A biomechanical comparison of conventional classifications of bowling action-types in junior fast bowlers

ABSTRACT

Fast bowling is categorised into four action types: side-on, front-on, semi-open and mixed; however, little biomechanical comparison exists between action types in junior fast bowlers. This study investigated whether there are significant differences between action-type mechanics in junior fast bowlers. Three-dimensional kinematic and kinetic analyses were completed on 60 junior male fast bowlers bowling a five-over spell. Mixed-design factorial analyses of variance were used to test for differences between action-type groups across the phases of the bowling action. One kinetic difference was observed between groups, with a higher vertical ground reaction force loading rate during the front-foot contact phase in mixed and front-on compared to semi-open bowlers; no other significant group differences in joint loading occurred. Significant kinematic differences were observed between the front-on, semi-open and mixed action types during the front-foot contact phase for the elbow and trunk. Significant kinematic differences were also present for the ankle, T12-L1, elbow, trunk and pelvis during the back-foot phase. Overall, most differences in action types for junior fast bowlers occurred during the back-foot contact phase, particularly trunk rotation and T12-L1 joint angles/ranges of motion, where after similar movement patterns were utilized across groups during the front-foot contact phase.     

Leveraging sponsorship: The activation ratio

The accelerated growth of sponsorship has brought increased attention and scrutiny to this relatively new area of marketing and communications strategy. In turn, researchers have focused on defining, understanding and measuring the various aspects of sponsorship. However, detailed research related to the ‘how’ of sponsorship implementation remains limited. A key aspect of implementation is known as activation, which refers to the investment by the sponsor above and beyond the fee required to acquire the official rights to that sponsorship. Activation is normally referred to as a ratio of the additional investment to the cost of the rights fees. Previous studies have offered recommended activation ratios ranging from 1:1 to as high as 8:1 in order to fully reap the rewards of sponsorship. This research seeks to enhance our understanding of sponsorship activation via an in-depth case study, a typical method for exploratory research of this nature. Specifically, we ask (i) what drives activation, (ii) what are the best methods of activation, and (iii) how much should be spent on activation? Findings suggest that management decisions regarding activation focus on the custom development of quality strategies versus increasing the activation ratio. Indeed, a formula based on a variety of factors is recommended since activation tactics and their appropriateness to a specific sponsorship are the cornerstones of sponsorship success. Overall, results present a four-step model including activation drivers, strategic considerations, activation spending, and sponsorship outcomes.     

On the development of the scientific work monitoring system at higher educational institutions

The main aspects of the creation of a monitoring system for the research activities of the members of a higher-education institution are considered. The scientific activities of the lecturers and members of Turgenev Orel State University is used as the basis. It is expected that this system will be an efficient tool for optimal managerial decisions at all levels.     

Celebrating Chinese New Year Worldwide

<正>During the Spring Festival in 2012, the Cultural Ministry of China, along with China's Ministry of Foreign Affairs, Ministry of Education, State Administration of Radio, Film and TV and the State Council Office for Overseas Chinese Affairs     

Chinese Cultural Ministry Hosts Mid-autumn Reception

正On the evening of September 21, 2012, a new moon hangs over the newly lit streetlights. The Mid-Autumn reception for the year of the Dragon was held by Chinese...