Electromyographic analysis of bow string release in highly skilled archers

A predominant archery coaching tenet holds that the most effective means of releasing the bow string is by relaxation of the finger flexor muscles without activation of finger extensors. To evaluate the validity of this view, EMG patterns of the flexor digitorum superficialis and extensor digitorum muscles of the draw arm were examined using surface EMG electrodes in 15 highly skilled archers as each performed six shots. Each archer displayed consistent EMG patterns from shot-to-shot and two distinct flexor-extensor patterns were exhibited by the sample. The first, characterized by eight of the archers, supported the relaxation principle. For these archers, both flexor and extensor digitorum activity decreased markedly immediately prior to or at arrow release. The second pattern, characteristic of the remaining seven archers, contradicted the coaching tenet. While the flexor digitorum pattern was essentially the same as that described for the first pattern, the extensor digitorum displayed a marked increase in activity just prior to release, indicating that string release was facilitated by an active extension of the fingers. It was concluded that highly skilled archers do not predominantly reflect a release consistent with the coaching canon and that factors other than the string release mechanism discriminate the performances of skilled archers.     

Effect of time of day on perceived exertion at work rates above and below the ventilatory threshold

The effect of time of day on ratings of perceived exertion (RPE) at various intensities of cycling exercise, both below and above the ventilatory threshold, was studied in 32 subjects, 18 to 35 years of age. The ventilatory threshold occurred at the same (p greater than .05) mean (+/- SD) work rate in the morning (110.6 +/- 27.0 watts) and in the afternoon (111.9 +/- 23.9 watts) and was perceived as equally strenuous (p greater than .05) in the morning (RPE = 13.8 +/- 2.4) and in the afternoon (RPE = 13.6 +/- 2.8). At intensities below the ventilatory threshold, RPE was the same (p greater than .05) in the morning and in the afternoon; above the ventilatory threshold, RPE was lower (p less than .05) in the morning. We conclude that, during incremental submaximal cycling exercise above the ventilatory threshold, a particular work rate is perceived as less strenuous in the morning than in the afternoon. About 20% of this difference in RPE is explained by lower ventilatory demands in the morning.     

Engineering Education and Industry in Greece: towards a long overdue convergence

Engineering education has a long and satisfactory developmental history in Greece. On the other hand, industrial development, which is the product of systematic government policy of the post-war period, presents mixed results. It is a fact that engineering education, at least to the extent represented by formal, structured university curricula, has not been associated in any direct way with industry, for a variety of reasons—structural, economic, and administrative, originating both in industry and university. The scene appears to be changing in recent years, under pressure from many sides. It remains to be seen whether the long overdue convergence of the two systems will materialise in the near future.     

The Skilled Counselor Training Model: Skills Acquisition,Self‐Assessment,and Cognitive Complexity

The authors evaluated the effectiveness of the Skilled Counselor Training Model (SCTM; M. H. Smaby, C. D. Maddux, E. Torres‐Rivera, & R. Zimmick, 1999) in teaching counseling skills and in fostering counselor cognitive complexity. Counselor trainees who completed the SCTM had better counseling skills and higher levels of cognitive complexity than did counselor trainees who did not receive the training. Before training, both experimental and control group participants overestimated their skills performance. The control group persisted in this overestimation after training, whereas students who completed the SCTM had a much more accurate self‐assessment. Results suggest that skills‐based training may improve counseling skills and cognitive complexity in counselor trainees.     

How to Conceive of Critical Educational Theory Today?

This paper starts from a brief sketch of the ‘classical’ figure of critical educational theory or science (Kritische Erziehungswissenshaft). ‘Critical educational theory’ presents itself as the privileged guardian of the critical principle of education (Bildung) and its emancipatory promise. It involves the possibility of saying ‘I’ in order to speak and think in one's own name, to be critical, self‐reflective and independent, to determine dependence from the present power relations and existing social order. Actual social and educational reality and relations are approached as a limitation, threat, alienation, re/oppression or negation of ultimate human principles or potential. The task of critical educational theory becomes one of enabling an autonomous, critical, self‐reflective life. While ‘critique’ and ‘autonomy’ have meanwhile become commonplace, and ‘critique’ and ‘autonomy’ are reclaimed and required from everybody, we should also consider the question of the relation between an institutional or ideological framework as that which claims to question this frame and to constitute its opposite. The trivialisation of critique is taken as occasion to recall Michel Foucault's analysis of power relations and especially his thesis according to which the ‘government of individualisation’ is the actual figure of power. Starting from the framework offered by Foucault, it can be made clear that the autonomous, critical, self‐reflective life does not represent an ultimate principle but refers to a very specific form of subjectification operating as a transmission belt for power. The autonomous, critical, self‐reflective person appears as an historical model of self‐conduct whereby power operates precisely through the intensification of reflectiveness and critique rather than through their repression, alienation or negation. This brings us back then to the question of how to conceive of the task of a critical educational theory at a time in which critique, autonomy and self‐determination have become an essential modus operandi of the existing order.