698 research outputs found
Doping In Sports: Do Parents Matter?
Athletes exist and function in an environment of complex relationships; however, little is known about the influence of particular relationships for athletes’ attitudes, beliefs and behaviors towards doping in sport. Among adolescent and young adult athlete populations, parents and coaches have been highlighted as particularly influential, but when and how they influence athletes in this context is unknown. Therefore, this study aimed to explore the role of significant others in this domain. Design: Cross-sectional qualitative methodology. Method: Semi-structured interviews were conducted with 14 British (M = 8) track and field student-athletes. Thematic analysis was employed to analyze the transcripts. Results: Prominently, the parent-athlete relationship influenced athletes’ lives in and beyond sport. Parents shape(d) athletes’ personal morals by establishing their initial sense of right and wrong. In turn, this appears to guide athletes’ decision-making and behaviors even after leaving the family home. Additionally, parents impacted the trajectory of participants’ athletic careers and their approach toward sport in general. Ensuing from this, participants exhibit a desire to give back to their parents. Cumulatively, the parent-athlete relationship (in)directly deters athletes from doping. Conclusion: Given the enduring significance of the parent-athlete relationship for shaping athletes’ attitudes, experiences and behaviors towards doping, parents should be prioritized with targeted anti-doping education. Specifically, parents should be provided with doping knowledge (e.g., risks, warning signs, consequences), and then equipped and empowered to transmit this information to athletes. Such an approach has the potential to simultaneously increase the engagement of parents and athletes in anti-doping efforts and education
“The process isn’t a case of report it and stop”: Athletes’ lived experience of whistleblowing on doping in sport
Whistleblowing is effective for exposing doping in sport, garnering increased support and promotion within the global anti-doping community. However, limited attention has been afforded towards understanding the doping whistleblowing process. In response, the authors convey a sense of the whistleblowing context by using the actual words of whistleblowers to illuminate their experience. To achieve this aim, the authors have adopted a narrative approach. Three doping whistleblowers were interviewed regarding their lived experiences of whistleblowing on doping and the data has been represented in the form of one composite creative non-fiction story. The story narrates the whistleblowing experience as a process whereby individuals must (a) determine what they witnessed and experienced was doping, (b) make the decision and take action to report it, and (c) deal with the myriad of consequences and emotions. It also highlights the dilemma faced by whistleblowers who are likely equally compelled to adhere to the moral of loyalty and fairness; yet in this context they are unable to do both. Stemming from the story presented and the forms of retribution experienced, the authors offer practical suggestions for sporting organisations to address in order to empower others to whistleblow on doping in sport. Specifically, organisations should establish and implement whistleblowing policies that: (a) provide protection for whistleblowers, (b) mandate whistleblowing education, and (c) identify an independent person for individuals to seek guidance and support from before, during and following the act of whistleblowing
“I don’t know if I would report them”: Student-athletes’ thoughts, feelings and anticipated behaviours on blowing the whistle on doping in sport.
Revisions to global anti-doping policy and growing evidence of systematic doping in sport means athletes and athlete support personnel are increasingly encouraged to ‘blow the whistle’ on doping. Yet, individuals’ thoughts, feelings, and anticipated behaviours in reporting wrongdoing of this kind are unknown, hindering its promotion. To inform current anti-doping efforts, this study explored student-athletes’ anticipated behaviours relative to blowing the whistle on performance enhancing drug (PED) use and their underpinning attitudes. Design: Qualitative methodology. Method: Semi-structured interviews were conducted with 28 track and field university student-athletes from the UK (N = 14) and US (N = 14). Transcripts were analysed using thematic analysis. Results: Addressing doping presents a true moral dilemma and is not a dichotomous process whereby athletes either report doping or do nothing. Instead, four options for addressing others’ PED use emerged: (1) confront PED user directly, (2) report to ‘someone’, (3) report to anti-doping ‘authorities’, or (4) ignore the behaviour. Underpinned by relational concerns and empathy, direct confrontation was participants’ preferred approach to addressing doping. Conclusion: Student-athletes are reluctant to blow the whistle on doping so the currently promoted method for reporting wrongdoing may be met with resistance. Instead, student-athletes indicate a willingness to personally confront PED users, which has the potential to protect both the doping athlete and whistleblower, while simultaneously reducing the presence of PEDs in sport. Thus, these findings serve to stimulate debate and discussion within anti-doping efforts regarding the possibility of confrontation being encouraged as an effective deterrent to sport doping
A Multicenter Observer Performance Study of 3D JPEG2000 Compression of Thin-Slice CT
The goal of this study was to determine the compression level at which 3D JPEG2000 compression of thin-slice CTs of the chest and abdomen–pelvis becomes visually perceptible. A secondary goal was to determine if residents in training and non-physicians are substantially different from experienced radiologists in their perception of compression-related changes. This study used multidetector computed tomography 3D datasets with 0.625–1-mm thickness slices of standard chest, abdomen, or pelvis, clipped to 12 bits. The Kakadu v5.2 JPEG2000 compression algorithm was used to compress and decompress the 80 examinations creating four sets of images: lossless, 1.5 bpp (8:1), 1 bpp (12:1), and 0.75 bpp (16:1). Two randomly selected slices from each examination were shown to observers using a flicker mode paradigm in which observers rapidly toggled between two images, the original and a compressed version, with the task of deciding whether differences between them could be detected. Six staff radiologists, four residents, and six PhDs experienced in medical imaging (from three institutions) served as observers. Overall, 77.46% of observers detected differences at 8:1, 94.75% at 12:1, and 98.59% at 16:1 compression levels. Across all compression levels, the staff radiologists noted differences 64.70% of the time, the resident’s detected differences 71.91% of the time, and the PhDs detected differences 69.95% of the time. Even mild compression is perceptible with current technology. The ability to detect differences does not equate to diagnostic differences, although perception of compression artifacts could affect diagnostic decision making and diagnostic workflow
Transkingdom Networks: A Systems Biology Approach to Identify Causal Members of Host-Microbiota Interactions
Improvements in sequencing technologies and reduced experimental costs have
resulted in a vast number of studies generating high-throughput data. Although
the number of methods to analyze these "omics" data has also increased,
computational complexity and lack of documentation hinder researchers from
analyzing their high-throughput data to its true potential. In this chapter we
detail our data-driven, transkingdom network (TransNet) analysis protocol to
integrate and interrogate multi-omics data. This systems biology approach has
allowed us to successfully identify important causal relationships between
different taxonomic kingdoms (e.g. mammals and microbes) using diverse types of
data
Client abuse to public welfare workers: theoretical framework and critical incident case study
We analyse a case study of workers’ experience of client abuse in a Danish public welfare organisation. We make an original contribution by putting forward two different theoretical expectations of the case. One expectation is that the case follows a pattern of customer abuse processes in a social market economy – in which worker are accorded power and resources, in which workers tend to frame the abuse as the outcome of a co-citizen caught in system failure, and in which workers demonstrate some resilience to abuse. Another expectation is that New Public Management reforms push the case to follow patterns of customer abuse associated with a liberal market economy – in which the customer is treated as sovereign against the relatively powerless worker, and in which workers bear heavy emotional costs of abuse. Our findings show a greater match to the social processes of abuse within a social market economy
Tenascin-C Enhances Pancreatic Cancer Cell Growth and Motility and Affects Cell Adhesion through Activation of the Integrin Pathway
Background: Pancreatic cancer (PDAC) is characterized by an abundant fibrous tissue rich in Tenascin-C (TNC), a large ECM glycoprotein mainly synthesized by pancreatic stellate cells (PSCs). In human pancreatic tissues, TNC expression increases in the progression from low-grade precursor lesions to invasive cancer. Aim of this study was the functional characterization of the effects of TNC on biologic relevant properties of pancreatic cancer cells. Methods: Proliferation, migration and adhesion assays were performed on pancreatic cancer cell lines treated with TNC or grown on a TNC-rich matrix. Stable transfectants expressing the large TNC splice variant were generated to test the effects of endogenous TNC. TNC-dependent integrin signaling was investigated by immunoblotting, immunofluorescence and pharmacological inhibition. Results: Endogenous TNC promoted pancreatic cancer cell growth and migration. A TNC-rich matrix also enhanced migration as well as the adhesion to the uncoated growth surface of poorly differentiated cell lines. In contrast, adhesion to fibronectin was significantly decreased in the presence of TNC. The effects of TNC on cell adhesion were paralleled by changes in the activation state of paxillin and Akt. Conclusion: TNC affects proliferation, migration and adhesion of poorly differentiated pancreatic cancer cell lines and migh
Modeling of interfacial intermetallic compounds in the application of very fine lead-free solder interconnections
Rat Adipose Tissue-Derived Stem Cells Transplantation Attenuates Cardiac Dysfunction Post Infarction and Biopolymers Enhance Cell Retention
Background: Cardiac cell transplantation is compromised by low cell retention and poor graft viability. Here, the effects of co-injecting adipose tissue-derived stem cells (ASCs) with biopolymers on cell cardiac retention, ventricular morphometry and performance were evaluated in a rat model of myocardial infarction (MI). Methodology/Principal Findings: (99m)Tc-labeled ASCs (1 x 10(6) cells) isolated from isogenic Lewis rats were injected 24 hours post-MI using fibrin a, collagen (ASC/C), or culture medium (ASC/M) as vehicle, and cell body distribution was assessed 24 hours later by gamma-emission counting of harvested organs. ASC/F and ASC/C groups retained significantly more cells in the myocardium than ASC/M (13.8+/-2.0 and 26.8+/-2.4% vs. 4.8+/-0.7%, respectively). Then, morphometric and direct cardiac functional parameters were evaluated 4 weeks post-MI cell injection. Left ventricle (LV) perimeter and percentage of interstitial collagen in the spare myocardium were significantly attenuated in all ASC-treated groups compared to the non-treated (NT) and control groups (culture medium, fibrin, or collagen alone). Direct hemodynamic assessment under pharmacological stress showed that stroke volume (SV) and left ventricle end-diastolic pressure were preserved in ASC-treated groups regardless of the vehicle used to deliver ASCs. Stroke work (SW), a global index of cardiac function, improved in ASC/M while it normalized when biopolymers were co-injected with ASCs. A positive correlation was observed between cardiac ASCs retention and preservation of SV and improvement in SW post-MI under hemodynamic stress. Conclusions: We provided direct evidence that intramyocardial injection of ASCs mitigates the negative cardiac remodeling and preserves ventricular function post-MI in rats and these beneficial effects can be further enhanced by administrating co-injection of ASCs with biopolymers.Fundacao de Amparo a Pesquisa do Estado de Sao Paulo (FAPESP)[01/0009-0]Fundacao de Amparo a Pesquisa do Estado de Sao Paulo (FAPESP)[05/54695-3]Fundacao de Amparo a Pesquisa do Estado de Sao Paulo (FAPESP)[04/06784-4]Ministerio da Ciencia e Tecnologia/Conselho Nacional de Desenvolvimento Cientifico e Tecnologico/Ministerio da Saude/Departamento Ciencia e Tecnologia (MCT/CNPq/MS/DECIT)[552324/20005-1]Ministerio da Ciencia e Tecnologia/Conselho Nacional de Desenvolvimento Cientifico e Tecnologico/Ministerio da Saude/Departamento Ciencia e Tecnologia (MCT/CNPq/MS/DECIT)[10120104096700]CNPq[141276/2004-5
Socioeconomic status, severity of disease and level of family members’ care in adult surgical intensive care patients: the prospective ECSSTASI study
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