Advances in the application of information technology to sport performance     

Liebermann DG  Katz L  Hughes MD  Bartlett RM  McClements J  Franks IM 《Journal of sports sciences》2002,20(10):755-769

This paper overviews the diverse information technologies that are used to provide athletes with relevant feedback. Examples taken from various sports are used to illustrate selected applications of technology-based feedback. Several feedback systems are discussed, including vision, audition and proprioception. Each technology described here is based on the assumption that feedback would eventually enhance skill acquisition and sport performance and, as such, its usefulness to athletes and coaches in training is critically evaluated.  相似文献   

Research design and statistics in biomechanics and motor control     

Mullineaux DR  Bartlett RM  Bennett S 《Journal of sports sciences》2001,19(10):739-760

Biomechanics and motor control researchers measure how the body moves and interacts with its environment. The aim of this review paper is to consider some key issues in research methods in biomechanics and motor control. The review is organized into four sections: proposing, conducting, analysing and reporting research. In the first of these, we emphasize the importance of defining a worthy research question and of planning the study before its implementation to prevent later difficulties in the analysis and interpretation of data. In the second section, we cover selection of trial sizes and suggest that using three trials or more may be beneficial to provide more 'representative' and valid data. The third section on analysis of data concentrates on effect size statistics, qualitative and numerical trend analysis and cross-correlations. As sample sizes are often small, the use of effect size is recommended to support the results of statistical significance testing. In using cross-correlations, we recommend that scatterplots of one variable against the other, with the identified time lag included, be inspected to confirm that the linear relationship assumption underpinning this statistic is met and, if appropriate, that a linearity transformation be applied. Finally, we consider important information related to the issues above that should be included when reporting research. We recommend reporting checks or corrections for violations of underpinning assumptions, and the effect of these checks or corrections, to assist in advancing knowledge in biomechanics and motor control.  相似文献   

Carbohydrate availability and exercise training adaptation: Too much of a good thing?     

Jonathan D. Bartlett  John A. Hawley 《European Journal of Sport Science》2015,15(1):3-12

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Acute simulated soccer-specific training increases PGC-1α mRNA expression in human skeletal muscle     

Tae-Seok Jeong  Jonathan D. Bartlett  Chang-Hwa Joo  Jari Louhelainen  Graeme L. Close  James P. Morton 《Journal of sports sciences》2015,33(14):1493-1503

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High-intensity interval running is perceived to be more enjoyable than moderate-intensity continuous exercise: implications for exercise adherence   总被引：1，自引：1，他引：0  

Bartlett JD  Close GL  MacLaren DP  Gregson W  Drust B  Morton JP 《Journal of sports sciences》2011,29(6):547-553

The aim of this study was to objectively quantify ratings of perceived enjoyment using the Physical Activity Enjoyment Scale following high-intensity interval running versus moderate-intensity continuous running. Eight recreationally active men performed two running protocols consisting of high-intensity interval running (6 × 3 min at 90% VO(2max) interspersed with 6 × 3 min active recovery at 50% VO(2max) with a 7-min warm-up and cool down at 70% VO(2max)) or 50 min moderate-intensity continuous running at 70% VO(2max). Ratings of perceived enjoyment after exercise were higher (P < 0.05) following interval running compared with continuous running (88 ± 6 vs. 61 ± 12) despite higher (P < 0.05) ratings of perceived exertion (14 ± 1 vs. 13 ± 1). There was no difference (P < 0.05) in average heart rate (88 ± 3 vs. 87 ± 3% maximum heart rate), average VO(2) (71 ± 6 vs. 73 ± 4%VO(2max)), total VO(2) (162 ± 16 vs. 166 ± 27 L) or energy expenditure (811 ± 83 vs. 832 ± 136 kcal) between protocols. The greater enjoyment associated with high-intensity interval running may be relevant for improving exercise adherence, since running is a low-cost exercise intervention requiring no exercise equipment and similar relative exercise intensities have previously induced health benefits in patient populations.  相似文献   

The biomechanics of javelin throwing: a review     

R M Bartlett  R J Best 《Journal of sports sciences》1988,6(1):1-38

In this paper, the scientific literature and that on the sports sciences relevant to javelin throwing is critically reviewed. This is particularly timely because of the change in the specification of the javelin for the men's event, which was introduced by the IAAF in 1986. A full discussion of the aerodynamics of the javelin is presented with due consideration of the change in pitching moment characteristics that the rules change had brought about. The uses and limitations of current computer programs for simulating javelin flight, in order to estimate optimal release parameters, are profiled. Consideration is also given to the effects of wind velocity, air density, javelin weight and the flutter and spin of the javelin on its flight. The review further considers the optimization of release parameters, drawing upon computer simulations and field-based data. The effects of release speed, release height, release angle, release angle of attack and release pitch rate are assessed. The javelin throwing technique is discussed in relation to cinematographically derived data, including an evaluation of experimental procedures. The importance to successful performance of the grip, the run-up and transition phases, the cross over and delivery strides are each reviewed. Finally, some prognoses as to the direction of future research into this complex throwing skill are offered.  相似文献   

Collaboration Between Two Universities In Course Development     

G. Gillard  S. Kemmis  L. Bartlett 《高等教育研究与发展》1984,3(1):71-79

In 1981 it looked as though there could be collaboration between Deakin University and the University of Queensland in the co‐development of courses leading to a Master of Education degree to be offered externally and by course work. It was hoped that there would be joint development of three courses—about half of the minimal degree program. In the event, only one of the three courses was produced by intensive co‐development. The present study is an investigation of factors involved in the collaboration, and consequently of issues involved in any such enterprise. It is concluded that a collaborative venture is likely to succeed if it is based on a collegiate network, or on a good working relationship between academics who share research and teaching interests. It is also suggested that such collaboration can best be fostered by establishing a climate within and between institutions in which particular collaborative initiatives can be initiated and sustained. Finally, it is suggested that collaborative co‐development and co‐production and parallel provision of courses may offer a way out of the dilemma of collaboration for excellence in teaching versus institutional self‐interest.  相似文献   

Operant response topographies of rats receiving food or water reinforcers on FR or FI reinforcement schedules     

John H. Hull  Timothy J. Bartlett  Robert C. Hill 《Learning & behavior》1981,9(3):406-410

Separate groups of food- and water-deprived rats pressed a lever for food or water, respectively, on continuous reinforcement and various fixed-ratio and fixed-interval reinforcement schedules. Food-reinforced rats on continuous, FR 2-, or FI 10-sec schedules showed consistently longer mean lever contact durations per leverpress than did water-reinforced rats on the same schedules. Mean lever-contact-duration differences between food- and water-reinforced rats were greatly attenuated or disappeared under FR 4-, FR 8-, FI 20-sec, and FI 30-sec schedules of reinforcement. These results are interpreted as supporting earlier hypotheses that there are respondent components of operantly conditioned and autoshaped leverpresses, but that these respondent components weaken with partial reinforcement and the leverpress topography comes under the control of operant contingencies.  相似文献   

Movement coordination and movement variability     

Roger Bartlett 《Sports biomechanics / International Society of Biomechanics in Sports》2013,12(2):119-120

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Treatment of child abuse: common ground for mental health, medical, and legal practitioners: Edited by Robert M. Reece; The Johns Hopkins University Press, Baltimore, MD, 2000, 378 pages, $67.00 hardcover.     

John E. B. Myers JD 《Child abuse & neglect》2001,25(12):1661

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