The detrimental nature of movement variability has recently been reconsidered with suggestions that it has a functional role to play in performance. Movements in golf can be attributed to the organismic, task and environmental constraints from which they emerge with these swing movements affecting shot outcomes. A three-dimensional analysis of address position variability revealed that higher skilled golfers present reduced alignment variability in angular relationships between the shoulders and stance compared to less skilled counterparts. Whilst there were no group differences in impact variability, both points in the swing displayed reducing variability from proximal to distal aspects of the kinetic chain. With the popularity of strength and conditioning growing within the golfing world it has become important for coaches to be able to assess golfers’ physical constraints. Two-dimensional analysis, representative of that used in coaching environments, assessed the relationship between the overhead squat and deterioration of posture in the golf swing. Results showed small but significant relationships between this test and golf swing postural kinematics. An 8-week intervention to address overhead squat physical constraints resulted in no change in 3D swing kinematics. Strength and conditioning as a stand-alone intervention provides no benefits to postural kinematics suggesting the need for coaching.

Sport coaching is a complex phenomenon in need of greater conceptual and grounded understandings. Since Heidegger’s influential text; Being and Time (1927/2005), the phenomenological question of what it means to ‘be’ has aided understanding in areas such as nursing and teaching. It is logical then, that this thesis sought to identify what it means to ‘be’ a youth performance coach. The phenomenological tenet that those best placed to elucidate a phenomenon are those that experience it, guided the thesis to explore the lived experiences of four case study coaches. Findings revealed three constituent ‘essences’ of youth performance coaching; (i) care; (ii) a commitment to educate athletes authentically for corporeal challenges to come; (iii) working with others to achieve a specialised corporeal excellence. These findings redirect coaches, researchers and educators ‘back to the thing itself’. The thesis also includes further novel contributions: 1) Phenomenological philosophy and methodology are introduced to coaching research. 2) The essential constituents of youth performance coaching are humanised by describing the incidental experiences and lifeworld of four case study coaches. 3) Fresh concepts (e.g. forms of care), sources (e.g. Sartre, 1943/1984), and areas for future research (e.g. coaching imagination) extend extant sport coaching literature.

The majority of psychological research investigating leader integrity has relied on self or other report methods as the primary means of data collection. While such an approach has advanced the literature, due to the theorised deceptive and manipulative nature of leaders lacking in integrity, prominent theorists (Barling, Christie and Turner, 2008) have called for alternative measures that are less prone to socially desirable responding. As no prior research had examined the integrity of sporting leaders, the present thesis began by examining the antecedent cognitive processes of expert football managers. Building upon this exploration, an implicit association test was developed within studies two and three. Results suggest that the instrument is capable of assessing automatic attitudes towards leader integrity, is more sensitive than existing measures, offers support for concurrent and convergent validity, demonstrates good test-retest reliability, good internal consistency, and is a predictor of player reported commitment. In sum, the present research has sought to understand the phenomena of leader integrity from the perspective of social cognition. The result of these investigations is a robust, sensitive, and complimentary measure of leader integrity, which will assist researchers to better understand the processes that underpin leader integrity.

This thesis investigated the effects of acute eccentric exercise on the immune response to vaccination in young humans. Study one investigated whether the efficacy of the eccentric exercise intervention was affected by manipulating the timings of exercise prior to influenza vaccination. Three exercise groups were vaccinated immediately, 6 hr or 48 hr after exercise and antibody responses at 28 days post-vaccination were compared to those from a resting control group. All participants exhibited robust antibody responses to the vaccine and no effect of exercise was observed; therefore, it was not possible to determine the effects of exercise timing on vaccine responses. Study two investigated whether the antibody response to influenza vaccination was influenced by the intensity of eccentric exercise. Three groups exercised at an intensity eliciting 60%, 85% or 110% of one repetition maximum, and the antibody responses at 28 days post-vaccination were compared to those from a resting control group. In the exercise groups, both men and women showed enhanced antibody responses against the B/Florida strain, and men had enhanced responses against A/Uruguay, in comparison to resting controls. In both cases, the control group exhibited poorer responses against these strains, but no effect of exercise intensity was observed. Study three investigated whether the site of vaccine administration affected the efficacy of the immune response to hepatitis B vaccination following eccentric exercise. The antibody seroconversion rate to the vaccine was low (approx. 5 %), and thus, further analysis between exercise and control participants was not feasible. In sum, supporting previous research, it appears that acute eccentric exercise can enhance the immune response to poorly immunogenic strains of influenza, but research is needed to establish if exercise can enhance other poorly immunogenic vaccines, or vaccine responses in the immuno-compromised.

Vocational dancers are anecdotally regarded as a group ‘at risk’ of compromised health. Yet little is known of the antecedents of variability in positive and negative indicators of dancers’ welfare. Grounded in the basic needs theory (Deci and Ryan, 2000), a mini-theory of the self-determination framework (Deci & Ryan, 1985, 2000) this thesis examined the social-psychological predictors of indices of well- and ill-being among vocational dancers. In study one, the inter-relationships between dancers’ perceptions of the social environment, basic psychological need satisfaction (BPNS) and reported affective states and exhaustion were explored via structural equation modeling. In study two, changes in autonomy support and BPNS were modeled as predictors of changes in dancers’ burnout during the academic year. Multilevel modeling techniques were employed to examine a) perceptions of autonomy support and BPNS as predictors of dancers’ daily affective states in learning and performance contexts (study three); and b) whether BPNS was relevant to dancers’ cognitive appraisals and hormonal and emotional responses in ‘real life’ performance settings (study four). Overall, this thesis partially supports the tenets of basic needs theory. Findings point to the importance of need supportive environments if elite performers are to experience sustained and optimal physical and psychological health.

A third of over 65s have at least one fall per year whilst a quarter of over 45s endure foot pain. Footwear is associated with both fall risk and foot pain hence its investigation is of great importance. This thesis explores the potential benefits of minimalist footwear for the older adult population. Chapter 2 ascertained the kinematic and kinetic differences between walking barefoot versus in footwear whilst highlighting the limited research on minimalist footwear, older adults and muscle activity differences. Accordingly, Chapter 3 outlined that minimalist footwear is kinematically more similar to barefoot, irrespective of age, thus offering a viable alternative. Similarly, Chapter 4 showed walking in minimalist footwear and walking unshod exhibit similar lower leg muscle activation patterns whilst differences exist to conventional footwear. Chapter 6 demonstrated how increasing intrinsic foot strength improved functional and static balance whilst Chapter 7 showed promise for minimalist footwear improving foot strength, functional balance, balance confidence as well as reducing foot and joint pain in a sample of older adults. In conclusion, this thesis highlights the need for future work to continue to investigate minimalist footwear in both older adults and other age groups for benefits to stability, foot health and joint pain.

The vestibular system provides vital information about head position and motion; which is used for the control of balance through vestibulospinal reflexes. Chapter 2 explores the process of transforming head position to body coordinates, with and without vision. The results show when vision is available, the evoked response is less precise. Chapter 3 explores the transformation process before and after 60 days of bedrest. After this period of inactivity, participants swayed more, and their EVS-evoked sway response was less precise. This decrement in precision appears to begin recovery 6 days postbedrest. Chapter 4 focuses on vestibulo-ocular reflexes rather than postural reflexes. Electrical vestibular stimulation is used to evoke measurable torsional eye-movements. The magnitude of the response is modulated by stimulus frequency. Results suggest that CNS interprets electrical vestibular stimulation as a velocity signal rather than a position or acceleration signal. This technique is an ideal measure of pure vestibular function, Chapter 5 utilised the technique in a clinical environment. Vestibular schwannoma patients, with known unilateral vestibular deficit, were tested to identify if the proposed technique can detect this deficit. Results showed that asymmetries could be detected, and, the test may be more sensitive than previously used measures of vestibular asymmetries.

My general premise is that sports and recreations are among the most revealing mirrors of many societies, offering a distinctive insight into social patterns, cultural values and even economic conditions. From this it follows that research on the USSR, using the sport-system as a case-study, may throw light on important characteristics of social processes in Soviet-type societies -- all the more so because the place of sport is evidently more central in the Soviet social system. This study attempts to show the extent to which the forms of recreation which developed in the USSR have or have not coincided with the predictions and aspirations of Marxist writers about playful activities in the society of the future. The study contains a historical account of sport in Russia and the USSR, with sections devoted to each of the main periods into which Russian and Soviet history is conventionally broken down according to the stages of its economic and political development. In addition, a special section is devoted to Soviet sport as s reflection of Soviet foreign policy. Sport is taken in the widest sense to include, too, the systems of physical education which developed in Russian and Soviet schools and colleges. The Introduction examines the various western and Soviet concepts of physical culture, sport and recreational activities.

This aim of this thesis was to critically examine the features of an elite performance centre in facilitating coaches’ professional learning experiences. In response to existing coach development literature that is negative about the formal education experiences coaches encounter, contemporary research has suggested a conceptual and practical shift towards professional learning (e.g. learning as form of social practice), which in turn has led to a greater focus on the workplace as a legitimate site for the development of professional knowledge. A focus on workplace learning requires an understanding of the social, structural, and cultural factors that facilitate or inhibit coach learning. Drawing on an ethnographic case study approach, 6 professional coaches and 3 administrative staff within an Olympic High Performance centre participated in the project over an 8 month period. Utilising a constructivist version of grounded theory, the findings build upon current understandings of coach education, suggested learning experiences are a condition of the interrelationship between negotiated personal engagement, workplace structures, and contextual mediating conditions. This relationship is captured within the model ‘Negotiated Community Transitions’, characterising coaches’ as individuals that move and participate across communities, each with its own distinct culture. As such, the coaching workplace is portrayed as a contested and fluid landscape.

This thesis presents a fully integrated and modular framework for social and emotional game companion that focuses on realistic social interaction between the player and Non-Player Characters (NPCs) in a game environment. Moreover, this thesis proposes integrated computational models for a formulation of action selection rules based on the game companion's personality, the relation between player and game companion and the perceived (non-)verbal actions to enhance the NPC's believability and the player's interaction in a game context. The rules were derived from data collections of both human-human and human-machine interactions. This thesis argues that NPC with such capability will accommodate a new experience when playing games. To illustrates the effectiveness of the proposed framework and computational models, the author implemented the framework and computational models into two game scenarios: The Smile Game where a human player who abides in the real world played with an ECA who inhabits a virtual world. The second scenario was The Skyrim Game, where an avatar represented the human player, who played with a virtual NPC in a virtual world. With a total of 117 participants in 217 interactions with the system, the results show that the players evidently perceived the NPCs' personality in accordance with the one set to them. The NPCs' ability to display emotions appropriately also provides the feeling of immersion in games to the players. Moreover, the ability to forge relationships naturally with the game companions gives the sentimental feeling towards the game companions. The main contribution of the work presented to the field of Intelligence Virtual Agents specifically in the domain of computer games, in this thesis is A fully integrated and modular framework for social-affect-aware game design complete with the computational models for social interaction with game companions. Several games have been built in several scenarios with simple social interactions between players and the game companions using the framework and computational models proposed to explore the opportunities of the framework and models. Finally, this thesis also presents some scenarios for data collections to construct interaction rules for game companions.