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141.
Luke Wilkins Lawrence Gregory Appelbaum 《International review of sport and exercise psychology》2020,13(1):65-80
ABSTRACT Stroboscopic visual training (SVT) is a form of training in which an individual practices a task under intermittent visual conditions with the intention of enhancing subsequent performance under normal visual conditions. Training with stroboscopic devices is theorized to improve important visual, perceptual, and cognitive skills, which in turn transfers to enhanced sporting performance. Indeed, while there is an abundance of anecdotal evidence suggesting benefits of strobe training, empirical evidence is rarer and less conclusive. This lack of clarity is due, in part, to the challenging methodological issues faced when conducting experimental vision training studies in applied contexts. The present paper is an early review of the research to date with a focus on the key methodological decisions, such as the training and testing protocols employed, participant samples and control groups used, and practical considerations that enable such training in applied settings. Whilst still at an early stage, the existing studies point to SVT enhancing some aspects of foveal visual sensitivity and visual motor control, with notable benefits for some athletic tasks. Such improvements could have implications not just in sport, but in domains such as rehabilitation, education, and motor vehicle safety. 相似文献
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Gregory S. Blimling 《About Campus》2004,9(3):2-9
Looking for amazing research that will make the nightly news or turn an administrator's head? If you find it, be warned. The findings may have been reported out of context or based on faulty logic. 相似文献
145.
Licking behavior of rats maintained by lick-contingent water reinforcement, produced electric shocks under three conditions. Shock occurred 1 sec before, simultaneous with, or 1 sec after water reinforcement. Rates of licking rose above prepunished levels at .2-, .4-, and .6-mA intensities but were suppressed at .8 mA for all three groups. Facilitation and suppression effects were the same for the three pairing conditions. Discriminative and elicited functions of shock did not appear to account for this facilitative effect. 相似文献
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Christopher Carling Paul Bradley Alan McCall Gregory Dupont 《Journal of sports sciences》2016,34(24):2215-2223
ABSTRACTThis study investigated variability in competitive high-speed running performance in an elite soccer team. A semi-automated tracking system quantified running performance in 12 players over a season (median 17 matches per player, 207 observations). Variability [coefficient of variation (CV)] was compared for total sprint distance (TSD, >25.2 km/h), high-speed running (HSR, 19.8–25.2 km/h), total high-speed running (THSR, ≥19.8 km/h); THSR when the team was in and out of ball possession, in individual ball possession, in the peak 5 min activity period; and distance run according to individual maximal aerobic speed (MAS). Variability for % declines in THSR and distance covered at ≥80% MAS across halves, at the end of play (final 15 min vs. mean for all 15 min periods) and transiently (5 min period following peak 5 min activity period), was analysed. Collectively, variability was higher for TSD versus HSR and THSR and lowest for distance run at ≥80% MAS (CVs: 37.1%, 18.1%, 19.8% and 11.8%). THSR CVs when the team was in/out of ball possession, in individual ball possession and during the peak 5 min period were 31.5%, 26.1%, 60.1% and 23.9%. Variability in THSR declines across halves, at the end of play and transiently, ranged from 37.1% to 142.6%, while lower CVs were observed in these metrics for running at ≥80% MAS (20.9–53.3%).These results cast doubt on the appropriateness of general measures of high-speed activity for determining variability in an elite soccer team, although individualisation of HSR thresholds according to fitness characteristics might provide more stable indicators of running performance and fatigue occurrence. 相似文献
149.
Introduction to Symposium on Globalisation 总被引:1,自引:0,他引:1
150.
Gregory A. Jackson 《Community College Journal of Research & Practice》2013,37(2):141-166
The Jarvis‐Gann amendment to the California constitution cut property taxes by almost 60%. The state's community‐college system, the largest and among the oldest in the country, depends heavily on property taxes, and consequently faces a constrained future. This study sought some indication of the responses these constraints would bring. Based on six case studies, in the late summer of 1978, colleges’ major responses appear to have been general cuts across all programs and activities. Where these were insufficient, colleges often cut community‐service activities, eliminated weekend or evening classes, spent excess reserves, or deferred major expenditures for maintenance or compliance with legal obligations. The result, for the present, is roughly the same mix and level of services, although convenience and flexibility have been reduced. The future looks much bleaker: salaries, at first effectively frozen by state law, will have to increase; state support in lieu of property taxes will stabilize or decline; and enrollments will also stabilize or decline. In these circumstances colleges will either have to reduce the services they provide or, as the concluding analysis in this paper suggests, seek legislative permission to begin charging moderate tuition. 相似文献