Benefits of achieving vigorous as well as moderate physical activity recommendations: Evidence from heart rate complexity and cardiac vagal modulation

Abstract

The aim of this study was to examine differences in traditional heart rate variability measurements and heart rate complexity (sample entropy) in young adults grouped by objectively measured achievement of either moderate or both moderate and vigorous physical activity recommendations. Of 168 young adults tested (86 females, 82 males; age 20.5 ± 1.2 years), 119 achieved only recommendations for moderate physical activity (moderate group) and 49 achieved recommendations for both moderate and vigorous physical activity (vigorous group). Analysis of covariance controlling for sex, weekly minutes of moderate physical activity, and percentage of body fat was used to assess between-group differences in heart rate variability and heart rate complexity. Logistic regression analysis was used to determine the group characteristics that best predicted high heart rate complexity and vagal indices of heart rate variability. The majority of the autonomic measures were higher (P < 0.05) in the vigorous group, and regression analysis showed that vigorous physical activity was the only multivariate predictor of higher heart rate complexity and higher heart rate variability. Young adults engaged in regular vigorous physical activity were more than twice as likely to have high heart rate complexity than those involved in predominantly moderate exercise. These findings suggest that vigorous physical activity is more closely associated with high heart rate complexity than moderate physical activity in young adults.     

Assessment for learning in Norway and Portugal: the case of primary school mathematics teaching

In this study, we aim to understand the forces driving assessment for learning (AfL) in primary school teaching. By applying a case study design, including the two cases of Norway and Portugal and using mathematics teaching as an example, available policy documents and research reports are analysed to identify the differences and similarities that might explain the assessment practices previously observed in the two countries. Many similarities are found at the school and national levels. In particular, AfL is introduced as a national policy in both countries. Still, AfL practices are not common in primary mathematics classrooms in either country, although this is true for different reasons in each country. It is suggested that the assessment culture caused by national policies, such as curriculum reforms, national professional development projects and teacher autonomy, explains the similarities in the observed outcomes.     

Variation indexes of marks due to continuous assessment. Empirical approach at university / Índices de variación de la nota debidos a la evaluación continua. Contrastación empírica en la enseñanza universitaria

The European Higher Education Area (EHEA) has required continuous assessment at university in Spain. The goal of this paper is to analyse how continuous assessment modifies the subject’s final mark, to ascertain whether it improves or lowers the final exam score and to determine whether other variables also affect this relationship. To accomplish this, we have created a database with the marks earned by students who took the final exam in the Financial Accounting class at university in the last three academic years. A variation index of the exam score was constructed as a consequence of continuous assessment, and it was analysed both quantitatively and qualitatively. The results obtained from the marks and the index were analysed using contingency tables, ANOVA, regression analyses and a contrast of differences in mean. The main conclusions allow us to state that continuous assessment has an important direct effect on the learning process as well as on the final exam score and the overall class mark, and that other variables also influence them.     

Concept of Care,Caring Expectations,and Caring Frustrations of the Elderly Suffering from Chronic Illness

While it is true that elderly concepts of care and caring expectations have been ascertained in previous literatures, little is known about how the elderly population views caring frustrations—particularly that of the Filipino elderly. This study purports to surface the lebenswelt of healthcare expectations and frustrations based on the repondents’ concept of care. A three-part instrument consisting of robotfoto, picture prompts, and unstructured interviews was used to elicit pertinent data. Through the use of dendrogram, field texts were phenomenologically reduced to emerge conceptual clusters. On the whole, this study yielded interesting conceptualizations which include the Clock of Care, the Clock of Caring Expectations and the Clock of Caring Frustrations. The emerged meanings in this study create a picture of care as a driving force in the progression of care expectations and frustrations. This eidetic background enables healthcare providers to offer care that is both timely and relevant to their client's subjective illness experience.     

Willingness toward organ and body donation among anatomy professors and students in Mexico

Most anatomists agree that cadaver dissection serves as a superior teaching tool in human anatomy education. However, attitudes toward body donation vary widely between different individuals. A questionnaire was developed to determine the attitudes toward body and organ donation among those who learn the most from cadavers: medical students, medical student teaching assistants, medical students involved in research, and anatomy professors. A cross‐sectional, prospective study was designed in which the questionnaire was distributed among first‐year human anatomy students before undertaking cadaver dissection at the beginning of the semester, and then again after a commemoration service at the end of the course. The questionnaire items included demographic data, as well as questions designed to characterize participants' attitudes regarding body/organ donation from strangers, family members, and whether participants would consider such practices with their own bodies. Out of a total of 517 students enrolled in the Human Anatomy course in the Medical School at the Universidad Autónoma de Nuevo León, Mexico during January to June 2016, 95% responded to the first (491) and second (490) surveys. Participants' opinions on their own organ donation was similar before and after exposure to cadaver dissection, with between 87% and 81% in favor of such practices, and only 3% against it, in both surveys. Participants' willingness to donate their own bodies, as well as those of family members, increased, while reluctance regarding such practices decreased by half (P < 0.0001 and P < 0.05). Professors had the highest rates of positive opinions regarding their own body donation (74.9%), with 18.8% undecided. Low opposition toward organ and body donation remains prevalent among both anatomists and physicians in training in Mexico. Anat Sci Educ 10: 589–597. © 2017 American Association of Anatomists.     

Exploring the uses of mobile phones to support informal learning

This paper explores how a group of undergraduate students in the United Arab Emirates (UAE) use their mobile phones to perform informal learning activities related to the content of their courses outside the classroom. The paper also addresses the usefulness of informal learning activities to support students’ learning. The study adopts an exploratory case study design and uses multiple methods of data collection including questionnaires, interviews and diary entries. Main findings suggest that students performed informal learning activities mostly from home, interacting mainly with classmates. It also shows that students were in control of their informal learning activities without teachers’ input. However, it was found that students used only a limited number of applications but these were considered useful to their learning. The paper contributes to a discussion of the implications of training and instructor support to help students to take more advantage of mobile phone applications to support informal learning. Recommendations for further research are discussed.     

Peer Influence on Ethnic‐Racial Identity Development: A Multi‐Site Investigation

The peer context features prominently in theory, and increasingly in empirical research, about ethnic‐racial identity (ERI) development, but no studies have assessed peer influence on ERI using methods designed to properly assess peer influence. We examined peer influence on ERI centrality, private, and public regard using longitudinal social network analysis. Data were drawn from two sites: a predominantly Latina/o Southwestern (SW) school (N = 1034; Mage = 12.10) and a diverse Midwestern (MW) school (N = 513; Mage = 11.99). Findings showed that peers influenced each other's public regard over time at both sites. However, peer influence on centrality was evident in the SW site, whereas peer influence on private regard was evident in the MW site. Importantly, peer influence was evident after controlling for selection effects. Our integration of developmental, contextual, and social network perspectives offers a fruitful approach to explicate how ERI content may shift in early adolescence as a function of peer influence.     

Benefits of achieving vigorous as well as moderate physical activity recommendations: evidence from heart rate complexity and cardiac vagal modulation

The aim of this study was to examine differences in traditional heart rate variability measurements and heart rate complexity (sample entropy) in young adults grouped by objectively measured achievement of either moderate or both moderate and vigorous physical activity recommendations. Of 168 young adults tested (86 females, 82 males; age 20.5 ± 1.2 years), 119 achieved only recommendations for moderate physical activity (moderate group) and 49 achieved recommendations for both moderate and vigorous physical activity (vigorous group). Analysis of covariance controlling for sex, weekly minutes of moderate physical activity, and percentage of body fat was used to assess between-group differences in heart rate variability and heart rate complexity. Logistic regression analysis was used to determine the group characteristics that best predicted high heart rate complexity and vagal indices of heart rate variability. The majority of the autonomic measures were higher (P < 0.05) in the vigorous group, and regression analysis showed that vigorous physical activity was the only multivariate predictor of higher heart rate complexity and higher heart rate variability. Young adults engaged in regular vigorous physical activity were more than twice as likely to have high heart rate complexity than those involved in predominantly moderate exercise. These findings suggest that vigorous physical activity is more closely associated with high heart rate complexity than moderate physical activity in young adults.