Medicine and Health Sciences Commons^™

The Impact Of Power Training On Balance And Visual Feedback Removal, Juliana Bouton

Juliana Bouton

A Multidisciplinary Concept Analysis Of Empowerment : Implications For Nursing., Valerie Lander Mccarthy, Linda Holbrook Freeman

Valerie L. McCarthy

According to the Institute of Medicine, nursing has failed to effectively shape the health care system and to advocate successfully for patients. Empowerment may be a potent tool to fulfill these responsibilities, yet nurses have not benefited from considering application of the concept to the continuum of health care advocacy in their communities, in their relationships with clients, and in their professional roles within health care organizations. This paper uses concept analysis to examine the attributes, characteristics, and uses of empowerment within diverse disciplines to clarify its meaning and explore its potential application to nursing's challenges that cross settings, disciplines, …

Practical Applications Of Biomechanical Principles In Resistance Training: Neuromuscular Factors And Relationships, Jason Lake, Paul A. Swinton, Justin Keogh

Justin Keogh

This paper is the second in our three part series examining how a variety of biomechanical principles and concepts have direct relevance to the prescription of resistance training for the general and athletic populations as well as for musculoskeletal injury rehabilitation. In this paper, we considered different neuromuscular characteristics of resistance exercise. We started by defining the causes of motion, discussing force and Newton’s second law of linear motion. This led to discussion of impulse, and how its relationship with momentum can be used to study force-time curves recorded from different ground-based resistance exercises. This enables the sports biomechanist to …

The Acute Effects Of Moderately Loaded Concentric-Only Quarter Squats On Vertical Jump Performance, Aaron Crum, Naoki Kawamori, Michael Stone, Guy Haff

Greg Haff

2012-Limited research exists examining the effect of moderately loaded conditioning activities that are employed as part of a strength-power potentiating complex (SPPC). Additionally, no studies to date have explored the effects of using a concentric-only quarter back squat protocol as part of an SPPC. Therefore, the purpose of this study was to examine the effects of a moderately loaded (50-65% of 1RM) concentric-only quarter back squat protocol on the occurrence of potentiation effects at various time points. Twenty men who could quarter back squat a minimum of 2.4 times their body mass (3.7 ±: 0.7 kg-per body mass) participated in …

Relationship Between Strength, Power And Sprint Performance In Professional Cricketers, Matt Inness, Prue Cormie, Robert Newton

Prue Cormie

No abstract available.

Hybrid Nanomembranes For High Power And High Energy Density Supercapacitors And Their Yarn Application, Jae Ah Lee, Min-Kyoon Shin, Seon Jeong Kim, Geoffrey Maxwell Spinks, Gordon G. Wallace, Raquel Ovalle-Robles, Marcio D. Lima, Mikhail E. Kozlov, Ray H. Baughman

Gordon Wallace

Ultrathin (thicknessnm) electrically conducting membranes can be used as electrodes for sensors, actuators, optical devices, fuel cells, scaffolds for assembling nanoparticles, and separation of biological macromolecules.1-6 Various approaches have been suggested for the fabrication of free-standing nanomembranes based on organic polymers and/or inorganic materials: spin-casting of films,7 layer-by-layer assembly of polyelectrolyte multilayers,8 cross-linking of self-assembled monolayers,9 and assembly of triblock copolymers.10,11 Loading materials such as gold nanoparticles12 or carbon nanotubes13 make membranes robust and electrically conductive. However, these methods are often time-consuming and have some limitations in terms of achievable electrical and electrochemical membrane performance as well as scale-up. Alternative …

Leading And Leadership: Reflections On A Case Study., Pauline Joyce

Pauline Joyce

Aim: The aim of this case study was to explore if observing leaders in the context of their day-to-day work can provide an insight into how they lead in particular circumstances. Background: The study was carried out in small organisation which was set up five years ago. Methods: A case study methodology was used. Data was collected by field notes of non-participant and participant observations. Follow-up interviews were transcribed and analysed to contextualise the observations. A reflective diary was used by the researcher to add to the richness of the data. Results: The data demonstrates how the leader responded in …

The Role Of Rate Of Force Development On Vertical Jump Performance, Christopher Mclellan, Dale Lovell, Gregory Gass

Chris McLellan

The purpose of this study was to examine a) the relationship between rate of force development (RFD) and vertical jump (VJ) performance during a counter movement jump (CMJ), and b) the reliability of RFD recorded during the CMJ and squat jump (SJ) forms of the VJ. Twenty-three physically active men aged 23 ± 3.9 years participated in the study. Subjects completed 3 unloaded CMJ and 3 unloaded SJ in random order on a force plate. The RFD was measured during CMJ and SJ movements with vertical jump displacement (VJD) measured simultaneously during the CMJ only. Subjects incorporated arm swing to …

Effects Of Two Contrast Training Programs On Jump Performance In Rugby Union Players During A Competition Phase, Christos K. Argus, Nicholas D. Gill, Justin W. L. Keogh, Michael R. Mcguigan, Will G. Hopkins

Nicholas J Gill

Purpose: There is little literature comparing contrast training programs typically performed by team-sport athletes within a competitive phase. We compared the effects of two contrast training programs on a range of measures in high-level rugby union players during the competition season.Methods: The programs consisted of a higher volume-load (strength-power) or lower volume-load (speed-power) resistance training; each included a tapering of loading (higher force early in the week, higher velocity later in the week) and was performed twice a week for 4 wk. Eighteen players were assessed for peak power during a bodyweight countermovement jump (BWCMJ), bodyweight squat jump (BWSJ), 50 …

Storytelling And Violence Against Women, Janette Taylor, J. Banks-Wallace, Toni Tripp-Reimer

Janette Y. Taylor

Health professionals are frequently the first point of contact for many women who are abused and experience intimate male partner violence. Yet, practitioners often do not have the knowledge and/or feel prepared to address these issues with women. The authors propose the use of storytelling and literature as an educational strategy to challenge and change nurses' conceptualization and practices relative to abuse and violence against women.

Hovering Energetics And Thermal Balance In Anna's Hummingbirds (Calypte Anna), Dennis Evangelista, Maria J. Fernandez, Madalyn S. Berns, Aaron M. Hoover, Robert Dudley

Aaron M. Hoover

We studied the energetics of hover-feeding Anna's hummingbirds, using three different simultaneous techniques: heat loss as estimated via thermal imaging, metabolic rate as measured at a feeder mask using flow-through respirometry, and aerodynamic power estimated from wingbeat kinematic data. These three methods yielded comparable estimates of power output at ambient air temperatures ranging from 18 degrees to 26 degrees C, whereas heat imbalance at higher air temperatures (up to 34 degrees C) suggested loss by mechanisms other than convection and radiation from the body, such as evaporative cooling and enthalpy rise associated with exhaled air and excreted water and convective …

Sources Of Variability In Iso-Inertial Jump Assessments, Kristie-Lee Taylor, John Cronin, Nicholas Gill, Dale Chapman, Jeremy Sheppard

Nicholas J Gill

Purpose: This investigation aimed to quantify the typical variation for kinetic and kinematic variables measured during loaded jump squats. Methods: Thirteen professional athletes performed six maximal effort countermovement jumps on fouroccasions. Testing occurred over 2 d, twice per day (8 AM and 2 PM) separated by 7 d, with the same procedures replicated on each occasion. Jump height, peak power (PP), relative peak power (RPP), mean power (MP), peak velocity (PV), peak force (PF), mean force (MF), and peak rate of force development (RFD) measurements were obtained from a linear optical encoder attached to a 40 kg barbell. Results: A …

Effects Of Two Contrast Training Programs On Jump Performance In Rugby Union Players During A Competition Phase, Christos K. Argus, Nicholas D. Gill, Justin W. L. Keogh, Michael R. Mcguigan, Will G. Hopkins

Justin Keogh

Purpose: There is little literature comparing contrast training programs typically performed by team-sport athletes within a competitive phase. We compared the effects of two contrast training programs on a range of measures in high-level rugby union players during the competition season.

Methods: The programs consisted of a higher volume-load (strength-power) or lower volume-load (speed-power) resistance training; each included a tapering of loading (higher force early in the week, higher velocity later in the week) and was performed twice a week for 4 wk. Eighteen players were assessed for peak power during a bodyweight countermovement jump (BWCMJ), bodyweight squat …

Controveries Column. Critical Theory And Rogerian Science: Incommensurable Or Reconcilable, Howard Butcher

Howard K. Butcher

No abstract provided.

Living In The Heart Of Helicy: An Inquiry Into The Meaning Of Compassion And Unpredictability Within Rogers' Nursing Science, Howard Butcher

Howard K. Butcher

Rogers used the term "compassion" throughout her writings, however, there has been no inquiry into the meaning of compassion within a unitary perspective. In addition, while unpredictability is a core feature of helicy, there have been no inquiries specifically into what it means to participate knowingly in a human-environmental mutual process characterized by unfolding patterns of unpredictability. The heart is both a symbol of compassion and a vortex of energy characterized by turbulence and unpredictability. The purpose of this paper is to explore the meaning of the metaphor "living in the heart of helicy" as a method to illuminate the …

The Rules Of The Game: Interprofessional Collaboration On The Intensive Care Unit Team, Lorelei Lingard, Sherry Espin, Cathy Evans, Laura Hawryluck

Lorelei Lingard

BACKGROUND: The intensive care unit (ICU) is a nexus for interspecialty and interdisciplinary tensions because of its pivotal role in the care of the hospital's most critically ill patients and in the management of critical care resources. In an environment charged with temporal, financial and professional tensions, learning how to get results collaboratively is a critical aspect of professional competence. This study explored how team members in the ICU interact to achieve daily clinical goals, delineate professional boundaries and negotiate complex systems issues. METHODS: Seven 1-hour focus groups were conducted with ICU team members in two hospitals. Participants consisted of …

Silence, Power And Communication In The Operating Room, Fauzia Gardezi, Lorelei Lingard, Sherry Espin, Sarah Whyte, Beverley Orser, G. Baker

Lorelei Lingard

Aim.  This paper is a report of a study conducted to explore whether a 1- to 3-minute preoperative interprofessional team briefing with a structured checklist was an effective way to support communication in the operating room.

Background.  Previous research suggests that nurses often feel constrained in their ability to communicate with physicians. Previous research on silence and power suggests that silence is not only a reflection of powerlessness or passivity, and that silence and speech are not opposites, but closely interrelated.

Methods.  We conducted a retrospective study of silences observed in communication between nurses and surgeons in a multi-site observational …

Combining A Strength And Power Program For Semi-Professional Footballers (Afl), Christopher Joyce

Christopher Joyce