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Search Results: 1 - 10 of 3758 matches for " Amanda Szabo "
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Construct validation of a non-exercise measure of cardiorespiratory fitness in older adults
Emily L Mailey, Siobhan M White, Thomas R Wójcicki, Amanda N Szabo, Arthur F Kramer, Edward McAuley
BMC Public Health , 2010, DOI: 10.1186/1471-2458-10-59
Abstract: Participants (n = 172) aged 60 to 80 years with no contraindications to submaximal or maximal exercise testing completed a maximal graded exercise test (GXT) and the submaximal Rockport 1-mile walk test on separate occasions. Data included in the regression equation (age, sex, body mass index, resting heart rate, and physical activity) were obtained via measurement or self-report. Participants also reported presence of cardiovascular conditions.The multiple R for the regression equation was .72, p < .001 and CRF estimated from this equation was significantly correlated with the MET value from the GXT (r = 0.66) and with CRF estimated from submaximal field testing (r = 0.67). All three CRF indices were significantly and inversely associated with reporting more cardiovascular conditions.This research provides preliminary evidence that a non-exercise estimate of CRF is at least as valid as field test estimates of CRF and represents a low-risk, low-cost, and expedient method for estimating fitness in older adults.Cardiorespiratory fitness (CRF) is associated with a decreased risk of all-cause mortality and chronic illnesses, especially cardiovascular disease [1,2]. Additionally, cross-sectional studies and randomized clinical trials suggest that CRF is associated with brain structure and function [3] and that improvements in CRF brought about by exercise training are implicated in the restoration of neural and cognitive functioning in older adults [4-6]. Whereas the consideration of common risk factors such as physical inactivity and overweight status can provide information relative to the health status of an individual, CRF is a multifaceted construct that reflects the overall efficiency of the cardiovascular system and takes these other common health indicators into account.Although being able to measure CRF expediently during a typical office visit health assessment or a population-based study would be valuable, it is a considerable challenge to adequately measure C
Does Increased Exercise or Physical Activity Alter Ad-Libitum Daily Energy Intake or Macronutrient Composition in Healthy Adults? A Systematic Review
Joseph E. Donnelly, Stephen D. Herrmann, Kate Lambourne, Amanda N. Szabo, Jeffery J. Honas, Richard A. Washburn
PLOS ONE , 2014, DOI: 10.1371/journal.pone.0083498
Abstract: Background The magnitude of the negative energy balance induced by exercise may be reduced due to compensatory increases in energy intake. Objective To address the question: Does increased exercise or physical activity alter ad-libitum daily energy intake or macronutrient composition in healthy adults? Data Sources PubMed and Embase were searched (January 1990–January 2013) for studies that presented data on energy and/or macronutrient intake by level of exercise, physical activity or change in response to exercise. Ninety-nine articles (103 studies) were included. Study Eligibility Criteria Primary source articles published in English in peer-reviewed journals. Articles that presented data on energy and/or macronutrient intake by level of exercise or physical activity or changes in energy or macronutrient intake in response to acute exercise or exercise training in healthy (non-athlete) adults (mean age 18–64 years). Study Appraisal and Synthesis Methods Articles were grouped by study design: cross-sectional, acute/short term, non-randomized, and randomized trials. Considerable heterogeneity existed within study groups for several important study parameters, therefore a meta-analysis was considered inappropriate. Results were synthesized and presented by study design. Results No effect of physical activity, exercise or exercise training on energy intake was shown in 59% of cross-sectional studies (n = 17), 69% of acute (n = 40), 50% of short-term (n = 10), 92% of non-randomized (n = 12) and 75% of randomized trials (n = 24). Ninety-four percent of acute, 57% of short-term, 100% of non-randomized and 74% of randomized trials found no effect of exercise on macronutrient intake. Forty-six percent of cross-sectional trials found lower fat intake with increased physical activity. Limitations The literature is limited by the lack of adequately powered trials of sufficient duration, which have prescribed and measured exercise energy expenditure, or employed adequate assessment methods for energy and macronutrient intake. Conclusions We found no consistent evidence that increased physical activity or exercise effects energy or macronutrient intake.
The Role of Maternalism in Contemporary Paid Domestic Work  [PDF]
Amanda Moras
Sociology Mind (SM) , 2013, DOI: 10.4236/sm.2013.33033
Abstract:

Various studies of domestic work have identified close personal relationships between domestic workers and employers as a key instrument in the exploitation of domestic workers, allowing employers to solicit unpaid services as well as a sense of superiority (Rollins, 1985; Romero, 2002; Glenn, 1992; Hondagneu-Sotelo, 2001). Likewise, other scholars have pointed out that close employee-employer relationships may actually empower domestic workers, increasing job leverage (Thorton-Dill, 1994). Ultimately, these lines are blurry and ever changing as employers continuously redefine employee expectations. Drawing from a larger study involving thirty interviews with white upper middle class women who currently employ domestic workers (mostly housecleaners) this paper explores employers’ interactions with domestic workers. Through these interviews this research elaborates on how employers and employees interact, how employers feel about these interactions, and explores to what extent these interactions are informed by the widely reported maternalistic tendencies of the past, while also considering the consequences of this.

Epistemological Limits to Scientific Prediction: The Problem of Uncertainty  [PDF]
Amanda Guillan
Open Journal of Philosophy (OJPP) , 2014, DOI: 10.4236/ojpp.2014.44053
Abstract: A key issue regarding the reliability of scientific prediction is uncertainty, which also affects its possibility as scientific knowledge. Thus, uncertainty is directly related to the epistemological limits of prediction in science. Within this context, this paper considers the obstacles to scientific predictions that are related to uncertainty. The analysis is made according to the twofold character of the limits of science, which is characterized in terms of the “barriers” and the “confines.” In addition, the study takes into account the presence of internal and external factors related to the epistemological limits of science. Following these lines of research, the analysis is focused on two steps. First, there is a characterization of the coordinates of Nicholas Rescher’s approach, which is particularly important regarding the epistemological limits to scientific prediction. Second, there is a study of uncertainty as an epistemological obstacle to predictability. Thereafter, the consequences for the future are pointed out.
Artful Deception, Languaging, and Learning—The Brain on Seeing Itself  [PDF]
Amanda Preston
Open Journal of Philosophy (OJPP) , 2015, DOI: 10.4236/ojpp.2015.57049
Abstract:

Despite having named ourselves Homo sapiens—a designation contingent on word/reason (logos) as our chosen identifier—recent evidence suggests language is only a small fraction of the story. Human beings would be more aptly named Homo videns—seeing man—if percentage of cortex area per modality determined the labeling of an organism. Instead, the sentential ontology of language philosophers and linguists persists in spite of the growing body of cognitive research challenging the language instinct as our most defining characteristic. What is becoming clearer is that language is palimpsestic. It is like a marked transparency over visuospatial maps, which are wired to sensorimotor maps. The left lateralized interpreter uses language to communicably narrativize an apparent unity, but people are not the only fictionalizing animals. This examination looks to cognitive and psychological studies to suggest that a prelinguistic instinct to make sense of unrelated information is a biological consequence of intersections among pattern matching, symbolic thinking, aesthetics, and emotive tagging, which is accessible by language, but not a product thereof. Language, rather, is just an outer surface. Rather than thinking man, playing man, or tool-making man, we would be better described as storytelling animals (narrativism). Like other social mammals, we run simulation heuristics to predict causal chains, object/event frequency, value association, and problem solving. The post hoc product is episodic fiction. Language merely serves to magnify what Friederich Nietzsche is rightfully identified as an art of dissimulation—lying. In short, the moral of the story is that we are making it all up as we go along.

Development of Wearable Micro-actuator Array for 3-D Virtual Tactile Displays  [PDF]
Zoltan Szabo, Eniko T. Enikov
Journal of Electromagnetic Analysis and Applications (JEMAA) , 2012, DOI: 10.4236/jemaa.2012.46031
Abstract: A novel 4 by 4 array of electromagnetic micro-actuators operating on the principle of voice-coil actuators is presented. The intended application of the array is dynamic tactile stimulation, where multiple actuators generate an illusion of touching a moving pattern. In comparison to earlier designs [1-3], the device has smaller dimensions of 2.28 mm in diameter and 7 mm in length, which allowed its use in an array capable of hosting up to a 5 by 5 set of actuators with a rectangular shape covering an area of 18 mm by 21 mm. Using finite element analysis of several conceptual designs of actuators [1,4,5], it was established that the voice-coil type device (where the coil is the moving part) has most beneficial characteristics for the envisioned application. These include sufficient force over a relatively large distance, allowing tactile stimulation of surfaces with irregular shape, fast response, and small foot-print that matches the density of the tactile sensory neurons in the human finger. Eexperimental evaluation of the operation of neighboring actuators spaced at 3.3 mm apart, indicates that there is no crosstalk between the actuators. The resulting density exceeds that of previously reported alternative designs based on moveable permanent magnets [4,6]. Static force measurement indicate that each micro-actuator can produce at least 26 mN of repulsive force over a stroke of 2100 μm with a peak force of 34 mN. The driving circuit operates at 13.5V and generates a vibration frequency of up to 265 Hz without significant change of the force-displacement characteristics. In the higher frequency range (above 100 Hz) the actuator provides at least 15 mN of force over a slightly reduced stroke of 2300 μm, and a peak force of 21 mN. All of the above parameters meet the required threshold values of tactile human perception known from [2] and [3].
Population genetic examination on the heterosis effects in crossbreeding Hungarian Simmental cattle with Herefords
F Szabo
Genetics Selection Evolution , 1982, DOI: 10.1186/1297-9686-14-4-582b
Abstract:
Common adverse drug reactions with psychiatric medications and an approach to their management: Adverse drug reactions are as important in psychiatric practice as they are in any other branch of medicine
CP Szabo
Continuing Medical Education , 2011,
Abstract:
Population genetic examination on the heterosis effects in crossbreeding Hungarian Simmental cattle with Herefords
Szabo F
Genetics Selection Evolution , 1982,
Abstract:
Certain finite abelian groups with the Redei k-property
Sandor Szabo
International Journal of Group Theory , 2013,
Abstract: Three infinite families of finite abeliab groups will be described such that each members of these families has the Redei k-property for many non-trivial values of k.
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