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Occupational health and safety (H&S) is important to the design, construction, maintenance, refurbishment and demolition of buildings and facilities in all branches of industry, business and commerce. H&S issues have been a major consideration in construction. Far too many people get hurt, injured or die even though the situation has improved over recent years. Accident and fatality rates continue to be significantly higher than other industry sectors. Although all parties involved in the construction industry may address their respective responsibilities, the lack of integration between each organization often results in communication problems which jeopardize H&S. Of particular note is the communication during the design phase. All information pertaining to the project must be readily accessible for all parties, to ensure smooth and hitch-free project execution. This research reviews the challenges in the communication of health and safety information in the design phase of construction projects. It characterizes the various aspects of collaborative communications at this stage and highlights the problem area. The research was conducted in the UK based on a combination of qualitative research methods including literature review, interviews and analysis of focus group interviews data. Observations on documentation and interviews are used to investigate the current industry practice. The literature reviews revealed that communication industry is facing challenges with its communication system due to the nature of industry itself. The construction industry is a fragmented and complex industry with too many parties involved in a project. These parties come from various backgrounds and involved in the project in a temporary duration. The parties who become team members must be able to establish a relationship in such a short period of time and create a communication system that enables all of the parties to collaborate and interact with each other.

High-risk organizations are continuously striving to minimize risks and establish a safe working environment. While technology and high standards are crucial, a core aspect of an effective safety management system lies in safe human behaviour and this constitutes the main theme for this thesis. In order to assess the state of safety of an organization from a behavioural perspective, safety compliance (SC) and safety citizenship behaviour (SCB) were measured through interviews and quantitative studies with an emphasis on understanding the key aspects of leadership style and associated mediating factors that influence employees' safety compliance and safety citizenship behaviour.

The circadian cycle, although seasonally adjusted, consists of two phases: a nocturnal period of darkness and a diurnal period of light. Many parameters of human physiology display either a nocturnal or diurnal peak as seen in athletic performance, immune, endocrine, physiology and cognitive function, respectively. The studies included in this thesis focused on the diurnal (morning or AM versus evening or PM) effect of high-intensity self-paced exercise on physiological and immunological measures and the influence of individual preference for activity or chronotype on these responses. Self-paced time-trials were completed in an environmental chamber (6°C) in the AM and PM and displayed a similar effect on physiological and biological parameters. Performance times were non-statistically quicker (P > 0.05) at PM. Physiological parameters heart rate, rate of perceived exertion, lung function and self-paced treadmill speed were not found to be statistically different at AM or PM trial (p > 0.05). Core body temperature (CBT), was significantly higher (p0.05). CD8+ T-lymphocyte cell-surface markers for naïve/senescence and differentiation (CD27CD45RA and CD27CD28) reported no diurnal difference between AM and PM exercise in experienced and experienced/recreational distance runners respectively (P > 0.05). However, a higher percentage of highly differentiated phenotypes were found in the recreationally active population. Neutrophils displayed a pronounced elevation in response to PM exercise with the mechanism driving this response unclear at this time. Cortisol concentration displayed less inflammatory responses in the morning compared to the evening with higher values pre, post and one-hour post AM trials. Chronotype showed no effect on physiology or biology at rest or in response to exercise. Chapter 4 presents data from a study that investigated diurnal physiology and immune response to high-intensity exercise in highly-trained men. Recreational and experienced endurance male runners at differing diurnal time-points were investigated in Chapter 5, while individual chronotype differences and circadian phase responses were explored in Chapter 6.In summary, it is concluded from this work that there was a lack of evidence showing a diurnal effect on running performance and subsequent immune response. Elevated circulating immune counts prior to exercise, irrespective of diurnal phase, appear to govern exercise-induced responses. The effect of high intensity exercise is subject to three distinct variables: the fitness status and experience of the individual completing the exercise, the time of day at which the exercise is undertaken, and the phase response of exercise at that point of the circadian cycle. No diurnal phase mediated a divergent effect on variables examined was observed at 09.00hrs and 17.00hrs. These time-points should be considered not sufficiently dissimilar to elucidate diurnal variation in trained and healthy males.

Researchers have linked physical activity (PA) with positive health outcomes. Unfortunately, PA in young people continues to be reported as a concern with many not achieving the recommended guidelines. Further, participation in childhood and adolescence is positively associated with PA into adulthood, highlighting the importance of PA habits in young people for lifelong participation. Gender, socio- economic status (SES), and motivation have all been shown to be important factors that influence participation, and as such are a focus of this thesis. Mixed methods research was adopted to ‘investigate the nature of PA in young people within a Scottish context' including quantitative (study one) and qualitative (studies two and three) methodologies. The initial motivation for study one emerged through my personal interest in understanding the nature of young people's participation in structured club activities and the role SES, gender and motivation play in a Scottish context. Sport is often used as a proxy for PA and as such, young people's participation is frequently reported on sports club based activities. On reflection, this focus on ‘weekly club activity sessions,' rather than a more broad, valid, and reliable measure of PA, limited the application of the findings. Nevertheless, the findings and reflection on the methods used in study one informed the direction of the thesis moving forward. More specifically, SES was found to be the strongest predictor of club activity participation, with those from higher SES taking part in more club activity sessions than those from lower SES. No significant gender differences in participation were found. While SES was the sole predictor of school club activities, perceived competence and intrinsic motivation were also important predictors of participation in out-of-school club activities. The regression models predicted between 5% and 27% of the variance in club participation, highlighting the multi-factorial nature of the influencers of participation. In order to understand the nature of PA more broadly in young people from lower SES within a Scottish context and to investigate the complexity of participation influencers, a qualitative methodology was used. Study two investigated low SES Scottish youths' PA experiences across key development stages (i.e., childhood, adolescence and newly identified early adulthood, study two). Results suggested that young people from low SES participate in a high variety of unstructured PA throughout their lives, which is under reported in the literature. Participation in structured sport based activities in childhood, particularly those in which a young person forms a sport ‘identity,' influences future adherence, but also engagement and enjoyment of school physical education (PE). For many young people, particularly those from less affluent backgrounds, school PE may be the only opportunity for them to participate in structured PA. While some young people embraced school PE, others perceived PE a threatening, so leading them to avoid or drop out altogether. Findings showed that in addition to previous experience, the nature of the PE climate also influenced participation as young people entered early adulthood. As well as shedding light on the broad nature of young people's PA from low SES backgrounds, the findings from study two highlighted the role that schools (e.g., through PE) have in influencing young people's PA and associated attitudes. Study three aimed to investigate young people's PA, motivational influences, and the role of schools from the perspective of qualified Scottish PE teachers, knowledgeable on policy issues and active in the development of future teachers. The main findings from study three showed that family influences (mostly parents) and SES were key towards the formation of young people's attitudes and behaviours towards PA, particularly in sports. Those young people with parents not showing any interest in PA were more likely to be inactive compared to those youngsters with active parents. Young people from lower SES backgrounds were less likely to participate in sports activities, thus preventing them from gaining the necessary experiences (and competencies) needed to successfully take part in many school PE activities. Also, this study found that secondary school PE is perceived by many pupils as threatening which subsequently led many to avoid PE altogether. Many young people are not achieving the curriculum expected health and well-being benefits through school PE. The results also highlighted the huge challenge and role conflict that is apparent for PE teachers in schools, which is a barrier to effective promotion of PA and positive attitudes in a range of young people. This thesis supports the contention that SES is an important factor in young people's PA. While those from lower SES were shown to participate in less structured sport club activity than those from higher SES, evidence emerged suggesting that young people from lower SES participate in a variety of unstructured PA which is underreported in the literature. The complexities of PA participation were also apparent where previous experience, parents and school PE were found to have important roles, which either facilitated or debilitated motivation, and participation. This thesis also highlighted that there are serious challenges in delivering an effective PE experience to pupils with a wide range of ability and backgrounds. These challenges were exacerbated by the vagueness of policy guidance (e.g., within Scotland's curriculum for excellence), the pressures of certification, and the mostly sport dominated culture of PE. Implications for policy and practice in relation to the motivational climate of PEemerged. Recommendations for future research and practice in this area are discussed.

In recent times, the sports sector across the globe has attracted economic interests both from the public and the private sector. For example, the cost of hosting the 2014 FIFA World Cup in Brazil was estimated at over $14.5 billion, with huge investments made intorenovating old stadia and building new ones in preparation for the games. Similarly, the 2014 Commonwealth Games in Glasgow generated over 5,000 jobs and apprenticeships for the locals, £200m worth of contracts to local firms, £198m investments in sporting facilities, and £700m worth of transport-related infrastructural development. It is thus clear that sport hasassumed more relevance in society than merely serving the purpose of recreation and leisure such that stakeholders now commit resources into sport performance improvement. Consequently, countries (particularly, those in Europe, Australia and North America) consider the sports sector among the key factors of social and economic development. Given the considerably large youthful population of Nigeria, it is possible to take advantage of sports to advance social and economic wellbeing of the people. It is however regrettable that the Nigerian government does not appear to have realised the potentialopportunities a robust sports economy could provide for a nation in the quest for social, political and economic development. The opportunities provided by sports for social and economic growth will not be fully grasped unless efforts are made to create effective talent development frameworks; unfortunately, anecdotally at least, the reality on the ground suggests that the contrary is the case in Nigeria. Previous research investigating the process of talent identification and development has highlighted a number of features of effective talent development environments. Research informing these guidelines and principles comes from a variety of research activity including understanding the nature of the talent development pathway, the characteristics of successful and developing athletes, the features of effective coaching and support environments, factorsof effective talent transfer, and effective talent development policies. However, it is important to note, that the current TID literature is based predominantly on European, Australian and North American studies. This is particularly important given that there is strong evidence to suggest that TID is culturally and context specific. Certainly the specific context must be taken into consideration when transferring and/or using recommendations (either research orapplied) from one context to another. Since there has been very little work carried out within a Nigerian context, this thesis aims to take a broad examination of the nature of talent identification and development processes within a Nigerian context. This is with the aim of understanding potential barriers to TID and facilitating effective practice to aid successful talent development within Nigeria To address these objectives, three studies were carried out. First, a literature review examined the relevant TID literature in relation to the specific context of TID in Nigeria, taking into account the role(s) of important stakeholders (i.e. coach, parents, teacher, siblings,and peers). Based on the lack of evidence from the Nigerian environment and the exploratory nature of this thesis, three qualitative studies were designed and implemented to examine a broad, in-depth perspective of the nature of athlete and sports development in Nigeria. These three studies included the elite athletes' perspectives of the nature of talent identification and development, the elite coaches' perspectives and finally the community stakeholders' perspectives. A total of 21 participants (i.e. 8 elite athletes, 7 coaches and 6 community stakeholders) were purposefully sampled and interviewed to provide triangulated, and informed perspectives on the specific nature of TID in Nigeria. The data revealed a number of challenges to effective TID in Nigeria including, lack of policy implementation, corruption, poverty, and family resistance, as well as poor infrastructure for sports development. Furthermore, luck played a large role in successfuldevelopment, especially due to the ad hoc nature of access to coaching and supportive people in the community (e.g. head teachers). Interestingly, in case successful development, theextremely challenging circumstances faced by athletes attempting to develop their sporting potentials acted as a mechanism to develop their mental resilience and independence, which facilitated success. Furthermore, findings suggest that widespread cultural practice through early years (e.g. festivals, physical labour) developed a general physicality among Nigerian children, which could serve as bedrock of TID, if the other talent development environmentswere put right.

Aim: The aim of this thesis was to investigate the psychophysiological response to the dynamic working environment within a cohort of higher education employees via ambulatory assessment of psychosocial and physiological measures. Methods: Data was collected from two observational studies. Study one employed a cross-sectional design to investigate relationships between work-related psychosocial hazard, work-time heart rate variability, blood pressure, and the cortisol awakening response. Consideration was given to occupation type and acute work-related demand. Study two, a single-subject case study, employed an experience sampling methodology to peform a 24 hour assessment over 21 days. Workload, affect and demand were sampled during working hours, while heart rate variability and physical activity were continually sampled (24 hours), with salivary cortisol, being sampled at 3 time points during the awakening period. This study also investigated some of the methodological issues associated with ambulatory assessment of both heart rate variability and the cortisol awakening response. Findings: Chronic work-related demand was found to be positively associated with sympathetic dominance of the autonomic nervous system. Acute work-related demand was associated with ambulatory heart rate variability during work time and evening time whilst the rise in salivary free cortisol over the immediate post awakening period varies according to acute anticipatory demand and prior day's workload. Substantial intra--individual variation in both the cortisol awakening response and ambulatory heart variability was found to occur across work-days. Work time activity levels accounted for little of the variation in ambulatory heart rate variability and blood pressure. The cortisol awakening response was associated with both heart rate variability and nocturnal movement in the latter stage of sleep. Conclusion: Attending to the psychophysiological response to work at the individual level by means of ambulatory assessment appears to provide a useful means of assessing the balance between employee and environment. This could have significant implications for work design, employee selection and targeting of workplace interventions.

This research asks whether a focus on nature enables participants on a mindfulness programme to better assimilate mindfulness practice into their daily lives with resultant improvement in health and wellbeing, greater resilience and a more successful approach to their self-management of chronic illness. In doing so it has implications for approaches to healthcare delivery in the management of chronic conditions as well as the teaching and practice of other mindfulness approaches and similar therapeutic interventions. Improvements in participant health and wellbeing, particularly the impact on self-efficacy, the belief that the integration of mindfulness into their lives, their building of a regular practice, helps manage their health conditions and improve their sense of wellbeing, form a key element in the ‘sense of coherence’ that is the mainstay of the Salutogenic approach to health and wellbeing (Antonovsky, 1979). More than 15 million people in the UK live with chronic illness, accounting for more than 50% of all visits to general practitioners and 70% of hospital inpatient stays. This accounts for 70% of the NHS primary and acute care budget and yet it is felt that 70 - 80% of cases could be supported to manage their own conditions with mindfulness based approaches providing a low cost, long term form of such support. Although the separate fields of mindfulness, nature connection and chronic illness have each received attention in the academic literature, little academic research has examined the conjunction of these fields. This thesis builds bridges between the three areas. A research bricolage is constructed which follows participants with diverse backgrounds and chronic health conditions as they engage in a nature based mindfulness programme and subsequent follow-up over 12 months. These case studies are documented by participants using a variety of media and explored through a interpretative phenomenological lens. The study found that a nature focus did help participants incorporate mindfulness practice into their daily lives with resultant benefits in the management of their conditions and their perceived wellbeing. However it also highlighted barriers to successful integration including the impact of family support and ongoing medical interventions. In doing so it contributes to the teaching of mindfulness, providing new ways of engaging participants and a route to its improved integration in daily life. It provides insights into the difficulties faced by those learning mindfulness and leads to greater self efficacy in the management of chronic illnesses. A nature based mindfulness approach to health can improve self management while reducing health care costs in populations with diverse chronic illnesses.

abstract: Regulatory agencies, such as the Occupational Safety and Health Administration (OSHA), and the National Institute of Occupational Safety and Health (NIOSH), recognize that decisions regarding occupational health are often economically driven, with worker health only a secondary concern (Ruttenberg, 2014). To investigate the four National Occupational Research Agenda (NORA) long-standing health concerns—welding fumes, crystalline silica, noise, and musculoskeletal disorders—a mixed methods research is conducted. Fourfold structuration, a holistic communication process with roots in indigenous/ancient knowledge, is used to organize data and facilitate making tangible relationships of health to productivity and profits that are abstract and often stated by industries, such as construction, as difficult to quantify. From both construction trade worker and occupational health and safety expert interviews data/codes are developed. For the qualitative method, the codes are organized into a constructivist grounded theory depicting the construction industry with regard to its foundation – profits. A theoretical exercise translating the qualitative codes into potential productivity losses is presented as a way for quantifying the abstract relationships of health to productivity. For the quantitative study, the data/codes are used to develop a comprehensive list of practices, barriers to, and catalysts for addressing health in construction. A significant quantitative finding is that occupational health and safety (OSH) experts are not traditionally involved at the highest levels of the OSHA Hierarchy of Controls, where the greatest opportunity to prevent exposure to health hazards is possible. Organized via a holistic framework, this research emphasizes our primary responsibility to each other as highlighted in recent NIOSH worker health agendas. / Dissertation/Thesis / Doctoral Dissertation Engineering 2017

The purpose of the study was to quantify the relationship between adolescent smoking and economic dependence on the tobacco crop. A survey of 1322 students from a random sample of all secondary schools in four counties in southeastern Kentucky was performed. The survey gathered information concerning smoking behavior and social variables. Chi-square analysis was performed to assess the relationships between these variables in students from families who worked with tobacco and families who did not. Chi square analysis of female adolescent smoking behavior revealed a significant association between the instances of adolescent smoking and age, friend smoking status and sibling smoking status in both families who grew or worked with tobacco and families who did not. The only difference noted between the groups was in females from non-tobacco growing families whose smoking behavior was also significantly associated with mother smoking behavior. Assessment of males demonstrated no differences between those from tobacco growing families and those from non-tobacco families. In both groups smoking was significantly associated with age, friend smoking status and sibling smoking status.