<p>Football is the most popular sport in the world, and it continues to have a progressive annual increase in the number of active players and the number of games played per season, which in turn, leads to an increase in the frequency of injuries. Football is extensively researched worldwide, however, some current studies confirm that the results on football injury factors are limited, as well as inconsistent and incomplete. The main aim of this study was to examine interrelating factors of football injuries through the various age groups at a designated football club. The study aimed to expose the injury risk factors and patterns present in the various age groups.</p>

Thesis (M.S.)--Oregon State University, 2004. / Includes bibliographical references. Also available online (PDF file) by a subscription to the set or by purchasing the individual file.

Thesis (M.S.)--Oregon State University, 2004. / Includes bibliographical references.

Background: The International Football Federation (FIFA), through their Goal project, renovated Rufaro stadium from natural turf (NT) to artificial turf (AT). This was met with mixed feelings especially with regard to injuries sustained by football players. There is no published scientific data on football injuries in Zimbabwe. Aim: To determine the frequency of injuries on AT and NT among Premier Soccer League (PSL) players in Zimbabwe. Objectives: To determine the attitudes of players regarding the different football playing surfaces, and the incidence, severity and injury types on AT and NT. Methods: The 2013 season's16 PSL teams were selected to complete questionnaires and injury report forms. Injuries recorded during matches on AT and NT were analyzed. Outcome measures were injury incidence (injuries/1000 player hours (Phrs) of exposure)compared for AT and NT using rate ratios (95% confidence intervals). All statistical significance were set at p<0.05. Results: A total of 325 players responded and 295(90.8%) preferred playing on NT. Of these, 250(76.9%) believed that AT was associated with more injuries. A total of 364 injuries occurred during 4455phrs of exposure giving an injury incidence of 81.7 injuries/1000phrs.A total of 69 games (1138.5phrs) on AT revealed an injury incidence of 85.2 injuries/1000phrs while 201 games (3316.5 phrs) on NT revealed an overall incidence of 80.51 injuries/1000-hrs.This analysis showed no statistically significant difference in the incidence of injury between AT and NT surfaces during matches played, [RR= 1.06; 95% CI: 0.84 – 1.34]. With regard to injury severity, the highest incidence occurred on the AT (31.62/1000phrs in the mild category) and the lowest incidence was on the NT (1.81/1000 phrs in the severe category) .The rate ratios for the severity were however not statistically significant. Comparison of the injuries according to body part injured largely revealed insignificant rate ratios. Conclusion: Football players believe that the AT is associated with increased risk of injury. There was no significant difference in injury incidence rates and severity between the AT and NT during the 2013 PSL season in Zimbabwe. The incidence of injury in this study was much higher than comparable European studies and is a need for further studies to explore the underlying reasons for this.

The aim of this study was to describe and compare the gaze behaviour patterns of expert and near expert under 19 level rugby union players during one-on-one defensive play. Gaze characteristics such as the areas of interest visited, the number of fixations, the duration of each fixation, the starting and last fixations; and the order of fixations adopted were used to achieve the aim of the study. In addition, biographical data, including sporting and vision history, were collected. Data of the two groups were described and compared with statistically and practically significant differences been highlighted. Inferential statistics were used and the following significant levels set: p<.05 for t-tests and Chi-sq'ared - tests while Cohen's d (absolute value) ≥0.20 and Cramér‟s V ≥0.10 were used to determine the practical significance for statistically significant results, respectively. An exploratory and quasi-experimental design was used, in which 81 participants (16 – 19 years of age) were sampled for differences between experts' and near experts' visual-search strategies and gaze behaviour patterns when anticipating the direction of deceptive running skills in rugby union, however, only 68 participants had eye tracker data analyzed due to the strict calibration criteria. The expert players correctly anticipated significantly (t-stat = -3.16, p = .002, d = 0.71) more than the near expert players on average (75.76% compared to 66.46%), and therefore, were less susceptible to deceptive running skills. The near expert players were, however, more aware of their fixation location than expert players. Both expert and near expert players fixated considerably more on the knees and hips than any other area of interest, however expert players had fewer, but longer fixations than near expert players per run with 4.29 ± 1.89 fixations (χ2 = 3.90, p = .048, V = 0.24) of 0.420 ± 0.140 seconds (χ2 = 3.97, p = .046, V = 0.24) compared to 5.34 ± 2.39 fixations of 0.350 ± 0.150 seconds. Both the expert and near expert groups fixated more on the lower body than the upper body on average, however, the near expert players fixated significantly more off the body for all correct runs than the expert players (t-stat = 2.17, p = .034, d = 0.53). The expert players start fixating more on the knees at the start of each trial, whereas the near expert players start fixating more on the knees and hips, and considerably off-target. The expert players fixate significantly more on the knees (t-stat = -2.56, p = .013, d = 0.63) at the end of each trial than the near expert players on average, whereas the near expert players fixate more on the hips. The orders of fixation did not yield any discernable patterns between expert and near expert players for correctly anticipated runs. Experts exhibit superior visual-search strategies and gaze behaviour control, presumably using the top-down approach, to successfully anticipate an opponent's intended direction. This information could help coaches teach perceptual tackling skills to enhance motor learning and performance.

Magister Sport, Recreation and Exercise Science - MSRES / Football is the most popular sport in the world, and it continues to have a progressive annual increase in the number of active players and the number of games played per season, which in turn, leads to an increase in the frequency of injuries. Football is extensively researched worldwide, however, some current studies confirm that the results on football injury factors are limited, as well as inconsistent and incomplete. The main aim of this study was to examine interrelating factors of football injuries through the various age groups at a designated football club. The study aimed to expose the injury risk factors and patterns present in the various age groups. / South Africa

Thesis (M.S)--Texas State University, San Marcos, 2005. / Includes bibliographical references (leaves 158-166). Also available online (PDF file) by a subscription to the set or by purchasing the individual file.

Thesis (M.S)--Texas State University, San Marcos, 2005. / Includes bibliographical references (leaves 158-166).

Thesis (Ph. D.)--University of California, San Diego and San Diego State University, 2002. / Vita. Includes bibliographical references (leaves 266-274).

Thesis (MAppSc in Physiotherapy)--University of South Australia, 1996