Caffeine ingestion enhances perceptual responses during intermittent exercise in female team-game players     

Ajmol Ali  Jemma O’Donnell  Pamela Von Hurst  Andrew Foskett  Sherina Holland  Carlene Starck 《Journal of sports sciences》2016,34(4):330-341

We examined the influence of caffeine supplementation on cognitive performance and perceptual responses in female team-game players taking low-dose monophasic oral contraceptives of the same hormonal composition. Ten females (24 ± 4 years; 59.7 ± 3.5 kg body mass; 2–6 training sessions per week) took part in a randomised, double-blind, placebo-controlled crossover-design trial. A 90-min intermittent treadmill-running protocol was completed 60 min following ingestion of a capsule containing either 6 mg ? kg^?1 anhydrous caffeine or artificial sweetener (placebo). Perceptual responses (ratings of perceived exertion (RPE), feeling scale (FS), felt arousal scale (FAS)), mood (profile of mood states (POMS)) and cognitive performance (Stroop test, choice reaction time (CRT)) were completed before, during and after the exercise protocol, as well as after ~12 h post exercise. Caffeine ingestion significantly enhanced the ratings of pleasure (P = 0.008) and arousal (P = 0.002) during the exercise protocol, as well as increased vigour (POMS; P = 0.007), while there was a tendency for reduced fatigue (POMS; P = 0.068). Caffeine ingestion showed a tendency to decrease RPE (P = 0.068) and improve reaction times in the Stroop (P = 0.072) and CRT (P = 0.087) tests. Caffeine supplementation showed a positive effect on perceptual parameters by increasing vigour and a tendency to decrease fatigue during intermittent running activity in female games players taking low-dose monophasic oral contraceptive steroids (OCS).  相似文献   

Villainy,incompetence, and foolishness: Correspondence study in fiction     

Von V. Pittman 《Distance Education》1988,9(2):225-233

Like other professions and vocations, correspondence study has provided the inspiration and setting for works of fiction. Novelists and short story writers have used correspondence study to convey broad humour, satire, and tragedy. They have also used it for such genre writings as murder mysteries and science fiction. For the most part, fictional portrayals are negative and exaggerated, with many characters drawn from stereotypes. In spite of this, correspondence study and distance education instructors and administrators should find these portrayals of themselves and their work enjoyable, and perhaps even useful.  相似文献   

Book reviews     

Von Sanderson  Christopher Hickey  Annette Gough 《The Australian Educational Researcher》2003,30(1):123-135

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Speaking Personally—With Hal Markowitz     

Von Pittman 《The American journal of distance education》2013,27(1):66-72

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The School and the Reduction of Inequality∗     

Jacques Vonèche 《牛津教育评论》2013,39(3):263-265

ABSTRACT

The need to develop reasoning skills in children through discussion is generally acknowledged by curriculum aims. There is, however, a lack of any definite teaching strategy to fulfil this need. Matthew Lipman's Philosophy for Children programme has had success in this area. As with other ‘collaborative enquiry‐based’ approaches to learning, it depends upon a teaching strategy which enhances children's self‐esteem. This seems a necessary ingredient for the development of rationality, critical awareness and autonomy in children. Inadequate teacher training is suggested as a major reason for the failure of ‘collaborative’ approaches greatly to influence educational practice. With a shift away from the ‘authority/knowledge‐based’ paradigm and the provision of effective teacher training, it is considered that our educational institutions could become more democratically organised, and we would move closer to realising the liberal ideal of developing human potential to the full.  相似文献   

The Material Gene: Gender,Race, and Heredity after the Human Genome Project     

Ron Von Burg 《Quarterly Journal of Speech》2013,99(4):655-659

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Psycholinguistic abilities in children with epilepsy.     

A Von Isser 《Exceptional children》1977,43(5):270-275

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The persistence of print: Correspondence study and the new media     

Von V. Pittman Jr. 《The American journal of distance education》2013,27(1):31-36

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The influence of trained peer tutoring on tutors' motivation and performance in a French boxing setting     

Legrain P  D'Arripe-Longueville F  Gernigon C 《Journal of sports sciences》2003,21(7):539-550

The aim of this study was to examine the potential motivational and behavioural benefits of two peer tutoring programmes for tutors in a sport setting. Differences between the sexes were also explored. Thirty two college-age males and females, all novices on a French boxing task, were assigned to a 2 x 2 [sex x training type: physical practice associated with trained peer tutoring (TPT) vs physical practice associated with untrained peer tutoring (UPT)] factorial design. All participants were given six French boxing lessons of 2 h each. The TPT programme included structured methods to prepare the participants to fulfil their role of tutors, whereas the UPT programme did not. The results demonstrated that the TPT programme resulted in higher scores for coaching skills. Furthermore, interaction effects revealed that the TPT programme yielded better offensive outcomes for males and better defensive outcomes for females. Although the UPT participants expressed higher self-efficacy, no differences emerged for intrinsic motivation and causal attributions. Finally, male tutors displayed higher self-efficacy and offensive outcomes than female tutors. The results are discussed in the light of previous findings in the educational and sport psychology literature.  相似文献   

Situational indexes of achievement motivation, help-seeking, and performance: influences of the learning context and gender differences     

Gernigon C  d'Arripe-Longueville F  Debove V  Puvis A 《Research quarterly for exercise and sport》2003,74(4):473-479

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