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Chanaka N. Kahathuduwa Vajira S. Weerasinghe Tharaka L. Dassanayake Rajeewa Priyadarshana Arunika L. Dissanayake Christine Perera 《Journal of sports sciences》2016,34(10):923-928
We aimed to determine the effect of task-specific kinetic finger tremor, as indexed by surface electromyography (EMG), on the accuracy of a carrom stroke. Surface EMG of extensor digitorum communis muscle of the playing arm was recorded during rest, isometric contraction and stroke execution in 17 male carrom players with clinically observed finger tremor and 18 skill- and age-matched controls. Log-transformed power spectral densities (LogPSDs) of surface EMG activity (signifying tremor severity) at a 1-s pre-execution period correlated with angular error of the stroke. LogPSDs in 4–10 Hz range were higher in players with tremor than controls during pre-execution (P < 0.001), but not during the resting state (P = 0.067). Pre-execution tremor amplitude correlated with angular deviation (r = 0.45, P = 0.007). For the first time, we document a task-specific kinetic finger tremor in carrom players. This finger tremor during the immediate pre-execution phase appears to be a significant determinant of stroke accuracy. 相似文献
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Shivanthi Weerasinghe 《International Information and Library Review》2013,45(4):319-327
Information Technology (IT) has paved the way for an information society sans frontiers to have easy access to information and communication. IT also connects the machine environment with human applications, and has emerged as a force for global connectivity.Nevertheless, there is a disparity in the spread of IT across the world between the developed and the developing nations. The paper describes the use of IT in Sri Lanka and how the nation strives to integrate the opportunities and challenges it provides. The paper provides the background of a new government concept called E-Sri Lanka, with the goal of creating a full IT environment projected to bridge the information gap within the nation. The country is making a laudable effort to create a complete IT environment, and the paper brings forth the developments made over the years in the spheres of information and Information Technology, through government decisions, IT education, applications and institutional activity. The article concludes on a note of optimism—there is interactivity between IT and workers rather than humans being replaced by machines. 相似文献
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Shivanthi Weerasinghe 《International Information and Library Review》2004,36(4):319-327
Information Technology (IT) has paved the way for an information society sans frontiers to have easy access to information and communication. IT also connects the machine environment with human applications, and has emerged as a force for global connectivity.Nevertheless, there is a disparity in the spread of IT across the world between the developed and the developing nations. The paper describes the use of IT in Sri Lanka and how the nation strives to integrate the opportunities and challenges it provides. The paper provides the background of a new government concept called E-Sri Lanka, with the goal of creating a full IT environment projected to bridge the information gap within the nation. The country is making a laudable effort to create a complete IT environment, and the paper brings forth the developments made over the years in the spheres of information and Information Technology, through government decisions, IT education, applications and institutional activity. The article concludes on a note of optimism—there is interactivity between IT and workers rather than humans being replaced by machines. 相似文献
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