Reviewing the Variability-Overuse Injury Hypothesis: Does Movement Variability Relate to Landing Injuries?     

Andrew D. Nordin  Janet S. Dufek 《Research quarterly for exercise and sport》2019,90(2):190-205

Purpose: Overuse injuries are common in sport, but complete understanding of injury risk factors remains incomplete. Although biomechanical studies frequently examine musculoskeletal injury mechanisms, human movement variability studies aim to better understand neuromotor functioning, with proposed connections between overuse injury mechanisms and changes in motor variability. Method: In a narrative review, we discuss the variability-overuse injury hypothesis, which suggests repeated load application leads to mechanical tissue breakdown and subsequent injury when exceeding the rate of physiological adaptation. Due to the multidisciplinary nature of this hypothesis, we incorporate concepts from motor control, neurophysiology, biomechanics, as well as research design and data analysis. We therefore summarize multiple perspectives while proposing theoretical relationships between movement variability and lower extremity overuse injuries. Results: Experimental data are presented and summarized from published experiments examining interactions between experimental task demands and movement variability in the context of drop landing movements, along with comparisons to previous movement variability studies. Conclusion: We provide a conceptual framework for sports medicine researchers interested in predicting and preventing sports injuries. Under performance conditions with greater task demands, we predict reduced trial-to-trial movement variability that could increase the likelihood of overuse injuries.  相似文献   

论体育参与对高职学生就业能力的促进作用     

沈竹雅 《体育科技文献通报》2020,(2):33-33,47

在对高职学生就业能力的内涵进行简要阐述的基础上,重点论述体育参与对高职学生就业能力的促进作用:体育参与有利于提升高职学生的职业身体素质,有利于提升高职学生的应聘抗挫能力,有利于培养高职学生的团结协作能力。最后,就如何激发高职学生的体育参与积极性简要提出若干建议。  相似文献   

A Typology of State Financial Aid Grant Programs Using Latent Class Analysis     

Custer  Bradley D.  Akaeze  Hope O. 《Research in higher education》2021,62(2):175-205

Research in Higher Education - State financial aid grant programs are commonly categorized as either need-based, merit-based, or both, but their initial eligibility requirements include many more...  相似文献   

Validity and reliability of a linear positional transducer across commonly practised resistance training exercises     

Harry F. Dorrell  Joseph M. Moore  Mark F. Smith  Thomas I. Gee 《Journal of sports sciences》2019,37(1):67-73

This study investigated the validity and reliability of the GymAware PowerTool (GPT). Thirteen resistance trained participants completed three visits, consisting of three repetitions of free-weight back squat, bench press, deadlift (80% one repetition maximum), and countermovement jump. Bar displacement, peak and mean velocity, peak and mean force, and jump height were calculated using the GPT, a three-dimensional motion capture system (Motion Analysis Corporation; 150 Hz), and a force plate (Kistler; 1500 Hz). Least products regression were used to compare agreeability between devices. A within-trial one-way ANOVA, typical error (TE; %), and smallest worthwhile change (SWC) were used to assess reliability. Regression analysis resulted in R² values of >0.85 for all variables excluding deadlift mean velocity (R² = 0.54–0.69). Significant differences were observed between visits 3-2 for bench press bar displacement (0.395 ± 0.055 m; 0.383 ± 0.053 m), and deadlift bar displacement (0.557 ± 0.034 m; 0.568 ± 0.034 m). No other significant differences were found. Low to moderate TE (0.6–8.8%) were found for all variables, with SWC ranging 1.7–7.4%. The data provides evidence that the GPT can be used to measure kinetic and kinematic outputs, however, care should be taken when monitoring deadlift performance.  相似文献   

健美操作为课间操锻炼内容的可行性研究   总被引：1，自引：0，他引：1  

沈逸萍 《福建体育科技》2003,22(1):50-52

对 90名中学生进行为时 5个月系统的健美操作为课间操锻炼内容的实验 ,运用观察统计等方法证明健美操作为课间操的内容比广播操更有利于提高大脑皮层的兴奋性、灵活性和学习效率。为今后健美操代替广播操的进一步推广、普及提供理论依据。  相似文献   

网络型电子期刊编目原则探讨   总被引：12，自引：0，他引：12  

沈芸芸  张广钦 《大学图书馆学报》2003,21(3):79-82

网络型电子期刊的编目原则问题是进行该类型资源编目首先要解决的问题,本文针对网络型期刊的特点探讨了两种原则以及相应的著录要求,即:单记录原则(在印刷版/原始记录中给出访问路径);为网络版期刊单独建立记录的原则。笔者建议采用后者,并讨论了网络型电子期刊的著录信息源的选取。  相似文献   

Retaking departments     

James D. Preston  Graves E. Enck 《Academic Questions》1992,5(1):70-74

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A New Approach to Quality Assurance for Higher Education     

James D. T. Tannock 《Higher Education Quarterly》1992,46(1):108-123

This article describes the Engineering Professors' Conference (EPC) approach to quality assurance for Higher Education Institutions, which is currently the only formalized alternative to British Standard 5750 'Quality Systems'. The EPC approach is based on principles of quality assurance and Total Quality Management which have been developed in industry. These ideas are briefly outlined, and an opinion expressed on the interpretation and application of BSS7S0 for HE. The EPC model is explained, illustrated with example elements taken from the EPC Specification and Guidelines for Quality Assurance in Higher Education. A top-down approach to the development of an institutional quality system is described, based on a quality policy statement. Areas of activity which have an important impact on the quality of education are identified, emphasising the quality assurance requirements of academic departments. Supporting and administrative quality system requirements are also described, as these also play an important role in the quality of education. Formal quality procedures and documentation in key areas are proposed.  相似文献   

Mary Elizabeth (Betty) Feeney, 1918–2000     

T. Mark Hodges 《Journal of the Medical Library Association》2001,89(3):329

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Special issue on Peer Review of Teaching     

Ronald D. Simpson 《Innovative Higher Education》1996,20(4):219-220

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