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Perception and knowledge of black Africans on physical activity and non-communicable diseases / Sweetness Jabulile MakamuMakamu, Sweetness Jabulile January 2014 (has links)
The burden of non-communicable diseases (NCDs) is high in South Africa. Behavioural conducts and lifestyle factors, unhealthy diets and physical inactivity are the major contributors to the development of NCDs among South Africans. Physical activity (PA) is a modifiable risk factor that is also low in cost for preventing and managing NCDs. PA for health outcomes remains low among black South Africans. Regular engagement in PA is influenced by the knowledge and perception that a person has about the influence of PA as a healthy lifestyle. No studies that investigate perceptions and knowledge of NCDs and PA among black South Africans could be found in literature. The main purpose of this study was to explore and determine the knowledge and perceptions of NCDs and PA among black South Africans.
A total of 93 black South Africans from the Northern Cape and North West provinces voluntarily participated in the study. The participants consisted of groups of employed and unemployed men and women residing in an urban community, men working in unskilled labour conditions residing in rural areas and unemployed women residing in a deep rural area. The recruitment procedures included flyers, local radio announcements, participants recruited from previous researchers, mass communication, and word of mouth. A mixed method approach was performed that consisted of quantitative and qualitative methods. Quantitative methods were employed to determine the point prevalence of NCD risk factors among 93 participants. Of these participants, 54 participated in a survey to determine knowledge of NCDs and PA. Participants from deep rural areas were excluded from the survey owing to a high incidence of illiteracy. A qualitative exploration of perceptions of NCDs and PA was performed.
The quantitative procedures included a survey for heart disease knowledge and PA knowledge questionnaires. This was followed by NCD risk factor profile measurements; weight, height, waist and hip circumference, resting blood pressure, peripheral blood measurements for glucose and total cholesterol and objective PA measurements using combined accelerometry and heart rate (Actiheart®) for seven consecutive days. Qualitatively, focus group discussions (FGDs) were conducted to explore perceptions of
the PA and NCDs using an open-ended semi-structured questionnaire. SPSS version 22 was used in all quantitative statistical analyses. Descriptive statistics reporting means and standard deviations and frequencies were performed to determine knowledge of NCD risk factors and PA, and to determine the point prevalence of NCD risk factors. Partial correlation analyses were performed to determine the relationship between knowledge of heart disease, knowledge of PA and current PA and risk factors of heart disease. Statistical significance was set at p <0.05. Qualitative data was analysed. FGDs were audio recorded and transcribed for analysis. The Noticing, Thinking and Coding approach was used to analyse data using Atlas. ti7.
Black South Africans have high risk profiles for NCDs. The highest prevalence was for systolic blood pressure (71%), physical inactivity (68%) and markers of overweight and obesity with 67%. NCD knowledge was 59 ± 8 % and the total sample mean for PA was 84 ± 16%. The results of this study found a significant relationship between NCD knowledge and activity levels among males (r = 0.38; p =0.03). Among women PA knowledge positively associated with PA, though not statistically significant (r = 0.29; p = 0.42). The knowledge of NCDs and NCD risk factors results from the qualitative exploration of this study showed that black South Africans have limited knowledge about NCDs and negative perceptions about NCDs. They have an undistinguished knowledge of PA and are unable to apply the PA knowledge for disease prevention or management. It is therefore concluded that among black South Africans there is limited knowledge and misconception about PA. Black South Africans also lack knowledge on NCDs and have negative perceptions about NCD. An improved understanding of the perceptions of the population about physical activity and disease outcomes should be assessed in future studies in order to ensure the adoption of physical activity for the management of risk factors for NCDs. / MSc (Biokinetics), North-West University, Potchefstroom Campus, 2015
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Leptin : a bi-ethnic approach to unravel its role in cardiovascular disease, the SABPA study / Chiné PietersePieterse, Chiné January 2015 (has links)
Motivation
The prevalence of cardiovascular disease is on the increase in sub-Saharan Africa largely owing to lifestyle changes associated with urbanisation. Traditional diets are being replaced with diets high in saturated fat and sugar. In addition to the nutritional transition, urbanisation in developing African countries also contributes to a more sedentary lifestyle. Together these trends contribute to a higher prevalence of obesity and hypertension that are major risk factors for the development of cardiovascular disease. Adipose tissue is now widely recognised as an endocrine organ that secretes numerous inflammatory mediators as well as adipocytokines such as leptin. The primary role of leptin is to induce satiety after a meal and to suppress appetite. However, in recent years the role of leptin in the development of obesity-related cardiovascular disease has gained increasing attention and interest. Furthermore, leptin levels not only differ with regard to gender but also ethnicity. Africans have higher leptin levels than Caucasians due to higher subcutaneous fat in Africans. Furthermore, the prevalence of hypertension and stroke are also greater in the African population. Taken together, it is important to investigate mechanisms by which elevated leptin may contribute to the development of cardiovascular disease, especially in cardiovascular disease-prone Africans.
Aim
The general aim of this study is to increase our understanding of the role of leptin in cardiovascular disease development by investigating associations of leptin with markers of sympathetic activity, endothelial dysfunction, and cardiovascular reactivity and recovery in Africans and Caucasians.
Methodology
Data from the SABPA (Sympathetic activity and Ambulatory Blood Pressure in Africans) study was used and presented in the original research articles described in Chapter 2, 3 and 4. This study included 409 African and Caucasian schoolteachers working in the Potchefstroom district in the North West Province of South Africa. Groups were stratified by ethnicity, gender and ethnicity or obesity in order to demonstrate potential differences. We performed cardiovascular measurements and determined levels of leptin, renin, cortisol, plasminogen activator inhibitor-1 (PAI-1), von Willebrand factor (vWF) and urinary albumin-to-creatinine ratio (ACR). Independent t-tests were done to compare means between groups and Chi-square tests to compare proportions. Pearson’s correlations were determined to investigate associations as well as partial correlations after minimal adjustment for potential confounders. Multiple regression analyses were performed to investigate independent associations of leptin with cardiovascular and biochemical markers according to the specific focus of each research manuscript.
Results and conclusions of the individual manuscripts
Leptin may contribute to obesity-related hypertension through its sympatho-activating effects. In the first research article (Chapter 2), we compared mean leptin levels and markers of autonomic activity between Africans and Caucasians. We also investigated associations between markers of autonomic activity and leptin. Africans had higher leptin, body mass index, blood pressure and heart rate compared to Caucasians. Furthermore, Africans also demonstrated reduced heart rate variability that is indicative of autonomic imbalance. Markers of autonomic activity that collectively reflected sympathetic overactivity associated with leptin in both Africans and Caucasians, independent of significant covariates and confounders including body mass index. These findings suggest that leptin may contribute to the development of hypertension by inducing autonomic dysfunction.
Leptin exerts direct vascular effects and may thereby contribute to increased cardiovascular disease risk in the obese. We therefore investigated associations between circulating markers of endothelial dysfunction (PAI-1, vWF and ACR) and leptin in lean and obese groups, irrespective of ethnicity (Chapter 3). As expected, leptin and plasminogen activator inhibitor-1 antigen levels were higher in the obese group. We found no differences for von Willebrand factor antigen and urinary albumin-to-creatinine ratio. In the obese group, all markers of endothelial dysfunction were positively associated with leptin in univariate analysis. However, after full adjustment in multiple regression analyses, only the association with plasminogen activator inhibitor-1 remained significant. Higher leptin levels in the obese may possibly induce endothelial dysfunction through mechanisms related to thrombotic vascular disease.
Greater cardiovascular reactivity to stress and prolonged recovery thereafter associates with increased cardiovascular disease risk. In the final research article (Chapter 4), we therefore investigated the relationship between cardiovascular reactivity and recovery to acute stress, induced by the cold pressor test, and leptin in Africans and Caucasians. Africans demonstrated greater cardiovascular reactivity compared to Caucasians. Associations of blood pressure, stroke volume, cardiac output, total peripheral resistance and arterial compliance reactivity with leptin were investigated during the stressor application and 1, 3 and 5 minutes post-stressor. There were no independent associations between cardiovascular reactivity and leptin during the stressor, and a few correlations at 1 and 3 minutes post-stressor. Associations were mostly evident at 5 minutes post-stressor and in Africans. We argue that higher leptin levels relate to impaired post-stress recovery and thereby could contribute to hypertension development in Africans.
General conclusion
Elevated leptin relates to sympathetic overactivity, vascular damage and delayed post-stress recovery, and thereby could contribute to increased cardiovascular disease risk. / PhD (Physiology), North-West University, Potchefstroom Campus, 2015
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Injuries, rewards and promises of educational mobility from a minority perspective : school success narratives of descendants of North African immigrants in FranceShah Rokni, Shirin January 2014 (has links)
No description available.
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Psychological well-being and cardiovascular function in obese African women : the POWIRS study / Henk MalanMalan, Henk January 2006 (has links)
Motivation: Abdominal obesity (hereafter referred to as "obesity") is
becoming the biggest "global epidemic" of our modern times. It is associated
with a range of diseases, including cardiovascular diseases and hypertension.
Recent research showed that an increase in sympathetic activity is of central
importance in the pathogenesis of obesity-related diseases. Increased leptin
levels and impaired baroreflex sensitivity have both been independently
associated with abdominal obesity and increased sympathetic activity. A
perception of poorer health may also contribute to the physiological
characteristics of obesity-related diseases. A lack of data regarding
sympathetic activity, leptin levels, baroreflex sensitivity and perception of
health in Africans, serves as a motivation for conducting this study.
Objective: To investigate the contributions of leptin levels, baroreflex
sensitivity and perception of health data to increased sympathetic activity in
lean and obese African women from South Africa.
Methodology: The manuscript presented in Chapter 2 made use of the data
obtained in the POWIRS (Profiles of Obese Women with the Insulin
Resistance Syndrome) study. A group of 102 urbanized African women, living
in the North-West Province of South Africa, was recruited according to body
mass indexes. Only 85 subjects were included for analysis due to incomplete datasets. For this study, subjects were divided into lean and obese groups
according to their waist circumferences. Anthropometric measurements were
done according to standardized methods. Resting cardiovascular
measurements were obtained from Finometer observations. Resting, fasting
levels of leptin were calculated after radioimmunoassay analyses. Subjective
perception of health was determined by means of the 28-item General Health
Questionnaire. Comparisons between the groups were done using analysis of
covariance (ANCOVA) whilst adjusting for cardiovascular risk factors (age.
smoking, alcohol consumption and physical activity). Correlation coefficients
were determined to indicate any associations between leptin, baroreflex
sensitivity and perception of health with sympathetic activity (represented by
heart rate) and other cardiovascular variables.
The study was approved by the Ethics committee of the North-West University
and all the subjects gave informed consent in writing. The reader is referred to
the Methods section in Chapter 2 for a more detailed description of the
subjects, study design and analytical procedures used in this dissertation.
Results and conclusion: Results from this study indicate that obese African
women, compared to lean African women, were older, reported higher
physical activity, and exhibited higher diastolic and mean blood pressure,
heart rate, cardiac output, arterial compliance, leptin and hypertension
prevalence rate values. In lean African women social dysfunction was
positively associated with diastolic and mean blood pressure and arterial
resistance, and negatively with arterial compliance. In obese African women baroreflex sensitivity was negatively associated with diastolic blood pressure,
which could be an indication of impaired baroreflex sensitivity. In this obese
group a perception of social dysfunction was associated with decreased heart
rate. Although leptin and heart rate were significantly higher in the obese
Africans, no significant correlations existed between these variables to reflect
leptin's enhancement of sympathetic activity. However, leptin correlated
weakly but positively with cardiac output (p = 0.054, r = 0.32). In conclusion,
baroreflex sensitivity (although similar between groups) and leptin seem to
contribute to blood pressure and thus hypertension in obese African women,
possibly through increased sympathetic activity and volume loading. A
perception of poorer health, especially a perception of social dysfunction,
could possibly contribute to this image. / Thesis (M.Sc. (Physiology))--North-West University, Potchefstroom Campus, 2007.
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Artistas do deslocamento: cinco estudos em arte contemporânea africana / Artists of displacement: five studies in contemporary African artPierote-Silva, Valdir 14 March 2019 (has links)
Esta dissertação, de caráter ensaístico e cartográfico, acompanha dimensões da arte contemporânea africana a partir de estudo de cinco criadores do continente africano participantes do Festival de Arte Contemporânea Sesc_Videobrasil, realizado na cidade de São Paulo, entre 2011 e 2018. O repertório composto evidencia desafios e possibilidades para a constituição de poéticas e sensibilidades extraocidentais, reunindo criações que expressam diversas formas de deslocamento e destacam a intensa circulação entre mundos como parte importante da assinatura africana. De modo polifônico, as produções de Dan Halter, Bouchra Khalili, Bianca Baldi, Michael MacGarry e Karo Akpokiere sublinham a complexidade dos universos estéticos de criações africanas, ao mesmo tempo que questionam prescrições sobre diferenças culturais, regimes de fronteiras e narrativas hegemônicas que impulsionam a captura das imaginações. Sinalizam um campo multifacetado, em plena ebulição e construção, que se desdobra na necessidade de pluralização de referenciais, a fim de desconstruir assimetrias de poder, gerando novas experiências políticas e estéticas. / This dissertation, of an essayistic and cartographic character, describes the characteristics of contemporary African art, based on the study of five creators from the African continent who took part in the Sesc_Videobrasil Festival of Contemporary Art, in the city of São Paulo, between 2011 and 2018. The program shows the challenges and possibilities for the formation of non-Western poetics and sensibilities, bringing together creations that express diverse forms of displacement and highlight the intense circulation among worlds as an important African characteristic. The productions of Dan Halter, Bouchra Khalili, Bianca Baldi, Michael MacGarry and Karo Akpokiere polyphonically underline the complexity of Africa\'s aesthetic universes and question prescriptions on cultural differences, boundary regimes, and hegemonic narratives that drive the capture of the imagination. They signal a multifaceted field which is in full construction and unfold in the need to change references so that the asymmetries of power can be deconstructed into new political and aesthetic experiences.
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Gender and Rituals: With Special Reference to the Social Role of Royal Mothers in the Royal Family of Eswatini (Swaziland)Dlamini, Mihlakayifani January 2019 (has links)
This dissertation examined the social role of royal mothers with an analysis of the issues of rituals and gender within the context of the eMaswati kingship. The Siswati royal rituals have attracted attention from researchers in various fields of the social sciences, focusing on the iNgwenyama (King), the hereditary head of the Emalangeni (Royal family) and ruler of the eMaswati. With the recent shift in many of these fields towards a focus on gender roles, new needs arise from an understanding of the social role of eSwatini royal mothers. Royal mothers fulfilled a role based on sacred rituals which were oriented to the construction of the sociopolitical power of the Bukhosi (Monarchy).
The iNdlovukazi (Queen Mother) and eMakhosikati (Queens) are a significant feature of the culture of the eMaswati. When the Umntfwana (Crown Prince) is ready to ascend the throne, the Nabo-Mntfwana (Mother of Crown Prince) is the first to ascend to the throne and becomes the iNdlovukazi (Queen Mother). In the same fashion, the Umntfwana (Crown Prince) at his coronation then becomes the iNgwenyama (King). Moreover, the iNdlovukazi is the biological mother of a reigning iNgwenyama; she is a social, political, and ritual authority, the mother of the Emalangeni (Royal family), and the supreme mother of the eMaswati. Finally, the iNdlovukazi and eMakhosikati are recognized as essential to the family organization, a symbol of Likhaya (motherhood). The Emalangeni (Royal family), the Dlamini clan, formed the nucleus of the eMaswati.
Under these circumstances, throughout history, royal mothers have performed and fulfilled duties that other cultures reserved for male-gendered roles. During the reign of an iNgwenyama (King), royal mothers faced severe problems, especially in ensuring continuity. Presenting a historical perspective from the standpoint of the Emalangeni illuminates how the essential sources of the royal family originated with them.
The results of the accounts also provide an analysis of who the iNdlovukazi (Queen Mother) is, how or when she becomes one, and under what circumstances. Moreover, the positions of mothers in the royal family, namely the eMakhosikati (Queens), are situated around their role to that of the iNdlovukazi.
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Local integration as a durable solution: A study of Congolese refugees in JohannesburgHlobo, Rampeoane 15 November 2006 (has links)
Student Number : 9102146D -
MA research report -
School of Graduate School -
Faculty of Humanities / This is a study of local integration of Congolese refugees from The Democratic Republic
of Congo (DRC) living in Johannesburg. The point of departure is from Jacobsen’s
assertion that refugees are de facto integrated when they are not in physical danger, are
able to sustain livelihoods through access to land or employment, and can support
themselves and their families, are socially networked into host communities so that
intermarriage is common, ceremonies like weddings and funerals are attended by
everyone and there is no distinction between refugees and local communities. The study
looks at the amount of interaction between refugees and South Africans, the dynamics
involved in social integration and the perception of integration by refugees and service
providers. Refugees and service providers in Johannesburg were interviewed and
conclusions are drawn from their responses and the literature consulted.
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Imigrantes africanos no Brasil contemporâneo: fluxos e refluxos da diásporaRodrigues, Ester Fatima Vargem 21 July 2014 (has links)
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Previous issue date: 2014-07-21 / The present work on African immigration to Brazil in contemporary presents some aspects of my involvement with insertion in this subject, and brings up the question of the various forms and strategies that some African populations are able to cross the Atlantic, reviving diasporas.
Was based on analysis of information from newspaper that made references to African immigrants , found in various forms to enter the ships anchored on the African coast, and thus achieve maximize their life chances . It also establishes dialogues with African immigrants who arrived here, in many different ways and times, with varying personal characteristics about their impressions about meanings that traverse the twenty-first century. Concludes with an overview of the political situation in Africa as well as the relationships that Brazil has established with African countries / O presente trabalho sobre a imigração africana no Brasil na contemporaneidade apresenta alguns aspectos da minha inserção no envolvimento com esta temática, e traz à tona a questão das diversas formas e estratégias que algumas populações africanas encontram para conseguir atravessar o Atlântico, revivendo diásporas.
Baseou-se em análise de informações de notícias de jornais que fizessem referencias a imigrantes africanos, nas diversas formas encontradas para adentrar os navios ancorados no litoral africano, e desta forma conseguir potencializar suas possibilidades de vida. Também estabelece diálogos com imigrantes africanos que aqui chegaram, das mais diversas formas e épocas, com características pessoais variadas sobre suas impressões a respeito de significações dessa travessia no século XXI. Finaliza com um apanhado da situação política na África, bem como das relações que o Brasil vem estabelecendo com os países africanos
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West Africans in Cape Town: Immigration and struggles over documentation, 1994-2016Ambe, Nforh Anthony January 2016 (has links)
Magister Artium - MA / International migration has been a growing phenomenon in the West African community from the late 1960s as the colonial period came to an end and most West African countries gained their independence. During this period this migration trend was essentially from West Africa to Europe facilitated by the relationship that existed between West African states and their former colonial master. In the 1990s Western countries started restricting immigration by applying stricter immigration laws. West Africans who could not make it to the West sought alternative destinations like South Africa where the apartheid regime had just come to an end and the first elected democratic government had been installed in 1994. West Africans in South Africa are mostly economic immigrants and as South Africa's immigration policies changed this group of people faced challenges to acquire the documents required to legalize their stay in the country. This study seeks to analyze why West Africans chose to immigrate to South Africa and specifically Cape Town, their struggle for documentation and the extent to which the possession or non-possession of the correct documents affected their lives in Cape Town. It drew on interviews with Nine West Africans to try and understand this.The study found out that the main reason for West African immigration to South Africa after 1994 was because of the fall of the apartheid regime and the coming to power of the ANC government which re-established diplomatic and economic relations with most West African states. Countries in the West African region were faced with crisis in the 1980s as a result of policies that were implemented in the pursuit to address the ills of colonialism. As the economies of most of these countries declined, most West Africans were faced poverty and became desperate. In their quest for a better live West Africans embarked on immigrating to more developed and affluent countries. Initially they were immigrating to the countries of their colonial masters but with time as more people were immigrating, other destinations in Europe and North America became sought after. Restrictive immigration policies in these countries forced West African to look for new destinations to go to. They found that in South Africa after 1994. Apart from the economic crisis in the West African region, poor governance, corruption, political suppression and tribalism served as push factors in contributing to the immigration of West Africans to South Africa. As pull factors, the reliance on kinship played an important part in most West Africans who immigrated to South Africa. Many of them relied on the friends and family who were resided in South Africa for information, directions and support to make the journey and eventually join them were they are based. The picture and information that the mass media projected about South Africa also had a huge impact on the perception people had about the country. These perceptions contributed to the decision of West Africans to immigrate to South Africa. This study explored the range of visas West Africans sought to enter the country. It found that the visa they chose to apply for was not necessarily the real purpose of their visit but was the most convenient. This allowed them entry into the country and once in they sought other visas and permits to legalise their stay. This study found that it was a long hard journey to convert asylum permits to refugee permits Further the struggle over documentation was mainly because of the logistical short comings of the Department of Home Affairs. This study argues that it is the Department of Home Affairs that renders many of them illegal due to delays in processing the permits. .While they waited for documents, the lives of applicants were full of insecurity and there were difficulties in making a living. The informal sector provided one avenue for some. This thesis argues that applicants were desperate for the correct documents but even though they eventually acquired them these did not necessarily open up opportunities.
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A socio-rhetorical reading of Luke 7:36-50: A contra-cultural view in a patriarchal societyCloete, Rynell Adrianno January 2017 (has links)
Magister Theologiae - MTh / A number of biblical scholars have observed that the Bible has been used by dominant groups
in certain societies to justify and condone discrimination and oppression. Slavery,
colonialism and apartheid are often cited as examples of racial oppression based on particular
understandings of the Bible. Some biblical scholars have pointed to the fact that theologians
who work in contexts of racially liberated societies, such as South Africa, are slow in
recognizing the injustices caused by gender discrimination. Instead, male privilege continues
to be upheld particularly through the Biblical justification of male headship. The popularity
of the 'Mighty Men' Conference is a case in point as it encourages men to take their
supposedly rightful, "God-given" place as prophet, priest and king in marriage and family
relationships. The emerging popularity of male-headship theology thwarts whatever gains
have been made in the areas of gender justice and equality in various spheres of society,
including the church. Headship theology often goes unquestioned because it is supported by
particular interpretation/understanding of biblical texts which are quoted out of context to
support and justify male dominance. For example, Luke 7: 36-50 is often interpreted in
showing the "sinful" woman as one who needs forgiveness.
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