scholarly journals Iron Metabolism: Interactions with Energy and Carbohydrate Availability

Nutrients ◽  
2020 ◽  
Vol 12 (12) ◽  
pp. 3692
Author(s):  
Alannah K. A. McKay ◽  
David B. Pyne ◽  
Louise M. Burke ◽  
Peter Peeling
Keyword(s):  
Iron Metabolism ◽  
Iron Status ◽  
Performance Outcomes ◽  
Current Evidence ◽  
Future Directions ◽  
Nutritional Recommendations ◽  
And Performance ◽  
Fat Diets ◽  
Response To Exercise ◽  
The Impact

The provision or restriction of select nutrients in an athlete’s diet can elicit a variety of changes in fuel utilization, training adaptation, and performance outcomes. Furthermore, nutrient availability can also influence athlete health, with one key system of interest being iron metabolism. The aim of this review was to synthesize the current evidence examining the impact of dietary manipulations on the iron regulatory response to exercise. Specifically, we assessed the impact of both acute and chronic carbohydrate (CHO) restriction on iron metabolism, with relevance to contemporary sports nutrition approaches, including models of periodized CHO availability and ketogenic low CHO high fat diets. Additionally, we reviewed the current evidence linking poor iron status and altered hepcidin activity with low energy availability in athletes. A cohesive understanding of these interactions guides nutritional recommendations for athletes struggling to maintain healthy iron stores, and highlights future directions and knowledge gaps specific to elite athletes.

scholarly journals Enhancing Employees’ Performance through Organizational Care Policies in the Health Care Context

2018 ◽  
Vol 7 (1) ◽  
pp. 5
Author(s):  
Andrea Tomo ◽  
Lucio Todisco
Keyword(s):  
Health Care ◽  
Well Being ◽  
Employee Motivation ◽  
Performance Outcomes ◽  
Monetary Incentives ◽  
Work Involvement ◽  
Health Care Context ◽  
And Performance ◽  
Conceptual Study ◽  
The Impact

Literature is increasingly recognizing that organizations must combine themes of care and concern with more established economic objectives. This conceptual study will expand on this literature by considering how expressions of organizational care toward employees, by improving their well-being, may influence their motivation, work involvement and, in turn, improve performance. In more detail, by extending the conceptual framework developed by Bonner & Sprinkle (2001), it is argued that managers should take into account the impact, not only of monetary and non-monetary incentives, but even of other caring policies, on employee motivation and performance outcomes. On this ground, this study develops a theoretical model on how organizational care may help employees in expressing their work potential and enhancing their performance. The model is developed within the health care context since its particular setting that strongly affects employees’ well-being.

Job insecurity and performance in public and private sectors: a moderated mediation model

2020 ◽  
Vol 7 (2) ◽  
pp. 237-253
Author(s):  
Antonio Chirumbolo ◽  
Antonino Callea ◽  
Flavio Urbini
Keyword(s):  
Job Insecurity ◽  
Moderated Mediation ◽  
Performance Outcomes ◽  
Economic Sector ◽  
Mediation Model ◽  
Content Type ◽  
Moderated Mediation Model ◽  
And Performance ◽  
The Impact ◽  
The Relationship

PurposeThe purpose of this study was to extend our knowledge of the relationship between quantitative and qualitative job insecurity and performance. On the basis of stress theories, we hypothesised that qualitative job insecurity (QLJI) would mediate the negative effect of quantitative job insecurity (QTJI) on two different indicators of performance: task performance (TP) and counterproductive work behaviours (CPWBs). In addition, the authors hypothesised that the effect of QTJI on QLJI would be moderated by the economic sector (public vs private) in which employees worked. Therefore, the authors empirically tested a moderated mediation model via PROCESS.Design/methodology/approachParticipants were 431 employees from various Italian organisations. Data were collected using a self-report questionnaire measuring QTJI, QLJI, TP and CPWBs.FindingsThe results indicated that economic sector moderated the relationship between quantitative and QLJI. Both quantitative and QLJI were related to performance outcomes. Furthermore, QLJI mediated the effect of QTJI on TP and CPWB. However, this mediation was particularly apparent among employees in the private sector, supporting our hypothesised moderated mediation model.Practical implicationsThe results suggest that managers of private and public organisations need to apply different policies to reduce the impact of job insecurity on CPWBs and increase the TP of their employees.Originality/valueThis study attempted to examine the job insecurity–performance relationship in more depth. For the first time, the effects of both job insecurity dimensions on performance were simultaneously investigated, with economic sector as a moderator and QLJI as a mediator.

Variables and Outcomes in Patient Room Design: A Study of Design Hypotheses

2020 ◽  
pp. 193758672095495
Author(s):  
Valerie Greer ◽  
Emily Johnson ◽  
Josephine Hsu
Keyword(s):  
Performance Outcomes ◽  
Observation Data ◽  
Patient Room ◽  
Design Elements ◽  
Design Variables ◽  
Strategic Approach ◽  
Room Design ◽  
And Performance ◽  
Clinical Interactions ◽  
The Impact

Objective: Research was conducted to evaluate the correlation between design hypotheses and performance outcomes in single-occupancy patient rooms. Background: Health environments host complex interactions between patients and clinicians, and patient rooms offer a unique lens to understanding the impact of design on interactions and outcomes. This places importance on articulating, measuring, and assessing design hypotheses. This study of documented strategies and measured outcomes in patient room design investigates the relationship between design variables and clinical interactions. Methods: Design hypotheses were identified for the strategic approach to four key elements of patient room design: the room configuration, charting location, personal protective equipment (PPE) supply, and mobile supply cart. Researchers collected observational data from existing and newly constructed patient rooms in order to evaluate performance outcomes related to design hypotheses. Results: Observation data supported hypotheses behind three of the four design components and revealed greater insight into how design variables impacted interactions in patient rooms. Conclusions: The study identified a distinction between “fixed” design elements, such as the configuration of the patient room, and “dynamic” elements such as the design of the mobile cart. This was more prevalent in evaluating the use of supply carts and PPE cabinets, which may be more influenced by training, while the room configuration and charting location require little training to benefit both clinicians and patients. This study points to the value of research that evaluates correlations between design hypotheses and outcomes in healthcare design.

scholarly journals MULTIPLE-UNIT FRANCHISING AND PERFORMANCE OUTCOMES

2013 ◽  
Vol 14 (Supplement_1) ◽  
pp. S279-S312 ◽  
Author(s):  
Kelli Bodey ◽  
Scott Weaven ◽  
Debra Grace
Keyword(s):  
Research Direction ◽  
Performance Outcomes ◽  
Future Research ◽  
Governance Structures ◽  
Growth System ◽  
Managerial Implications ◽  
Wide Adaptation ◽  
Multiple Unit ◽  
And Performance ◽  
The Impact

The economic and social contribution of franchising is widely reported. Although, most studies have examined franchising from the single-unit typology, multiple-unit franchising is found to be a popular and pervasive retailing strategy throughout the world. Despite this, there is a paucity of prior research examining the factors influencing the achievement of the four franchising imperatives. This represents an important gapin the organizational choice literature. Therefore, this study empirically examines the impact of the four franchising imperatives (i.e. unit growth, system uniformity, local responsiveness and system wide adaptation) (Bradach 1995) upon franchise system operational performance across the four key governance structures (i.e. master franchising, area development franchising, area representative franchising and incremental franchising). Based on a sample of 347 Australian franchisors, the findings indicate that there are significant differences in the way in which three of the four imperatives (i.e. unit growth, system uniformity and system-wide adaptation) impact on performance across different governance structures. Practical and managerial implications and future research direction are discussed.

scholarly journals Bariatric Surgery in Adults with Obesity: the Impact on Performance, Metabolism, and Health Indices

2021 ◽  
Author(s):  
Georges Jabbour ◽  
Ahmad Salman
Keyword(s):  
Systematic Review ◽  
Bariatric Surgery ◽  
Health Indicators ◽  
Fat Free Mass ◽  
Current Evidence ◽  
Health Indices ◽  
Post Surgery ◽  
And Performance ◽  
Fitness And Health ◽  
The Impact

AbstractThis systematic review summarizes current evidence on the impact of bariatric surgery (BS) on physical performance, metabolic, and health indices in adults with obesity. This systematic review suggests that BS induced significant reductions in body weight, fat mass, and fat-free mass in individuals with obesity. Additionally, BS may improve many physical fitness and health indicators. Observed improvements manifest during a distinct period of time. To date, studies on BS and performance have been small in number, nonrandomized in design, and not controlled regarding gender distribution and/or post-surgery follow-up. Future studies should further investigate concerns associated with understanding of BS outcomes to improve these outcomes with potential benefits for quality of life, disability, mortality, morbidity, and overall BS success.

Hepatic Hepcidin Protects against Polymicrobial Sepsis in Mice by Regulating Host Iron Status

2015 ◽  
Vol 122 (2) ◽  
pp. 374-386 ◽  
Author(s):  
CongLi Zeng ◽  
QiXing Chen ◽  
Kai Zhang ◽  
QingHua Chen ◽  
ShengWen Song ◽  
...  
Keyword(s):  
Iron Metabolism ◽  
Iron Content ◽  
Liver Diseases ◽  
Inflammatory Responses ◽  
Iron Status ◽  
Cecal Ligation ◽  
Polymicrobial Sepsis ◽  
Iron Level ◽  
Hepcidin Expression ◽  
The Impact

Abstract Background: Hepcidin is a master regulator of iron metabolism primarily produced by the liver. Markedly increased hepcidin levels have been observed in septic individuals, while decreased hepatic hepcidin expression has been demonstrated in liver diseases that tend to develop into sepsis. However, the role of liver hepcidin in sepsis remains unknown. Methods: Mouse hepatic hepcidin expression was silenced using adenovirus-mediated hepcidin-specific short hairpin RNA injected via the tail vein. Sepsis was induced by cecal ligation and puncture, and the outcome (n = 23 for hepcidin knockdown mice, n = 15 for controls) and pathogenic changes (n = 5) related to sepsis were evaluated. The impact of alteration of iron status on the survival rate of hepatic hepcidin knockdown mice (n = 18 to 19) was also investigated. Results: Disruption of liver hepcidin expression increased serum iron level (537.8 ± 28.1 μg/dl [mean ± SD] vs. 235.9 ± 62.2 μg/dl; P < 0.05) and reduced iron content in the spleen macrophages at the steady state. Hepatic hepcidin knockdown mice not only showed increased 7-day mortality (73.9% vs. 46.7%; P < 0.05), but also had exacerbated organ damage and oxidative stress, as well as compromised host inflammatory responses and bacterial clearance at 24 h after polymicrobial sepsis. Treating the hepatic hepcidin knockdown mice with low-iron diet plus iron chelation decreased systemic iron content (serum level: 324.0 ± 67.4 μg/dl vs. 517.4 ± 13.4 μg/dl; P < 0.05) and rescued the mice from lethal sepsis (7-day survival: 36.8% vs. 83.3%; P < 0.01). Conclusions: Hepatic hepcidin plays an important role in sepsis through regulation of iron metabolism. The findings may have potential therapeutic implications for liver diseases in which hepcidin expression is decreased.

scholarly journals The Athletic Intelligence Quotient and Performance Outcomes in Professional Baseball

2021 ◽  
Vol 12 ◽  
Author(s):  
James Kenneth Bowman ◽  
R. Thomas Boone ◽  
Scott Goldman ◽  
Alex Auerbach
Keyword(s):  
Intelligence Quotient ◽  
Sport Performance ◽  
Performance Outcomes ◽  
Professional Baseball ◽  
Minor League Baseball ◽  
Subsequent Performance ◽  
Minor League ◽  
Coaching Process ◽  
And Performance ◽  
The Impact

The focus on quantifiable data in sport performance has led to incremental advantages in baseball and has played an important role in the development of new hitting, pitching, fielding, and coaching strategies. Recently, researchers and team representatives have considered the impact of additional factors in baseball, including cognitive functioning. In this study, predictive validity for the Athletic Intelligence Quotient (AIQ) was examined vis-à-vis performance outcomes in professional baseball. Specifically, AIQ scores were obtained from 149 Minor League Baseball (MiLB) players prior to the 2014 baseball season and their subsequent performance was assessed through traditional and newly emphasized baseball statistics. Using hierarchical multiple regression, it was demonstrated that the AIQ predicted statistically significant relationships with hitting and pitching statistics, after controlling for other variables. Given the recent impact of analytics in professional sports, the potential importance of the AIQ in the selection and coaching process was discussed.

Acupuncture and in vitro fertilisation research: Current and future directions

2018 ◽  
Vol 36 (2) ◽  
pp. 117-122 ◽  
Author(s):  
Lee E Hullender Rubin ◽  
Belinda J Anderson ◽  
LaTasha B Craig
Keyword(s):  
Stress Reduction ◽  
Endometrial Thickness ◽  
Current Evidence ◽  
In Vitro Fertilisation ◽  
Future Directions ◽  
Acupuncture Intervention ◽  
Related Stress ◽  
The Impact ◽  
Improve Patient

Background Acupuncture is a common adjuvant treatment to support patients undergoing in vitro fertilisation (IVF). However, the impact of acupuncture and the different roles it can play in IVF remain unclear. Objective In this paper, we present an overview and critique of the current evidence on acupuncture's impact on IVF-related stress, describe harms, and propose future directions for investigation. Conclusion Two to three acupuncture sessions performed on or around the day of embryo transfer are insufficient interventions to improve IVF birth outcomes but provide significant IVF-related stress reduction. Research investigating acupuncture to support IVF is heterogeneous and confounded by the lack of an appropriate comparator. However, evidence suggests several acupuncture sessions improve endometrial thickness, reduce stress, and improve patient satisfaction. Observational studies suggest more sessions are associated with increases in clinical pregnancy and live birth rates. An optimised acupuncture intervention with a reasonable comparator is necessary for future studies, with evidence-based guidance on technique and number of sessions. Acupuncture should not be rejected as an adjuvant therapy for IVF, but more studies are needed to clarify acupuncture's role in supporting IVF cycles.

Reward, Task Motivation, Creativity, and Teaching: Towards a Cross-Cultural Examination

2015 ◽  
Vol 117 (10) ◽  
pp. 1-28 ◽  
Author(s):  
Beth A. Hennessey
Keyword(s):  
Intrinsic Motivation ◽  
Performance Outcomes ◽  
Cross Cultural ◽  
School Students ◽  
Task Motivation ◽  
Experimental Constraint ◽  
And Performance ◽  
Experimental Findings ◽  
And Control ◽  
The Impact

Background Extrinsic incentives and constraints, such as the promise of a reward or the expectation of an evaluation, have long been used by educators to motivate students. Previous research has consistently found that expected reward consistently undermines intrinsic task motivation and creativity of products and performance in students of all ages. For a majority of learners, the promise of a reward made contingent on engagement in an open-ended task frequently serves to undermine intrinsic task motivation and qualitative aspects of performance, including creativity. Purpose The implications of these experimental findings for education in the U.S. and around the world are immense. Teachers contemplating the use of reward incentives must avoid them in situations where creativity is at stake. This article explores whether the motivational and performance processes triggered by the promise of a reward are a universal phenomenon or whether they are, at least in part, culturally-dependent. Research Design Five parallel studies in five separate nations focused on elementary school students who had been randomly assigned to experimental (constraint) and control (no constraint) conditions. The complexities of the relation between task motivation and performance outcomes are reviewed and cross-cultural implications are explored. Conclusions While there is no consensus on the impact of extrinsic constraints across cultures, there is no evidence to suggest that intrinsic motivation is anything but a powerful and positive driving force for students of all ages and backgrounds—teachers are best advised to work to increase the intrinsic motivation and creativity of their students on a case-by-case basis until we understand more.

Paradoxes in supplier’s uptake of GSCM practices: institutional drivers and buyer dependency

2019 ◽  
Vol 31 (3) ◽  
pp. 479-500
Author(s):  
Sajad Fayezi ◽  
Rebecca Stekelorum ◽  
Jamal El Baz ◽  
Issam Laguir
Keyword(s):  
Resource Dependence ◽  
Institutional Environment ◽  
Resource Dependence Theory ◽  
Performance Outcomes ◽  
Equation Modeling ◽  
Content Type ◽  
And Performance ◽  
The Impact ◽  
Institutional Drivers

Purpose The purpose of this paper is to investigate the impact of institutional drivers and buyer dependency on green supply chain management (GSCM) practices and performance of suppliers. Design/methodology/approach The authors draw on institutional theory and resource dependence theory to construct a conceptual model than links institutional drivers, GSCM practices, buyer dependency and performance outcomes. The authors test the hypotheses using partial least squares structural equation modeling applied to a sample of suppliers in the Australian manufacturing sector. Findings The results confirm that suppliers develop GSCM practices of green sourcing and eco-design to enhance their performance in response to both coercive forces and voluntary behaviors of their institutional environment. However, buyer dependence of suppliers explains important paradoxes in their uptake of GSCM practices. For example, while the institutional drivers encourage greater adoption of green sourcing by suppliers, increase in buyer dependence in turn reduces the positive performance outcome of green sourcing. Practical implications The authors establish that understanding and assessment of the role of buyer dependency is critical for managers in charge of GSCM practices of their company. This enables practitioners to proactively manage paradoxes resulting from institutional drivers and buyer dependency through an informed decision on the type of GSCM practice to be adopted for effectuating performance improvement. Originality/value The authors provide empirical evidence on paradoxes that curtail performance associated with the uptake of GSCM practices by suppliers moving beyond institutional environment by considering the role of buyer dependency.

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