Philosophers of sport seem to have lived happily with the idea that the knowledge in sporting skills is knowing how. In traditional epistemology, knowing how does not qualify to be knowledge proper since knowledge is a question of whether a belief is true and justified. Unless knowing how is a special case of knowing that, it is not knowledge. The argument for such an identification arises saying that a former expert in tennis has tennis know-how, although she cannot perform skillfully. (...) If we do not need ability to perform a skill and still have know-how, it seems reasonable to say that know-how is a type of knowing that. With such a move, skills are perhaps not identical to know-how. Are we then left with the idea that there isn’t any knowledge in sporting skills? If we stick with the idea that a fine forehand is indeed an able forehand, the question of what knowledge skills contain remains. This article aims to discuss and shed light on issues related between knowledge, knowing h... (shrink)

This study evaluated the effects of an exergame program combined with traditional tennis training on autonomic regulation, tennis technique, gross motor skills, clinical reaction time, and cognitive inhibitory control in children. Sixty-three children were randomized into four groups and compared at baseline, 6-month immediately post intervention and at 1-year follow-up post intervention. At 6-month post intervention the combined exergame and regular training sessions revealed: higher breathing frequency, heart rate and lower skin conductance levels during exergaming; additional benefits in the point (...) of contact and kinetic chain elements of the tennis forehand and backhand technique ; negative impact on the shot preparation and the follow-through elements ; higher ball skills ; higher percentages of clinical reaction time improvement and cognitive inhibitory control improvement in both congruent and incongruent trials. The 1-year follow-up test showed no differences in the tennis technique, clinical reaction time and cognitive inhibitory control improvement between groups with the same number of trainings per week. The findings support exergaming as an additional training tool, aimed to improve important cognitive-motor tennis skills by adding dynamics to the standardized training process. Caution should be placed to planning this training, e.g., in a mesocycle, since exergaming might decrease the improvement of specific tennis technique parts of the trainees.. (shrink)

In lieu of an abstract, here is a brief excerpt of the content:Philosophy, Psychiatry, & Psychology 10.2 (2003) 133-134 [Access article in PDF] Fictional Beings J. M. Coetzee What Does It Mean, "To Understand"? A tennis coach is teaching a young player a forehand topspin drive. He does so with a mixture of demonstrations (nonverbal) and explanations (verbal), such as, "At the moment of impact you roll the wrist over like this" (demonstrates). The player tries the stroke again and (...) again, and each time the coach shakes his head and says, "You haven't got it yet." Then the player gets the stroke right. The coach says "Now you've got it! Now you understand! Now let's do it again!"Is this a legitimate use of the word understand? I think it is. The coach intends the following: At first you may have understood my words but from your actions—the practice strokes you played—I could not see that you had understood my meaning. Then, when you got the stroke right, and could repeat it, I saw that you had finally understood the meaning behind my words.Understanding is in this case the effective translation of words, or words plus demonstrations, into actions, where effectiveness can be easily measured. The translation is from a verbal, or mixed verbal, system into an entirely nonverbal system of electrochemical impulses.Conversely, one can picture an exhaustive analysis of forehand topspin drives by André Agassi, conducted by microphotography, implanted sensors, and so on, to issue in a mixed verbal and diagrammatic account of how Agassi plays the stroke. In this case the physiologic system of the stroke has been successfully translated into a (partially) verbal system. Again, it would be meaningful to say that the sports physiologist who does the analysis has come to understand how the stroke is played.Although in both these cases understanding is conceived of as a translation process, I concentrate from here onward on the translation process from the verbal to the nonverbal, exemplified by understanding how to play a particular stroke.The coach says X and the player tries to "do" X, but fails and fails, until finally he succeeds. When the player has at last "done" X, he has understood. Thereafter, by steps, the player ceases to depend on the coach and the coach's X: the player can do X by himself; he understands X in the sense that whenever he says X to himself he can do X. He has made X his own.I read The Sound and the Fury, the part devoted to Benjy. Benjy says X and I don't understand. I understand the words on the page one by one, many of the sentences I understand one by one in the sense that I can translate them into other English sentences, but I don't understand the logic that gets Benjy from one sentence to the next, I don't understand the references of many words that are usually referential, and sometimes I am baffled by the syntax.For whatever reason, I go on reading Benjy. In a few respects I begin to understand better. For instance, there are sentences that stop in midstride, and I begin to suspect that such sentences stop because Benjy does not want to think what [End Page 133] comes next—that is to say, that the Faulkner behind Benjy means me to understand that Benjy lacks the wherewithal to face what would naturally come next. Mainly, however, I remain in the dark.Then I begin to experience something interesting. I find that I am, in my mind, going through some of the movements of Benjy's language. I am, as it were, practicing the characteristic strokes of his game. Although I remain, for the most part, unable to translate his pages into connected discourse—that is, into a discourse in which the logical connection between one sentence and the next is, however faulty, at least clear—I am better and better able to "do" Benjy."Doing" Benjy in this case means more than parrot-like repetition of Benjy's words. I can now speak of "entering Benjy" in a way that makes sense. I... (shrink)

Parameters of a Bertalanffy type of temperature dependent growth model are fitted using data from a population of stone loach ( Barbatula barbatula ). Over two periods respectively in 1990 and 2010 length data of this population has been collected at a lowland stream in the central part of the Netherlands. The estimation of the maximum length of a fully grown individual is given special attention because it is in fact found as the result of an extrapolation over a large (...) interval of the entire lifetime. It is concluded that this parameter should not at forehand be set at one fixed value for the population at that location due to varying conditions over the years. (shrink)

The Genetic Privacy Act is a comprehensive effort to protect individuals from unauthorized analysis of their DNA and from unauthorized disclosure of information resulting from genetic analysis. Irrespective of merit, every bill must survive legislative scrutiny. This is a considerable challenge, particularly for a bill as complex and far-reaching as the GPA. To illustrate my point, I describe the fate of two bills introduced into the Maryland Senate in 1995 by Senator Jennie Forehand. The first, also entitled the Genetic (...) Privacy Act, was a slightly modified version of the model legislation prepared by Annas, Glantz, and Roche. After a hearing, the bill received a 9-2 unfavorable vote from the Economic and Environmental Affairs Committee. The second was a much shorter bill, DNA Testing – Informed Consent and Confidentiality, which simply stated that “DNA analysis may only be performed with the informed consent of the person being analyzed” and that the results of such analysis “are the exclusive property of the person tested, are confidential, and may not be disclosed without the consent of the person being tested.” This bill had a hearing but was never put to a vote by the Judicial Proceedings Committee. My principal aim is to examine the testimony on these bills. I will conclude with some suggestions about accomplishing the goals of genetic privacy legislation. (shrink)

The purpose of this study was to identify the effects of the technical and context-related variables of last strokes in rallies on the point outcomes of both men’s and women’s players in elite singles badminton matches. A total of 100 matches during the 2018 and 2019 seasons were analyzed, and the data of 4,080 men’s rallies and 4,339 women’s rallies were collected. The technical variables including strokes per rally, forehand strokes, overhead strokes, and defensive action, and the context-related variables (...) including game status, result against serve, importance of rally, and importance of set, were modeled with Probit regression modeling as the predictor variables. The binary variables of “winner or not” and “error or not” were considered the response variables. The results showed that defensive actions had the greatest impacts on the winners and errors of both the men’s and women’s singles players, and the forehand and overhead strokes were negatively associated with the winners and errors of the women’s singles players and the winners of the men’s singles players. No significant effects were found for the strokes per rally on the winners and errors of the men’s singles players, while significant effects were found for the women’s singles players. The context-related variables appeared to have positive effects on the winners and negative effects on the errors of both sexes. These findings can provide important insights for coaches and players to evaluate their performances of last strokes in rallies and to improve training interventions and match tactics and strategies. (shrink)

This study aims to evaluate the changes in shot characteristics of elite women table tennis players through the longitudinal analysis of women's singles finals and semifinals from 2004 to 2021 Olympic Games. A total of 13 games were selected, and the stroke position, stroke type, ball placement, and stroke efficacy of 5,877 shots were analyzed using the notational analysis method. A chi-square test was used to test whether the shot characteristics had changed between game years, and the adjusted residual was (...) calculated to judge these changes. In the four dimensions, namely, stroke position, stroke type, ball placement, and stroke efficacy, the shot characteristics of women table tennis players have changed with the year of the Olympic Games. The backhand stroke position has an upward trend from 55.0 to 58.1%, and the type of flip stroke has a downward trend from 7.6 to 2.1%. The ball placements of forehand and middle long have two fluctuations first rising from 11.2 to 12.7% and 20.3 to 23.7% and then falling from 12.7 to 5.3% and 23.7 to 16.0%. Moreover, backhand long is being increasingly used. In the year of equipment change, the proportion of neutral stroke increases from 40.0 to 61.5%. Once the players have become adapted to the equipment, the proportion of neutral stroke decreases from 61.5 to 48.5%. The development trend of women table tennis players is that the extreme stroke will be further increasingly used. Results suggest that elite women table tennis coaches and players should focus on the technical training in the forehand and backhand positions, strengthen the practice of topspin and block, and pay attention to the backhand long landing area. Women's table tennis coaches and players also need to pay close attention to the possible impact of changes in rules and equipment and carry out targeted training in advance to minimize the impact on the stroke efficacy of players. (shrink)

It is argued that since its institutionalization in the 1970s, Uses and Gratifications research has been heavily influenced by applied economic theories about Expectancy Value and Subjective Expected Utility. Underlying these theories are assumptions about the acting individual having full mastery of situations. This idea is contrasted with the way in which action theory portrays action. Here, mastery of situations is not assumed at forehand, but depends on the situation and is something that has to be achieved. Action theories (...) further emphasize the influence of others. Applying these ideas to the study of media use means that more attention has to be paid to processes of gaining mastery, to situational influences, and to the influence of others. It is argued that discrete-time event history analysis may be a valuable tool to accomplish this. This may contribute to the study of several important questions in communication research, regarding audience flow and audience selectivity, and the social uses of media use. (shrink)

Although various sections of this work have been published separately in various journals and volumes their separate publication is wholly attributable to the exigencies of life in academia: the work was devised as and is supposed to constitute something of an organic unity. Part II of 'The Cow with the Subtile Nose' was published under the title 'A Creative Use of Language' in New Literary History (Autumn, 1972), pp. 108-18. 'The Cow on the Roof' appeared in The Journal oj Philosophy (...) LXX, No. 19 (November 8, 1973), pp. 713-23. 'A Fine Forehand' appeared in the Journal oj the Philosophy oj Sport, Vol. 1 (September, 1974), pp. 92-109. 'Quote: Judgements from Our Brain' appeared in Perspectives on the Philosophy oj Wittgenstein, ed. by I. Block (Oxford: Basil Blackwell, 1981), pp. 201-211. 'Art and Sociobiology' appeared in Mind (1981), Vol. XC, pp. 505-520. 'Anything Viewed'appeared in Essays in Honour oj Jaakko Hintikka, ed. by Esa Saarinen, Risto Hilpinen, Illkka Niiniluoto and Merrill Provence Hintikka (Dordrecht, Holland and Boston, Massachusetts: D. Reidel Publishing Co., 1979), pp. 285-293. 'How I See Philosophy' appeared in The Owl oj Minerva, ed. by C. J. Bontempo and S. Jack Odell (New York: McGraw-Hill Book Co., 1975), pp. 223-5. All the remaining parts are also forthcoming in various journals and volumes. I am grateful to Bradley E. Wilson for the preparation of the index. (shrink)