1,009 research outputs found
Comparative Analyses of Two Methods of Backstroke Starting: Conventional and Whip
Generally, when a new skill, technique, or style is introduced into a sport, the first attempt to describe the change is by the coach or athlete. The biomechanist will then make a careful review of the mechanics involved, test the principles against the given theory, propose directions for future improvements, or reject the change. This procedure often occurs in the sport of swimming.
During the last decade, techniques of competitive swimming have improved, resulting in several record-producing performances by the swimmers. This improvement may be attributed, in part, to coaches, researchers, and authors like Counsilman (1977) and Maglischo (1982), Hay (1985), Kreighbaum and Barthels (1985), among others. Backstroke swimming techniques have benefited from the investiveness of coaches, swimmers, and researchers. Probably much of the credit for initiating change in technique belongs to the backstrokers of the time. Two examples are Olympic champions John Naber in 1976 with his «headabove-water spin» turn and Rick Carey in 1984 with his «whip» start. These methods of turning and starting have been adopted by many coaches and swimmers.
Even though the Naber turn and the Carey whip start have gained in popularity, little research has been conducted regarding the mechanics of such techniques. For instance, one of the few studies conducted was on the backstroke turns. Benson (1979) filmed two subjects: John Naber executing his unique turn and Peter Rocca (second to Naber in the 1976 Olympics) doing his standard backstroke turn. An elementary comparative eine analysis was made. Benson determined that the Naber turn was more efficient than the standard backstroke turn. Since scientific information about the backstroke whip start is limited. this study was conducted to fill that void and to serve as a basic for further research
The Trigonometric Rosen-Morse Potential in the Supersymmetric Quantum Mechanics and its Exact Solutions
The analytic solutions of the one-dimensional Schroedinger equation for the
trigonometric Rosen-Morse potential reported in the literature rely upon the
Jacobi polynomials with complex indices and complex arguments. We first draw
attention to the fact that the complex Jacobi polynomials have non-trivial
orthogonality properties which make them uncomfortable for physics
applications. Instead we here solve above equation in terms of real orthogonal
polynomials. The new solutions are used in the construction of the
quantum-mechanic superpotential.Comment: 16 pages 7 figures 1 tabl
Effects of Antecedent GABAA Activation With Alprazolam on Counterregulatory Responses to Hypoglycemia in Healthy Humans
Terbutaline and the Prevention of Nocturnal Hypoglycemia in Type 1 Diabetes
OBJECTIVEâBedtime administration of 5.0 mg of the ÎČ2-adrenergic agonist terbutaline prevents nocturnal hypoglycemia but causes morning hyperglycemia in type 1 diabetes. We tested the hypothesis that 2.5 mg terbutaline prevents nocturnal hypoglycemia without causing morning hyperglycemia
Hypoglycemia and Diabetes: A Report of a Workgroup of the American Diabetes Association and The Endocrine Society
OBJECTIVE To review the evidence about the impact of hypoglycemia on patients with diabetes that has become available since the past reviews of this subject by the American Diabetes Association and The Endocrine Society and to provide guidance about how this new information should be incorporated into clinical practice.
PARTICIPANTS Five members of the American Diabetes Association and five members of The Endocrine Society with expertise in different aspects of hypoglycemia were invited by the Chair, who is a member of both, to participate in a planning conference call and a 2-day meeting that was also attended by staff from both organizations. Subsequent communications took place via e-mail and phone calls. The writing group consisted of those invitees who participated in the writing of the manuscript. The workgroup meeting was supported by educational grants to the American Diabetes Association from Lilly USA, LLC and Novo Nordisk and sponsorship to the American Diabetes Association from Sanofi. The sponsors had no input into the development of or content of the report.
EVIDENCE The writing group considered data from recent clinical trials and other studies to update the prior workgroup report. Unpublished data were not used. Expert opinion was used to develop some conclusions.
CONSENSUS PROCESS Consensus was achieved by group discussion during conference calls and face-to-face meetings, as well as by iterative revisions of the written document. The document was reviewed and approved by the American Diabetes Associationâs Professional Practice Committee in October 2012 and approved by the Executive Committee of the Board of Directors in November 2012 and was reviewed and approved by The Endocrine Societyâs Clinical Affairs Core Committee in October 2012 and by Council in November 2012.
CONCLUSIONS The workgroup reconfirmed the previous definitions of hypoglycemia in diabetes, reviewed the implications of hypoglycemia on both short- and long-term outcomes, considered the implications of hypoglycemia on treatment outcomes, presented strategies to prevent hypoglycemia, and identified knowledge gaps that should be addressed by future research. In addition, tools for patients to report hypoglycemia at each visit and for clinicians to document counseling are provided
Type 1 Diabetic Drivers With and Without a History of Recurrent HypoglycemiaâRelated Driving Mishaps: Physiological and performance differences during euglycemia and the induction of hypoglycemia
The practices of apartheid as a war crime: a critical analysis
The human suffering caused by the political ideology of apartheid in South Africa during the Apartheid era (1948-1994) prompted worldwide condemnation and a variety of diplomatic and legal responses. Amongst these responses was the attempt to have apartheid recognised both as a crime against humanity in the 1973 Apartheid Convention as well as a war crime in Article 85(4)(c) of Additional Protocol I. This article examines the origins, nature and current status of the practices of apartheid as a war crime and its possible application to the Israeli-Palestinian conflict
Glucagon Supports Postabsorptive Plasma Glucose Concentrations in Humans With Biologically Optimal Insulin Levels
- âŠ