Neural adaptations with sport-specific resistance training in highly skilled athletes

The aim of this study was to assess the effects of variations in the volume and intensity of resistance training in highly skilled athletes on neural adaptive mechanisms: the maximality and pattern of neural drive. The maximality of muscle activation was measured using a high-resolution sample and hold amplifier to record interpolated twitches. The pattern of neural drive was measured by analysing isometric torque-time curves and electromyographic (EMG) characteristics during the performance of rapid isometric contractions at maximal effort. The volume and intensity of training were varied at 4-weekly intervals to systematically emphasize the development of strength, power and motor performance in 14 highly skilled track and field athletes (e.g. discus, hammer, javelin, shot put and weight). Knee extension strength increased significantly by 15% during steady maximal isometric contractions and by 24% during rapid isometric contractions at maximal effort after the 16-week training programme (P < 0.05). Increases in EMG amplitude and rate of EMG activation indicated that improvements to the pattern of neural drive occurred with sport-specific resistance training (P < 0.05). The maximality and pattern of neural drive did not change in the control group.     

Expanded Koppitz scoring system of the bender gestalt visual-motor test for adolescents: A pilot study

The current research represented a pilot study to assess the use of the Bender Gestalt Visual-Motor Test with school-age adolescents over 11 years of age. Research regarding the accuracy of the hypothesis that visual-motor integration functioning is normally intact by age 11 was presented. In addition, initial data to extend the Koppitz scoring system of the Bender for ages 11 years, 6 months through 15 years, 11 months was proposed. Mean error scores from the pilot study suggested that visual-motor development is not maturationally complete by age 11 years, 11 months. Additional research focusing on extending the normative sample or developing a new scoring system for adolescents is suggested.     

The magnitude and prevalance of significant regressed discrepancies at common test values

An initial criterion to determine severe discrepancies and relative strengths and weaknesses is a significant difference between regressed standard scores. Tables are presented as a convenient method to determine the magnitude of a discrepancy required for significance at common reliability and inter-correlation values. Prevalences of significant discrepancies are also shown, indicating that significant discrepancies are not uncommon in a normal population.     

The concurrent validity of the Cognitive Levels Test with the Wechsler Intelligence Scale for Children-Revised for a sample of referred children and youth

The present investigation compared the Cognitive Levels Test (CLT) and the Wechsler Intelligence Scale for Children-Revised (WISC-R) scores for 55 children who were referred for remedial educational services. A comparison of the correlations for each of the criterion measures from the WISC-R showed a consistent significant positive relationship with the CLT. A repeated measures analysis of variance that compared standard scores for the CLT with those of the WISC-R indicated that significant differences existed between WISC-R IQs and the CLT Cognitive Index. Implications concerning the validity of the Cognitive Levels Test are discussed.     

Contractual school psychological services: Prevalence and practices

This study investigated the prevalence and practices of contract school psychological services in public schools. A survey was sent to all 121 school districts in a southeastern state, with 111 surveys completed for a response rate of 92%. Results indicated that most school districts did not believe that contracting is cost effective. The primary service provided by contractual service providers was triennial reevaluations. The administrator most often charged with the hiring and supervision of contract providers was not a school psychologist. The credential most often required of a contracting psychologist was a State Board of Psychology license, with only a few requiring documentation of relevant coursework or experience. The results of this study indicated that the most pressing concern for the profession of school psychology regarding contractual services is ensuring that contract services are provided and monitored according to appropriate standards of practice. © 2000 John Wiley & Sons, Inc.     

Munchausen syndrome by proxy: A family affair

Munchausen syndrome by proxy is an unusual form of child abuse: a child presents with an illness that has been factitiously produced by a parent, typically the mother. A case of chronic illicit insulin administration to a one-year-old girl is described. Despite temporary separation of the child from the mother and long-term psychiatric intervention, factitious illnesses continued, including urine specimen contamination, laxative-induced diarrhea, suspected bladder catheterization, and suspected poisoning. Retrospective review of the medical records of the mother and two siblings demonstrated previously unrecognized evidence of factitious illnesses. The medical records contained evidence of 30 separate episodes of suspected or documented factitious illness in these four members of the same family. This unique family illustrates the significant morbidity of Munchausen syndrome by proxy and a poor response to psychiatric treatment.     

Advances in the application of information technology to sport performance

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.     

中美青少年参加体育活动影响因素的比较研究

科学研究已证明:体育活动有助于身心健康。但事实表明,青少年参与体育活动的人数却在减少。本研究以中国东部沿海的浙江省和美国中北部的爱荷华州这两个经济、教育实力相对较为接近地区的青少年作为研究对象,把不同性别、不同年级等特征条件下,影响这两个地区青少年参与体育活动的因素作为研究内容进行比较分析,从比较中得出启迪,为我国青少年更好地开展体育活动,促进其身心健康提供一份依据。     

The Welfare to Work Transition in the United States: Implications for Work-Related Learning

This paper summarizes the legislation upon which the current welfare-to-work transition in the United States is based and describes characteristics of the former welfare population from which various tiers of employment options have emerged: unsubsidized-employed workers, subsidized-employed workers, subsidized-unemployed recipients, and unsubsidized-unemployed individuals. It also discusses current program emphases, and presents a format for directions for future program development which includes academic programs, situated cognition programs, integrated literacy/occupational skills programs, and integrated literacy/soft skills training.