Medicine and Health Sciences Commons^™

The Development Of An Objective Multi-Dimensional Approach To Talent Identification In Junior Australian Football, Carl T C Woods

Theses: Doctorates and Masters

Talent identification (TID) is a pertinent component of the sports science discipline given the considerable influence it may have within the pursuit of excellence. Thus, research has attempted to identify the determinants of a talented performance through the use of objective testing procedures. However, many of these ‘traditional’ approaches have been operationalised by mono-dimensional objective physical performance tests that do not inherently account for the multi-dimensional requisites of game-play, particularly within a team sporting context. This is problematic when attempting to identify talent, as a successful performance in team sports is often the combination of physical, technical and tactical elements. …

Training Load Quantification In Professional Australian Basketball And The Use Of The Reactive Strength Index As A Monitoring Tool, William Markwick

Theses: Doctorates and Masters

Study 1: The intraday reliability of the reactive strength index (RSI) calculated from a drop jump in professional men’s basketball.

Purpose: To evaluate the reliability of the reactive strength index (RSI) and jump height (JH) performance from multiple drop heights with elite basketball players. Methods: Thirteen professional basketball players (mean ±SD: age 25.8 ± 3.5 y, height 1.96 ± 0.07 m, mass 94.8 ± 8.2 kg) completed 3 maximal drop jump attempts on to a jump mat at 4 randomly assigned box heights and 3 counter movement jump (CMJ) trials. Results: No statistical difference was observed between …

Analysis Of Road Sprint Cycling Performance, Paolo Menaspa

Theses: Doctorates and Masters

Sprint cycling ability is a key determinant of road cycling performance, with many races designed specifically for sprinters. The ability to excel in the final sprint is relevant for both individual riders and teams. Despite the importance of sprints within professional road cycling, the characteristics of professional road sprints and sprinters have yet to be extensively described. Thus, the overall objective of the five research studies contained within this doctoral thesis was to describe road cycling sprint performance and improve the general understanding of the physical, technical and tactical factors associated with such performances.

The first two descriptive field studies …

Landing Performance And Lower Extremity Injuries In Competitive Surfing, Lina Elizabeth Lundgren

Theses: Doctorates and Masters

Competitive surfing involves highXrisk manoeuvres that may impose injury risk, especially in the lower extremity. Although the dynamic environment of surfing is a major factor of unpredictable determinants for injury risk, there may be athlete qualities with importance for prevention. Previous studies suggest that dynamic loading and landing tasks represent major risk factors, and should therefore be included in athlete assessments and risk analysis.

The purpose of this thesis was to investigate landing tasks that may be related to surfing performance and injury risk. It involved studying manoeuvres and landing tasks to establish its relevance for surfing athletes, develop multifactorial …

Bone Strength, Load Tolerance And Injury Risk In Elite Australian Football, Nicolas H. Hart

Theses: Doctorates and Masters

A paucity of research exists to characterise and investigate lower-body musculoskeletal characteristics and morphological adaptations in elite Australian Footballers with the aim to improve screening, monitoring and load management practices. Given the high prevalence of lower-body skeletal injuries in Australian Football; and the ability to measure, modify and train muscle and bone strength and their derivatives; this project served to extend scientific understanding of musculoskeletal morphology and bone strength characteristics in elite level field-based team sport athletes through a series of research studies using Dual-energy X-ray Absorptiometry (DXA) and peripheral Quantitative Computed Tomography (pQCT). In particular, studies one and two …

The Effect Of Vertically- And Horizontally-Directed Plyometric Exercise On Sprint Running Performance, Ben Campbell Thomasian

Theses: Doctorates and Masters

The purpose of this investigation was to determine the effect of 6 weeks of vertically- and horizontally-directed lower-body plyometric exercise with vertically versus horizontally biased ground force application, on 40-m sprint running time, vertical jumping height, body composition and gastrocnemius medialis (GM) muscle architecture. Male (n = 19) and female (n = 20) recreational athletes were recruited and stratified according to 40 m sprinting ability, then randomly allocated to one of two groups: horizontally-directed plyometric training (HT) and vertically-directed plyometric training (VT).

The groups performed the experimental procedures twice each week with the same number of total ground contacts, while …

Influence Of Anthropometric And Upper Body Strength Qualities On Surfboard Paddling Kinematics, Joseph Coyne

Theses: Doctorates and Masters

Competitive surfing is an international professional water sport of which a key factor in performance appears to be surfboard paddling ability. Research on surfing performance is relatively novel and there is very limited data as to how anthropometric and upper extremity strength variables influence not just surfboard paddling but also surfing ability.

PURPOSE: The purpose of this research was threefold. The first purpose was to evaluate the reliability of Pull Up and Dip 1RM strength assessments, the ratio between the two exercises, and a surfboard endurance paddle assessment. The second purpose was to establish if there were discriminative factors between …

Evaluation And Training Of Sensorimotor Abilities In Competitive Surfers, Tai T. Tran

Theses: Doctorates and Masters

Study 1: Development of a comprehensive performance testing protocol for competitive surfers

Purpose: Appropriate and valid testing protocols for evaluating the physical performances of surfing athletes is not well refined. The purpose of this project was to develop, refine, and evaluate a testing protocol for use with elite surfers, including measures of anthropometry, strength and power, and endurance. Methods: After pilot testing and consultation with athletes, coaches and sport scientists, a specific suite of tests was developed. Forty-four competitive junior surfers (16.2±1.3 years, 166.3±7.3 cm, 57.9±8.5 kg) participated in this study involving a within-day repeated measures analysis, using an Elite …

The Regulation Of Human Iron Metabolism In Hypoxia, Andrew Govus

Theses: Doctorates and Masters

Athletes commonly use altitude exposure in an attempt to improve their aerobic performance at sea level. Altitude exposure enhances erythropoiesis and iron-dependent oxidative and glycolytic enzyme production, for this reason, athletes must maintain a healthy iron balance at altitude. A negative iron balance at altitude may limit such physiological adaptations, potentially reducing the performance benefits of altitude exposure.

This thesis examined the regulation of iron metabolism during acute (~31 min, Study One) and prolonged altitude exposure (14 days, Study Two). Finally, Study Three examined how daily oral iron supplementation influenced haemoglobin mass (Hbmass) and iron parameter responses to prolonged, moderate …