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Progress and Challenges in Objectively Measuring Bone-Strengthening Physical Activity
Shelby L. Francis, M.A.,Kathleen F. Janz, Ed.D. 국민체육진흥공단 한국스포츠정책과학원 2016 International Journal of Applied Sports Sciences Vol.28 No.2
Osteoporosis is characterized by a loss of bone density and strength resulting in increased risk of fracture. One promising method for preventing fractures is participation in bone-strengthening physical activity. While the importance of mechanical loading for bone health is understood, assessment strategies are limited. Most researchers measure metabolic loads rather than mechanical loads, but not all activities that improve metabolic health increase bone strength. The osteogenic properties of physical activity (e.g., magnitude of the load, rate at which the load is applied, dynamic and odd nature of the load, duration of loading session, and breaks between sessions) have not traditionally been directly measured in health outcomes and surveillance research. The lack of research in this area has slowed our understanding of exactly what dose of bone-strengthening physical activity to recommend to the public as well as how to prescribe exercise to reduce the risk of fractures. To understand the influence of mechanical loading on bone adaptation, measurement methods must capture multiple physical activity dimensions (intensity, frequency, and time). Advancements in accelerometer technology now allow for the measurement of these dimensions. It is time that the lessons learned from using accelerometers in cardiometabolic health outcomes research be applied to musculoskeletal health.
Shelby D. Hunt 한국마케팅과학회 2018 마케팅과학연구 Vol.28 No.1
All marketing research requires philosophy of science foundations. That is, every marketing research project presumes an ontology (what entities – the referents of the constructs – does the research assume to have real existence?), a methodology (what procedures are to be followed for good research?), and an epistemology (how are the knowledge claims of the research to be properly evaluated?). This article argues for scientific realism and the inductive realist models of theory status and generation as providing an appropriate philosophy of science foundation for marketing research. The article (1) explicates the nature of scientific realism, (2) discusses the advantages for marketing researchers of using it as a philosophical foundation, (3) points out three major problems associated with scientific realism, which are labeled the problems of “approximate truth,”“sociological/ political factors,” and “theory development,” (4) reviews the inductive realist model of theory status and shows how it can address the first two problems, (5) reviews the inductive realist model of theory generation and shows how it can address the third problem, and (6) concludes with an invitation for readers to propose viable alternatives to scientific realism so that productive discussion on the philosophical foundations issue can take place.
The nature and origins of impactful research in marketing
Shelby D. Hunt 한국마케팅과학회 2021 마케팅과학연구 Vol.31 No.2
This article (1) explores the nature and origins of “high impact” (i.e., highly cited) articles in marketing, (2) argues that a major factor is that highly cited articles frequently are the result of their authors’ executing time-consuming, research programs, rather than simply working on individual articles that appear to be immediately publishable, (3) develops a “six-stage model” of programmatic research, and (4) illustrates the six-stage model by means of the author’s “marketing theory” research program.
Evaluating the progenitor cells of ovarian cancer: analysis of current animal models
( Shelby M. King ),( Joanna E. Burdette ) 생화학분자생물학회(구 한국생화학분자생물학회) 2011 BMB Reports Vol.44 No.7
Serous ovarian cancer is one of the most lethal gynecological malignancies. Progress on effective diagnostics and therapeutics for this disease are hampered by ambiguity as to the cellular origins of this histotype of ovarian cancer, as well as limited suitable animal models to analyze early stages of disease. In this report, we will review current animal models with respect to the two proposed progenitor cells for serous ovarian cancer, the ovarian surface epithelium and the fallopian tube epithelium.
Progress and Challenges in Objectively Measuring Bone-Strengthening Physical Activity
( Shelby L. Francis ),( Kathleen F. Janz ) 한국스포츠정책과학원(구 한국스포츠개발원) 2016 International Journal of Applied Sports Sciences Vol.28 No.2
Osteoporosis is characterized by a loss of bone density and strength resulting in increased risk of fracture. One promising method for preventing fractures is participation in bone-strengthening physical activity. While the importance of mechanical loading for bone health is understood, assessment strategies are limited. Most researchers measure metabolic loads rather than mechanical loads, but not all activities that improve metabolic health increase bone strength. The osteogenic properties of physical activity (e.g., magnitude of the load, rate at which the load is applied, dynamic and odd nature of the load, duration of loading session, and breaks between sessions) have not traditionally been directly measured in health outcomes and surveillance research. The lack of research in this area has slowed our understanding of exactly what dose of bone-strengthening physical activity to recommend to the public as well as how to prescribe exercise to reduce the risk of fractures. To understand the influence of mechanical loading on bone adaptation, measurement methods must capture multiple physical activity dimensions (intensity, frequency, and time). Advancements in accelerometer technology now allow for the measurement of these dimensions. It is time that the lessons learned from using accelerometers in cardiometabolic health outcomes research be applied to musculoskeletal health.
Yansi Foong(Yansi Foong ),Shelby Browning(Shelby Browning ),Jeffrey Seay(Jeffrey Seay ) 적정기술학회 2022 적정기술학회지(Journal of Appropriate Technology) Vol.8 No.3
Combating the environmental crisis caused by mismanaged plastic waste is a global challenge, especially in developing regions due to a lack of recycling availability and waste management infrastructure. One way communities can combat this challenge is by using the process of slow pyrolysis to convert plastic waste into liquid cooking fuel. Using this fuel in cookstoves can help combat the public health issue caused by breathing in smoke from a cooking fire. Open fire cooking remains a common means of cooking in the developing world, and long-term exposure to smoke can lead to chronic lung and eye health problems. The burden of these health problems falls disproportionately on women. Our hypothesis is that switching from wood fire cooking to using stoves fueled by liquid fuel produced from waste plastic will have a positive impact on indoor air pollution, including particulate matter, sulfur dioxide, and carbon monoxide. To test this hypothesis, a series of experiments to measure particulate emissions, sulfur dioxide, and carbon monoxide were conducted. Cookstoves similar to those used in households in developing countries were used when conducting experiments. The results of these experiments indicated that polyfuel produces less particulate than fire wood, with an average PM2.5 of 7.7 μg/ m3 compared with fire wood which had a PM2.5 of 325.6 μg/m3. Polyfuel also produces no sulfur dioxide emissions. Kerosene, which is a traditional cooking fuel in much of the world, produced sulfur dioxide emissions of 5.2 ppm under the experimental conditions. If implemented globally, the results of this research suggest that converting plastic waste into cooking fuel can not only reduce the amount of plastic waste entering the ecosystem but can also combat the global public health problems caused by open fire cooking.