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Search Results: 1 - 10 of 1284 matches for " Tracy Washington "
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Measured and Perceived Physical Fitness, Intention, and Self-Reported Physical Activity in Adolescence  [PDF]
Timo Jaakkola, Tracy Washington
Advances in Physical Education (APE) , 2011, DOI: 10.4236/ape.2011.12004
Abstract: Objective: The aim of this study was to investigate the associations among measured physical fitness, perceived fitness, intention towards future physical activity and self-reported physical activity through junior high school years. Methods: Study participants included 122 Finnish students who were 13 years old during Grade 7. The sample was comprised of 80 girls and 42 boys from 3 junior high schools (Grades 7-9). During the autumn semester of Grade 7, students completed fitness tests and a questionnaire analyzing self-perception of their physical fitness. The questionnaire delivered at Grade 8 included intention towards future physical activity. At Grade 9 students’ self-reported physical activity levels. Results: Structural Equation Modelling revealed an indirect path from physical fitness to self-reported physical activity via perceived physical fitness and intention towards future physical activity. The model also demonstrated a correlation between perceived physical fitness and physical activity. Squared multiple correlations revealed that perceived physical fitness explained 33 % of the actual physical fitness. Conclusions: The results of this study highlight the role of physical and cognitive variables in the process of adoption of physical activity in adolescence.
Expected values for pedometer-determined physical activity in older populations
Catrine Tudor-Locke, Teresa L Hart, Tracy L Washington
International Journal of Behavioral Nutrition and Physical Activity , 2009, DOI: 10.1186/1479-5868-6-59
Abstract: The recently released U.S. Physical Activity Guidelines http://www.health.gov/paguidelines webcite were informed by an advisory committee report that concluded that, for older adults, in addition to the well-know health benefits of a physically active lifestyle, "strong evidence indicates that being physically active is associated with higher levels of functional health, a lower risk of falling, and better cognitive functioning"[1]. Although we have a collective understanding that physical activity declines with age [2], we know little about the actual physical activity patterns of older adults. Accurate and precise quantification of physical activity behaviors is elemental to epidemiologists, physiologists, and behavioral scientists, as well as clinicians engaged in efforts to extend quality years of life and ultimately compress morbidity. In addition, researchers and practitioners must be prepared with practicable and appropriate assessment tools, including becoming competent in the interpretation of their data, if they are to successfully address measurement challenges related to surveillance, screening, intervention, and program evaluation.Motion sensor technology has evolved quickly in recent years, producing a wide variety of commercially available body worn instrumentation, including accelerometers and pedometers, capable of objectively detecting physical activity behaviors. Although accelerometers can offer minute-by-minute estimates of physical activity volume and intensity, their relatively high costs, data management demands, and tandem requisites for personnel time and technical expertise stand as a barrier to widespread implementation outside formal research studies. In contrast, simple and affordable pedometers are generally considered more practical for individual, clinical, and population level applications. In addition, pedometer outputs correlate highly with that of different accelerometers [3]. Although pedometers are not designed to directly dete
Correction: Expected values for pedometer-determined physical activity in older populations
Catrine Tudor-Locke, Teresa L Hart, Tracy L Washington
International Journal of Behavioral Nutrition and Physical Activity , 2009, DOI: 10.1186/1479-5868-6-65
Abstract: After publication of this work [1], we noted that some of the reference numbers in Additional file 1 were incorrect [2-29]. Here we provide the correct table and new reference list.
A time to look within curricula—Nursing students’ perception on sexuality and gender issues  [PDF]
Maryann Washington, Edwina Pereira
Open Journal of Nursing (OJN) , 2012, DOI: 10.4236/ojn.2012.22010
Abstract: Nursing students could be viewed as dynamic change agents given the knowledge and skills they would be equipped with. Amongst all areas to be addressed in their clientele of the hospital or community setting, one key area that a nurse could focus on is sexuality. This however is often neglected for simple reasons such as lack of knowledge, embarrassment, fear of intrusion on privacy, or it is perceived as an un-important concern of the patient. Focus groups discussions combined with self report were conducted on 84 nursing students selected by the faculty from three institutions of nursing to assess their perceptions related to sexuality and gender issues, and thus extrapolate on their learning needs within the curriculum. Student expressed discomfort in caring for patients who had sexual expressions and relationships different from the accepted cultural norm; perceived sexuality primarily as heterosexual relationship; helplessness when faced with sexual harassment in the health care field and gaps in their present curricula in relation to contextualization of sexuality and gender issues.
A New Method of Estimating the Asset Rate of Return  [PDF]
Moawia Alghalith, Tracy Polius
Theoretical Economics Letters (TEL) , 2011, DOI: 10.4236/tel.2011.11001
Abstract: We present a new consumption-based method of estimating the asset rate of return.
Collision Resolution MAC Protocols for Wireless Ad Hoc Networks  [PDF]
Xinhua Yang, Tracy Camp
Communications and Network (CN) , 2013, DOI: 10.4236/cn.2013.51003

In wireless ad hoc networks, nodes cooperatively form a network without any infrastructure such as a BS/AP (base station or access point). The widely-used contention-based MAC protocol, IEEE 802.11b, is inefficient in multi-hop networks due to the hidden and exposed terminal problems. The most popular schedule-based MAC protocol, TDMA (time division multiple access), is difficult to implement in an ad hoc network due to the lack of infrastructure. The contribution of this paper is to provide the community novel and efficient MAC (medium access control) protocols (i.e., a collision resolution protocol) for a wireless ad hoc network without a centralized infrastructure. We propose two new MAC protocols (one distributed algorithm and one cluster-based algorithm) that use a collision resolution scheme for a network with a single BS/AP. We first compare the performance of our distributed algorithm with our cluster-based algorithm. Then, we compare our algorithm that performs better (i.e., our cluster-based algorithm) to TDMA in a two-hop network. The simulation results illustrate that our cluster-based algorithm provides higher throughput and lower delay than TDMA in a two-hop network.

Research Findings Using Mindfulness-Based Interventions for Chronic Pain  [PDF]
Tracy L. Skaer
Pain Studies and Treatment (PST) , 2015, DOI: 10.4236/pst.2015.34005
Abstract: Chronic pain is a complex condition that is very detrimental to physical and psychological wellbeing. It carries a significant level of disability and economic burden. Pain patients frequently experience comorbid mental illness (e.g. depression, anxiety, PTSD, insomnia) and often require psychotherapeutic interventions in addition to medication management. Mindfulness-based interventions (MBIs) have emerged as a means to treat several chronic conditions (e.g. chronic pain, depression, anxiety, substance abuse, stress, insomnia). The objective of this review is to evaluate the current research on the use of MBIs in chronic pain managment. Although there are several controlled trials on the use of MBIs in chronic pain management, only a few studies were found that demonstrated significant effects on pain intensity, quality of life, as well as physical and psychological functioning. Therefore, the current evidence is mixed and there are insufficient data to definitively confirm the full impact of the use of MBIs in chronic pain conditions such as fibromyalgia, chronic low back pain, rheumatoid arthritis, and chronic musculoskeletal pain. The lack of compelling evidence at this time signals a demand for higher quality investigations in this area. Research examining MBIs and concomitant CBT may be of great value in order to synergize and strengthen patient outcomes.
Alteration of Major Insulin Signaling Molecules by Chronic Ethanol in Hypertensive Vascular Smooth Muscle Cells of Rats  [PDF]
Sparkle D. Williams, Benny Washington
CellBio (CellBio) , 2013, DOI: 10.4236/cellbio.2013.24021

Insulin resistance is an important risk factor in the development of cardiovascular diseases such as hypertension and atherosclerosis. However, despite its importance, the specific role of insulin resistance in the etiology of these diseases is poorly understood. At the same time, ethanol (ETOH) is a potent vasoconstrictor that primarily induces down regulation of mitogen activated protein kinases (MAPKs) which could exacerbate insulin resistance and possibly lead to cardiovascular diseases. This article describes how chronic ETOH exposure interferes with insulin signaling in hypertensive vascular smooth muscle cells (HVSMCs) which leads to the alteration of MAPKs, the major signaling molecules. Elevated (50 - 800 mM) chronic exposure (24 hr) of HVSMCS to ETOH prior to insulin stimulation decreased insulin-induced ERK 1/2 (MAPKs) and AKT expression. Similar experiments were conducted using normotensive cells from rat. These cells showed reductions in insulin-induced ERK 1/2 phosphorylation as well, but only at higher concentrations of ETOH (400 - 800 mM). These alterations in insulin signaling could provide an alternative molecular mechanism that may increase the risk of insulin resistance, thus increasing the possibility of cardiovascular diseases.

Rádio Comunitária como estratégia de comunica??o da Extens?o Pesqueira para o Desenvolvimento Local
Signo y Pensamiento , 2011,
Abstract: o objetivo deste estudo é analisar o rádio comunitário como estratégia de comunica??o da extens?o pesqueira para o desenvolvimento local em comunidades cuja pesca é a principal atividade econ?mica, a exemplo da ilha de deus, no recife, pernambuco. a análise parte da recep??o da rádio comunitária boca da ilha pelos moradores da ilha de deus no intuito de compreender as apropria??es que pescadores e pescadoras fazem da emissora local e o sentido que essa popula??o dá às mensagens no seu cotidiano observando as possibilidades do uso do rádio comunitário como parceiro em projetos de extens?o pesqueira.
The Delinquencies of Juvenile Law: A Natural Law Analysis
Ellis Washington
Acta Universitatis Danubius : Juridica , 2010,
Abstract: This article is a substantive analysis tracing the legal, philosophical, social, historical, jurisprudence and political backgrounds of juvenile law, which is an outgrowth of the so-calledProgressive movement - a popular social and political movement of the late nineteenth and early twentieth century. I also trace how this socio-political cause célèbre became a fixture in Americanculture and society due to existential child labor abuses which progressive intellectuals used as a pretext to codify juvenile law in federal law and in statutory law in all 50 states by 1925. Moreover the dubious social science and Machiavellian political efforts that created the juvenile justice system out of whole cloth has done much more harm to the Constitution and to the children it was mandated to protect than any of the Progressive ideas initially envisioned rooted in Positive Law (separation of law and morals). Finally, I present am impassioned argument for congressional repeal of all juvenile case law and statutes because they are rooted in Positive Law, contrary to Natural Law (integration of law and morals), the original intent of the constitutional Framers and are therefore patently unconstitutional.
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