated factors and assess whether caregivers' and non-caregivers' health differed. DESIGN AND SETTING: This cross-sectional study was a secondary analysis of data on caregivers' burden, health and health risk factors in Ghana, India and the Russian Federation collected as part of the WHO's Study on global AGEing and adult health (SAGE) Wave 1...
November 15, 2017: BMJ Open
https://www.readbyqxmd.com/read/29146459/factors-influencing-food-choice-of-athletes-at-international-competition-events
#5
Fiona E Pelly, Sarah J Burkhart, Peter Dunn
Although the nutrient requirements and dietary intake of athletes have been thoroughly investigated, little is known about the influences on their food choice, particularly prior to and during competition. This study sought to investigate factors that influence food selection of athletes at two similar international competition events: the Melbourne 2006 and Delhi 2010 Commonwealth Games. A secondary aim was to explore differences in these factors between at each event given the culturally diverse locations...
November 13, 2017: Appetite
https://www.readbyqxmd.com/read/29146412/skeletal-muscle-overexpression-of-nicotinamide-phosphoribosyl-transferase-in-mice-coupled-with-voluntary-exercise-augments-exercise-endurance
#6
Sheila R Costford, Bram Brouwers, Meghan E Hopf, Lauren M Sparks, Mauro Dispagna, Ana P Gomes, Heather H Cornnell, Chris Petucci, Peter Phelan, Hui Xie, Fanchao Yi, Glenn A Walter, Timothy F Osborne, David A Sinclair, Randall L Mynatt, Julio E Ayala, Stephen J Gardell, Steven R Smith
OBJECTIVE: Nicotinamide phosphoribosyl transferase (NAMPT) is the rate-limiting enzyme in the salvage pathway that produces nicotinamide adenine dinucleotide (NAD(+)), an essential co-substrate regulating a myriad of signaling pathways. We produced a mouse that overexpressed NAMPT in skeletal muscle (NamptTg) and hypothesized that NamptTg mice would have increased oxidative capacity, endurance performance, and mitochondrial gene expression, and would be rescued from metabolic abnormalities that developed with high fat diet (HFD) feeding...
November 6, 2017: Molecular Metabolism
https://www.readbyqxmd.com/read/29146288/unusual-iliac-crest-stress-fracture-in-a-marathoner-a-case-report
#7
Amy M West, Kelly C McInnis
This case presentation describes a 50-year-old healthy woman who developed left sided hip pain while training for the Boston Marathon. Magnetic Resonance Imaging (MRI) demonstrates a stress fracture of the left iliac body. This injury is unique in that it did not occur in the setting of low bone mineral density and it does not fall into the current published radiographic categorization based on location of injury. This case illustrates an uncommon and atypical bone stress injury in an endurance athlete. It should be considered in the differential diagnosis of runners presenting with hip or lumbopelvic pain...
November 13, 2017: PM & R: the Journal of Injury, Function, and Rehabilitation
https://www.readbyqxmd.com/read/29146047/maternal-immune-activation-delays-excitatory-to-inhibitory-gamma-aminobutyric-acid-switch-in-offspring
#8
Irene Corradini, Elisa Focchi, Marco Rasile, Raffaella Morini, Genni Desiato, Romana Tomasoni, Michela Lizier, Elsa Ghirardini, Riccardo Fesce, Diego Morone, Isabella Barajon, Flavia Antonucci, Davide Pozzi, Michela Matteoli
BACKGROUND: The association between maternal infection and neurodevelopmental defects in progeny is well established, although the biological mechanisms and the pathogenic trajectories involved have not been defined. METHODS: Pregnant dams were injected intraperitoneally at gestational day 9 with polyinosinic:polycytidylic acid. Neuronal development was assessed by means of electrophysiological, optical, and biochemical analyses. RESULTS: Prenatal exposure to polyinosinic:polycytidylic acid causes an imbalanced expression of the Na(+)-K(+)-2Cl(-) cotransporter 1 and the K(+)-Cl(-) cotransporter 2 (KCC2)...
November 14, 2017: Biological Psychiatry
https://www.readbyqxmd.com/read/29145831/copd-online-rehabilitation-versus-conventional-copd-rehabilitation-rationale-and-design-for-a-multicenter-randomized-controlled-trial-study-protocol-core-trial
#9
Henrik Hansen, Theresa Bieler, Nina Beyer, Nina Godtfredsen, Thomas Kallemose, Anne Frølich
BACKGROUND: Rehabilitation of patients with chronic obstructive pulmonary disease (COPD) is a key treatment in COPD. However, despite the existing evidence and a strong recommendation from lung associations worldwide, 50% of patients with COPD decline to participate in COPD rehabilitation program and 30-50% drop-out before completion. The main reasons are severe symptoms, inflexible accessibility and necessity for transportation. Currently there are no well-established and evident rehabilitation alternatives...
November 16, 2017: BMC Pulmonary Medicine
https://www.readbyqxmd.com/read/29144220/is-low-cognitive-functioning-a-predictor-or-consequence-of-major-depressive-disorder-a-test-in-two-longitudinal-birth-cohorts
#10
Jonathan D Schaefer, Matthew A Scult, Avshalom Caspi, Louise Arseneault, Daniel W Belsky, Ahmad R Hariri, Honalee Harrington, Renate Houts, Sandhya Ramrakha, Richie Poulton, Terrie E Moffitt
Cognitive impairment has been identified as an important aspect of major depressive disorder (MDD). We tested two theories regarding the association between MDD and cognitive functioning using data from longitudinal cohort studies. One theory, the cognitive reserve hypothesis, suggests that higher cognitive ability in childhood decreases risk of later MDD. The second, the scarring hypothesis, instead suggests that MDD leads to persistent cognitive deficits following disorder onset. We tested both theories in the Dunedin Study, a population-representative cohort followed from birth to midlife and assessed repeatedly for both cognitive functioning and psychopathology...
November 16, 2017: Development and Psychopathology
https://www.readbyqxmd.com/read/29143975/sustained-cardiac-programming-by-short-term-juvenile-exercise-training-in-male-rats
#11
Y Asif, M E Wlodek, M J Black, A P Russell, P F Soeding, G D Wadley
The aim of this study was to investigate if endurance training during juvenile life 'reprograms' the heart and leads to sustained improvements in the structure, function, and morphology of the adult heart. Male Wistar Kyoto rats were exercise trained 5 days/week for four weeks in either juvenile (5-9 weeks of age), adolescent (11-15 weeks of age) or adult life (20-24 weeks of age). Juvenile exercise training, when compared to 24 week old sedentary rats, led to sustained increases in left ventricle (LV) mass (+18%; P < 0...
November 16, 2017: Journal of Physiology
https://www.readbyqxmd.com/read/29142094/standardized-automated-training-of-rhesus-monkeys-for-neuroscience-research-in-their-housing-environment
#12
Michael Berger, Antonino Calapai, Valeska Stephan, Michael Niessing, Leonore Burchardt, Alexander Gail, Stefan Treue
Teaching non-human primates the complex cognitive behavioral tasks that are central to cognitive neuroscience research is an essential and challenging endeavor. It is crucial for the scientific success that the animals learn to interpret the often complex task rules, and reliably and enduringly act accordingly. To achieve consistent behavior and comparable learning histories across animals, it is desirable to standardize training protocols. Automatizing the training can significantly reduce the time invested by the person training the animal...
November 15, 2017: Journal of Neurophysiology
https://www.readbyqxmd.com/read/29141661/preventing-enduring-behavioural-problems-in-young-children-through-early-psychological-intervention-healthy-start-happy-start-study-protocol-for-a-randomized-controlled-trial
#13
Paul G Ramchandani, Christine O'Farrelly, Daphne Babalis, Marian J Bakermans-Kranenburg, Sarah Byford, Ellen S R Grimas, Jane E Iles, Marinus H van IJzendoorn, Julia McGinley, Charlotte M Phillips, Alan Stein, Jane Warwick, Hillary C Watt, Stephen Scott
BACKGROUND: Behavioural problems are common in early childhood, and can result in enduring costs to the individual and society, including an increased risk of mental and physical illness, criminality, educational failure and drug and alcohol misuse. Most previous research has examined the impact of interventions targeting older children when difficulties are more established and harder to change, and have rarely included fathers. We are conducting a trial of a psychological intervention delivered to families with very young children, engaging both parents where possible...
November 15, 2017: Trials
https://www.readbyqxmd.com/read/29141591/the-impact-of-pregnancy-loss-on-men-s-health-and-wellbeing-a-systematic-review
#14
Clemence Due, Stephanie Chiarolli, Damien W Riggs
BACKGROUND: Research indicates that men's psychological and physical health outcomes after pregnancy loss differ from those of women. Our goal was to identify all literature with a focus on men's experiences of pregnancy loss in order to outline current evidence concerning men's wellbeing. METHODS: A systematic review of literature on men and pregnancy loss was undertaken following the Preferred Reporting Items for Systematic Reviews and Meta-Analyses (PRISMA), Joanna Briggs Institute (JBI) and Social Care Institute for Excellence (SCIE) guidelines...
November 15, 2017: BMC Pregnancy and Childbirth
https://www.readbyqxmd.com/read/29141513/alternative-scapular-stabilization-exercises-to-target-strength-endurance-and-function-of-shoulders-in-tetraplegia-a-prospective-time-series-study
#15
Carolina Lins, Alex Castro, Giovanna I S Medina, Eliza R F B M Azevedo, Bruno S Donato, Marina S S Chagas, Janaína Roland Tancredo, Letícia Vargas de Almeida, Alberto Cliquet
OBJECTIVE: Scapular stabilization exercises (SSE) are well-established for the able-bodies. The aim of the current study is to access the potential benefits of SSE on isometric internal and external rotator strength, endurance and function of the shoulder in persons with tetraplegia, throughout a 12-week exercise program consisting of five resisted movements with elastic bands. DESIGN: Prospective non-controlled intervention study. Setting/Participants/Interventions: A convenience sample of 17 subjects (age, 40...
November 16, 2017: Journal of Spinal Cord Medicine
https://www.readbyqxmd.com/read/29141215/octopamine-drives-endurance-exercise-adaptations-in-drosophila
#16
Alyson Sujkowski, Divya Ramesh, Axel Brockmann, Robert Wessells
Endurance exercise is an effective therapeutic intervention with substantial pro-healthspan effects. Male Drosophila respond to a ramped daily program of exercise by inducing conserved physiological responses similar to those seen in mice and humans. Female flies respond to an exercise stimulus but do not experience the adaptive training response seen in males. Here, we use female flies as a model to demonstrate that differences in exercise response are mediated by differences in neuronal activity. The activity of octopaminergic neurons is specifically required to induce the conserved cellular and physiological changes seen following endurance training...
November 14, 2017: Cell Reports
https://www.readbyqxmd.com/read/29141022/trabecular-bone-in-the-calcaneus-of-runners
#17
Andrew Best, Brigitte Holt, Karen Troy, Joseph Hamill
Trabecular bone of the human calcaneus is subjected to extreme repetitive forces during endurance running and should adapt in response to this strain. To assess possible bone functional adaptation in the posterior region of the calcaneus, we recruited forefoot-striking runners (n = 6), rearfoot-striking runners (n = 6), and non-runners (n = 6), all males aged 20-41 for this institutionally approved study. Foot strike pattern was confirmed for each runner using a motion capture system. We obtained high resolution peripheral computed tomography scans of the posterior calcaneus for both runners and non-runners...
2017: PloS One
https://www.readbyqxmd.com/read/29140910/polygenic-profile-and-exercise-induced-muscle-damage-by-a-competitive-half-ironman
#18
Juan Del Coso, Juan J Salinero, Beatriz Lara, César Gallo-Salazar, Francisco Areces, David Herrero, Carlos Puente
Del Coso, J, Salinero, JJ, Lara, B, Gallo-Salazar, C, Areces, F, Herrero, D, and Puente, C. Polygenic profile and exercise-induced muscle damage by a competitive half-ironman. J Strength Cond Res XX(X): 000-000, 2017-To date, it is still unknown why some individuals develop higher levels of muscle damage than other individuals, despite participating in exercise with comparable levels of physical intensity. The aim of this investigation was to analyze 7 single-nucleotide polymorphisms (SNPs) that are candidates to explain individual variations in the level of muscle damage attained during a half-ironman competition...
November 14, 2017: Journal of Strength and Conditioning Research
https://www.readbyqxmd.com/read/29140477/when-can-the-child-speak-for-herself-the-limits-of-parental-consent-in-data-protection-law-for-health-research
#19
Mark J Taylor, Edward S Dove, Graeme Laurie, David Townend
Draft regulatory guidance suggests that if the processing of a child's personal data begins with the consent of a parent, then there is a need to find and defend an enduring consent through the child's growing capacity and on to their maturity. We consider the implications for health research of the UK Information Commissioner's Office's (ICO) suggestion that the relevant test for maturity is the Gillick test, originally developed in the context of medical treatment. Noting the significance of the welfare principle to this test, we examine the implications for the responsibilities of a parent to act as proxy for their child...
November 13, 2017: Medical Law Review
https://www.readbyqxmd.com/read/29140314/self-perceived-fatigue-in-adolescents-in-relation-to-body-composition-and-physical-outcomes
#20
Stijn Vantieghem, Ivan Bautmans, Jonathan Tresignie, Steven Provyn
BackgroundIncreased self-perceived fatigue (SpF) has already been identified in chronic conditions such as obesity, but it is also a growing problem in school-attending adolescents (±25%). This study tried to link body composition to SpF and physical activity/performance. Additionally, indicators for fatigue were determined.MethodsA total of 452 adolescents were recruited. Body composition was measured and physical activity, physical performance, and SpF were assessed. Based on the total SpF (Multidimensional Fatigue Inventory) outcomes, three groups were created: low fatigue (LF) medium fatigue (MF) and high fatigue (HF)...
November 15, 2017: Pediatric Research
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