Grand Canyon University

Postexercise hypotension (PEH) is a well-established cardiovascular benefit of acute exercise, yet the influence of recovery posture on hemodynamic mechanisms remains understudied. This study investigated how different recovery positions affect postexercise cardiovascular responses. Ten healthy adults (23.1±6.8 years, Body Mass Index [BMI] 24.5±3.7 kg/m2) completed a randomized crossover trial comparing four conditions: control (no exercise), and high-intensity interval exercise followed by supine, seated, or standing recovery. Cardiovascular parameters of blood pressure, heart rate, stroke volume, and systemic vascular resistance were measured continuously for 60 minutes postexercise. Standing recovery produced the greatest heart rate increase (61.5%) versus supine (18.5%, P<0.001). Stroke volume showed significant condition × pre-/postexercise interactions (F<inf>(3, 2097)</inf>=134.219, P<0.001), with standing recovery causing dramatic reductions (-69.6%) compared to supine (+0.1%) and seated (-20.3%). Cardiac output interactions were significant (F<inf>(3, 2097)</inf>=45.292, P<0.001), with standing decreasing (-21.4%) while supine increased (+19.0%). Systemic vascular resistance demonstrated significant interactions (F<inf>(3, 2097)</inf>=55.977, P<0.001), increasing markedly during standing (+31.9%) while decreasing during supine recovery (-17.7%). Diastolic blood pressure showed significant condition × pre-/postexercise interactions (F<inf>(3, 592)</inf>=4.512, P=0.004), with standing producing the highest increase (+8.9%). Recovery posture significantly influences postexercise cardiovascular responses through gravitational effects on blood distribution. Standing recovery attenuates hypotensive benefits due to orthostatic stress, while supine recovery optimizes acute blood pressure reduction.

Sustainable operations management has gained prominence in the world's industrial strategy, particularly in the manufacturing industry, due to the apprehension of the resources and the environment that the world is experiencing. Practices of circular economy (CE) with their focus on reuse, recycling, and remanufacturing, and low consumption provide a structural transition out of the conventional linear model of take-make-dispose. This study is a comparative research paper based on the analysis of the sustainable manufacturing practices using data about the 100 most sustainable corporations. The aim is to assess how the major international manufacturing corporations are applying the principles of the circular economy to their manufacturing process and governing systems. This paper lists some important data amongst the dataset, such as sustainability revenue percent, ESG (Environmental, Social, and Governance) ratings, CEO compensation ratios, and measures of leadership diversity like women in the executive management and board representation. These variables are used as proxies of circularity, social responsibility, and ethical governance. Filtered data is refined on the basis that only corporations that deal with manufacturing industries are covered, including industries dealing with electronics, waste management, and materials manufacturing. The analysis of descriptive analytics and visualizations (bar charts, scatter plots, and box plots) provides evidence of a lot of differences in circular economy performance across the manufacturing sub-sectors. The waste management and electronics companies increase the percentage of revenue on sustainability and have better ESG ratings, whereas many companies need to improve the gender diversity situation. There are also analytical findings indicating that there might be a relationship between inclusive leadership and a high level of performance in sustainability. The results show that although most manufacturing companies in the world are on the path to becoming circular, the amount of implementation is still variable and tends to vary with the industry, even geographical region, and policy maturity within the company. The challenges relate to technological constraints, an unbalanced regulatory framework, and investments in the sphere of circular infrastructure and disclosures. The contribution of this study to the scholarship is the presentation of empirical, comparative information on the practice of the circular economy in the manufacturing industries using a global perspective. It also provides strategic solutions on how sustainability performance can be improved by associating executive compensation with ESG targets, encouraging diversity at the leadership level, and incorporating circularity in designing the lifecycle of products. This study accentuates the importance of sustainable operating management in contributing to the realization of world climate objectives, enhancing firm responsibility, and long-threatened industrial stability.

Cardiovascular diseases (CVDs) represent a leading global health burden, with risk factors often emerging during college years. Traditional assessment methods like Body Mass Index (BMI) have significant limitations in predicting health outcomes. This study evaluated the relationship between Fitness-Fatness Index (FFI) and cardiovascular outcomes in college-aged students compared to traditional measures. A correlational-predictive non-experimental survey was conducted with 218 healthy, non-smoking young adults (109 male, 109 female; age 20.8±2.9 years). Participants underwent comprehensive anthropometric assessments, body composition analysis, aerobic fitness tests, and cardiovascular measurements, including brachial/central blood pressure and arterial stiffness parameters. Multiple linear regression analysis revealed that metabolic equivalents (METS) were the strongest predictor of arterial stiffness parameters, with the highest beta coefficients for augmentation pressure (β=-0.407, p=0.002), augmentation index (β=-0.398, p<0.001), and pulse wave velocity (β=-0.234, p=0.006). The waist-to-height ratio was the strongest predictor of adjusted brachial systolic blood pressure (β=0.159, p=0.016), while FFI was the strongest predictor of central diastolic blood pressure (β=-0.306, p<0.001). These findings indicate cardiorespiratory fitness is a key determinant of arterial stiffness in college-aged individuals, challenging the hypothesis that FFI would outperform traditional measures. Incorporating both METS and FFI may provide more comprehensive cardiovascular risk assessment in this population.

Rooted in Rusbult’s investment theory, the goal of the current study is to understand how and why temporary breakups in romantic relationships are associated with consequences for psychological and physiological well-being. This cross-sectional, quantitative study required participants who experienced a temporary break to complete an online survey detailing their self-esteem and health habits during the temporary break (N = 110). Regression analyses revealed that how and why people engaged in temporary breakups were associated with physiological health. Independent samples t-test revealed that self-esteem during a temporary breakup was significantly lower than before or after the temporary breakup.

This chapter introduces the reader to emancipatory education within the institute of higher education. Emancipatory education is an approach that empowers learners by promoting critical thinking, autonomy, and social justice. Its principles energize students by having them actively engage in their learning process and question norms and structures. It liberates minds by having students practice prioritization of historically marginalized perspectives and drives social justice efforts involving collaboration with communities to transform educational systems. Emancipatory education goes beyond traditional teaching methods. It encourages students to critically examine their experiences, societal structures, and power dynamics. By fostering awareness, it emboldens them to challenge injustice. Emancipatory education aims for liberation—both personal and collective. It seeks to transform oppressive systems and create a more just society. Teaching methods that emancipatory education supports include dialogic teaching, problem-posing, and participatory action research. These approaches prioritize dialogue, collaboration, and student voice.

The Patient Protection and Affordable Care Act (ACA) required all state Medicaid programs to pay for both curative and hospice services for children and adolescents. The purpose of this Special Article report is to quantify and describe the use of concurrent care for children, including a depiction of the barriers and benefits according to community-based hospice organizations in the United States. A total of 295 hospice organizations from 50 states and Washington, DC responded to the National Alliance for Care at Home call for engagement. Almost three-quarters of responding organizations admit children under concurrent care. An average of 38% (median 10%) of admitted pediatric patients are cared for under concurrent care. There was a notable lack of uptake of diverse reimbursement models relevant to concurrent care. Definitions of concurrent care focused on location of care and access to ongoing treatments without defining services. Responses tended toward an emphasis on regulatory/compliance language rather than goals of care or partnership focus. Challenges and barriers to concurrent care were quantitatively and qualitatively described as confusion, complexities, lack of consistency, cumbersomeness, and poor cross-partner communication. Policy and reimbursement model clarification is warranted to improve the potential benefits of this coverage for children and their families. As the ACA is currently at risk of discontinuation and Medicaid is at risk of decreased funding, the pediatric community should leverage advocacy for improved concurrent care coverage approaches that are clear, consistent, and compassionately attuned to the needs of children and their families.

Different brain rhythms are often signatures of different behavioral and perceptual states of the brain. As resonance at neurons has a close connection with brain rhythms, characterizing and analyzing the neuronal resonance promote the understanding of brain rhythms and dynamical organization of the brain. In this paper, we study the resonant behaviors of both the four-dimensional (4D) Hodgkin-Huxley model and a reduced-order (2D) model at the subthreshold level. We analyze the frequency responses of a neuron and characterize resonance through investigating the neuron's transfer functions, frequency response functions, and root locus plots. The 2D model, especially, allows us to visualize the state space, perform phase plane analysis, and derive a closed-form formula for the resonant frequency. These analyses will be generalized to study resonance at the spiking regime and network level in future work.