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Biomedical subjects

L Burwitz

Publications and source records attributed to L Burwitz.

8 recordsLinked to original sources
PubMed1994

Future directions for performance-related sports science research: an interdisciplinary approach.

The present paper is based on a review which was commissioned by the Sports Council (London) on behalf of the Open Section of the British Association of Sports Sciences (BASS). This was one of four such reviews which were collectively designed to provide information pertinent to the formulation of a strategy that would guide fundamental sports science research in the UK until the year 2000. All of the reviews were expected to focus on research that was relevant to the performance of the elite athlete and the specific brief of the Open Section Review was to concentrate on interdisciplinary research. The current paper established the unique value of interdisciplinary sports science research. Four themes were considered in some detail in order to review the extant interdisciplinary research and propose directions for future research involving an interdisciplinary approach. The four topics were talent identification, adherence, injuries and peaking. A critical review of each area revealed a lack of interdisciplinary research and recommendations for future research priorities were made. The paper is concluded with a brief outline of a strategy that would facilitate the development and expansion of interdisciplinary sports science research.

Athletic Injuries↗
PubMed1994

Visual search strategies in experienced and inexperienced soccer players.

This study investigated skill-based differences in anticipation and visual search strategy within open-play situations in soccer. Experienced (n = 15) and inexperienced (n = 15) subjects were required to anticipate pass destination from filmed soccer sequences viewed on a large 3-m x 3-m video projection screen. MANCOVA showed that experienced soccer players demonstrated superior anticipatory performance. Univariate analyses revealed between-group differences in speed of response but not in response accuracy. Also, inexperienced players fixated more frequently on the ball and the player passing the ball, whereas experienced players fixated on peripheral aspects of the display, such as the positions and movements of other players. The experienced group fixated on significantly more locations than their inexperienced counterparts. Further differences were noted in search rate, with experienced players exhibiting more fixations of shorter duration. The experienced group's higher search rate contradicted previous research. However, this resulted from using 11 on 11 film sequences, which were never previously used in visual search research. The increased frequency of eye fixations was regarded as being more advantageous for anticipating pass destination during open play in soccer. Finally, a number of practical implications were highlighted.

Adult↗
PubMed1988

Precompetitive anxiety and motor performance: a psychophysiological examination.

Male volunteer subjects (27) completed a 5-week habituation period during which practise was undertaken on three motor performance tests. Tests were of serial reaction time, visuomotor ability and muscular power. Following stabilization of performance subjects entered an experimental period where they performed the tests before an evaluative audience on one occasion, and against a matched opponent, also before an evaluative audience on the final occasion. Preperformance measures were obtained of neuroendocrine activity, anticipatory heart rate and state anxiety. Significant precompetition elevations in state anxiety, heart rate and adrenaline levels were observed, supporting the notion that the exposure was perceived as stressful by subjects. Significant correlations were obtained between adrenaline levels and both state and trait anxiety scores. Results showed a significant increase in performance compared to habituation levels for all three tests in the audience condition. In the competitive situation against a matched opponent, performance level for the visuomotor and power tests declined significantly compared to the previous session performed before an audience. Serial reaction time performance showed a continuing upward trend, although failing to achieve significance. Changes in performance are discussed with reference to cue-utilization explanations and broader cognitive resource limitations.

Adolescent↗