Thesis (M.A.(Biokinetics, Sport and Leisure Sciences))--University of Pretoria, 2008. / Includes bibliographical references.

Made available in DSpace on 2014-06-11T19:35:42Z (GMT). No. of bitstreams: 0 Previous issue date: 2011-03-04Bitstream added on 2014-06-13T20:07:16Z : No. of bitstreams: 1 bolfarini_mp_dr_botib.pdf: 3665426 bytes, checksum: d28047f94fda2b45f108676ed2380657 (MD5) / Coordenação de Aperfeiçoamento de Pessoal de Nível Superior (CAPES) / Espécies de grilos que estão diretamente ligadas ao ambiente hipógeo possuem problemas especiais para conservação própria: a fragilidade intrínseca e aspectos distintos dessas comunidades, incluindo a alta taxa de endemismo, morfologia, ecologia e os diferentes comportamentos entre troglófilos. A presença de espécies novas de cavernícolas do gênero Strinatia possibilitou o estudo taxonômico e a elaboração de uma hipótese filogenética para esse grupo tão peculiar. O resultado foi a seguinte relação: ((cancelloae (gnaspini (ibitipoca (atibaiensis + valinhensis)))) (boraceana + caissara) (ribeiraopirensis) (brevipennis (ricardoi + elinae)), (apiaiensis (tamandarensis + campolargoensis)) (cerroazulensis (guapiarana (arataca (leo (adrianopolensis + atratus)))))). O presente trabalho traz a descrição de 22 espécies novas, a redescrição e transferência de Strinatia teresopolis para um gênero novo, assim como a chave de identificação / Cricket species that are directly related to the hypogean environment have their own special problems for conservation: the intrinsic fragility and distinct aspects of these communities, including the high rate of endemism, morphology, ecology and the different behaviors between troglophyles. The presence of a new cave species of the genus Strinatia allowed the taxonomic study and the elaboration of a phylogenetic hypothesis for this unique group. The result was the following relationship: ((cancelloae (gnaspini (ibitipoca (atibaiensis + valinhensis)))) (boraceana + caissara) (ribeiraopirensis) (brevipennis (ricardoi + elinae)), (apiaiensis (tamandarensis + campolargoensis)) (cerroazulensis (guapiarana (arataca (leo (adrianopolensis + atratus)))))). The study shows the description of 22 new species, redescription and change of Strinatia teresopolis for a new genus and the identification key the genus

M.A. / Sport in South Africa forms part of the fabric of our society. Unfortunately research into the psychology of sport has largely been overlooked in South Africa and where it has been applied it was based mainly on results arrived at in other countries. The development of future cricketers has enjoyed great success in both Australia and South Africa, with many current international cricketers having been through the respective Academies. The identification of future talent may be facilitated through the use of appropriate psychological interventions. The role of anxiety in sports has been much researched over the past four decades. There have been many theories advanced with regards the role that anxiety plays in effecting sporting performance. There is however a lack of research in a South African context. Foreign studies have found that anxiety (somatic) tends to follow an inverted-U and extremes of anxiety will negatively impact on performance. State anxiety has been found to enjoy an area or zone in which an atWetes performance is enhanced and outside of which performance is negatively effected. Research has found contradictory evidence as to the relationship between cognitive anxiety and performance. It is proposed that there is a negative relationship between the two. Research with regards to temperament has not been conducted in a cricketing context. The Iceberg Profile posits that there is a personality profile which identifies elite athletes. Studies have been conducted using the Minnesota Multiphasic Personality Inventory and have found that vigour, extraversion and the interest variable were significantly different between athletes and non-athletes. In order to establish whether there is a statistically significant difference in the levels of anxiety between successful and unsuccessful cricketers, three measuring instruments were used. The Revised NEG Personality Inventory, The Sport Competition Anxiety Test and the Profile of Mood States. Temperament differences were examined using the Revised NEG Personality Inventory and the Profile of Mood States. The two groups consisted of 20 male cricketers each. The successful group were all part of the 1999 Plascon Cricket Academy and the other cricketers were from non-premier league cricket sides. The study revealed that the successful group were significantly lower on the Neuroticism scale of the NEG PI-R and were less vulnerable to stress and anger than the unsuccessful group. The study also found that the successful cricketers were more extravert, had more energy, were more receptive to emotions and more sympathetic, less trusting and modest, more straightforward and had higher levels of aspiration than the unsuccessful cricketers. This supported some of the findings of the foreign studies. The Iceberg profile was not supported using the Profile of Mood States however, the fatigue sub-scale was found to be higher for the unsuccessful group. The Sport Competition Anxiety Test did not reveal significant results. A discussion of the results, limitations of the study and recommendations for future research follow this.

Magister Artium (Sport, Recreation and Exercise Science) - MA(SRES) / Over the years, cricket has progressed into a game of immense physical prowess, and evolved from a traditional and conservative game into a professional sport requiring very high levels of fitness and skill. The ability to throw a ball at high velocity and with great accuracy is critical for successful performance in many ball sports, including cricket. The aim of this study focussed on examining the relationship between isokinetic strength of the shoulder complex and throwing velocity amongst club cricketers in the age group of 18-32 years. The study used a quantitative methodology with a cross-sectional research design. A convenient sample of 40 male cricketers from the University of the Western Cape was tested. Isokinetic strength of external rotators (ER), internal rotators (IR) and ratios were measured using the Biodex Pro System 4 isokinetic dynamometer at two speeds, namely, 60º•sec-¹ and 90º•sec-¹. Throwing velocity was measured using a calibrated Cordless Speed/Radar Gun. The major findings of this study were the significant correlations between IR at 60º•sec-¹ and throwing velocity for the first team (r = 0.72; p = 0.01), second team (r = 0.67; p = 0.03), third team (r = 0.73; p = 0.01) and fourth team (r = 0.69; p = 0.02). The correlation between the strength ratio at 60º•sec-¹ and throwing velocity was significant for the first team (r = 0.76; p = 0.01), second team (r = 0.83; p = 0.002), third team (r = 0.70; p = 0.02) and fourth team (r = 0.94; p = 0.0001). In conclusion, shoulder strength plays a significant role in the throwing velocity amongst club cricketers. Specifically, the shoulder internal rotators were found to be a major influence in throwing velocity. Furthermore, the shoulder strength ratio is a strong predictor of shoulder strength performance.

No description available.

Dissertation submitted in partial compliance with the requirements for the Master's Degree in Technology: Chiropractic, Durban University of Technology, Durban, 2008. / Objectives: To compare trunk flexion and lateral flexion range of motion (ROM) pre-post intervention. To compare the bowling speed of Action Cricket fast bowlers pre-post intervention. To determine the correlation between change in bowling speed immediately post-intervention to change in trunk flexion and lateral flexion ROM immediately post-intervention. To determine the association between change in bowling speed immediately postintervention and the subjects' perception of change in bowling speed. Methods: Forty asymptomatic Action Cricket fast bowlers were divided into four groups of ten each. Group 1 received lumbar spine manipulation, Group 2 received thoracic spine manipulation, Group 3 received combined thoracic and lumbar spine manipulation and Group 4 received the sham laser intervention (placebo). Pre- and post-intervention trunk flexion and lateral flexion ROM and bowling speed were measured using a digital inclinometer and a SpeedTrac\x99 Speed Sport Radar. The subjects' perception of a change in bowling speed post-intervention was also recorded. SPSS version 15.0 was used to analyse the data. Twotailed tests were used in all cases. Results: Trunk flexion and lateral flexion increased significantly (p < 0.05) post-spinal manipulation. There was a significant increase in bowling speed post-thoracic (p = 0.042) and postcombined manipulation (p < 0.000). A significant yet weak positive correlation (p = 0.003; r = 0.451) was seen in change in bowling speed and change in thoracic flexion and lateral flexion. There was no significant difference in the percentage subjective change by intervention group (p = 0.217). Conclusions: Spinal manipulation is a valid intervention for short-term increase in bowling speed. / M

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[Truncated abstract] In cricket, the bowler propels a ball using a straight arm (permitted minimal extension) in an overhead fashion to a batsman situated approximately 20m away, who attempts to strike the ball in order to score runs for their team. Cricket bowling can be generalised by two types of bowlers; fast bowlers, who primarily use high ball speed, and spin bowlers that attempt to impart spin on the ball causing it to bounce in different directions. There has been numerous studies investigating the kinematics of fast bowling in cricket, but there is a paucity of objective literature on the spin bowling action due to the complex rotations of the upper limb necessary to develop ball velocity and rotation. One primary reason is that three dimensional (3D) analysis of upper limb movement is difficult due to the high degrees of freedom and ranges of motion of the associated joints. Furthermore, existing methods do not allow measurement of the kinematics of this highly dynamic task to be performed in an ecologically sound environment. The complexity is further compounded as the upper limb does not perform regular cyclical movements like the lower limb does with gait. Therefore, this makes it difficult to determine what

Thesis (MSpor)--University of Stellenbosch, 2007. / Bibliography. Also available via the Internet.

Thesis (MA)--University of Stellenbosch, 2005. / Bibliography. Also available via the Internet.