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Competitiveness and hemodynamic reactions to competition.

Jet J C S Veldhuijzen van Zanten1, Dolf De Boer, Lesley K Harrison

  • 1School of Sport and Exercise Sciences, University of Birmingham, UK. jjv016@bham.ac.uk

Psychophysiology
|December 5, 2002
PubMed
Summary

Competition significantly impacts cardiovascular hemodynamics, increasing hematocrit and blood pressure. State competitiveness, not trait competitiveness, correlates with physiological stress markers during racing.

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Area of Science:

  • Physiology
  • Sports Science
  • Psychology

Background:

  • Understanding the physiological responses to competitive situations is crucial for sports science and psychology.
  • Previous research has explored stress responses, but the specific hemodynamic effects of varying competitive contexts require further investigation.

Purpose of the Study:

  • To investigate the hemodynamic and hematological effects of competition and varying levels of competitiveness.
  • To differentiate the physiological impact of racing against oneself versus an opponent.

Main Methods:

  • Cardiovascular activity (blood pressure, heart rate, preejection period, heart rate variability) and hematocrit were measured in 27 men during a car racing simulation.
  • Participants completed a solo race and three races against an experimenter, with trait competitiveness assessed via questionnaire.

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Main Results:

  • Competition increased hematocrit, blood pressure, heart rate, and total peripheral resistance, while decreasing preejection period and heart rate variability.
  • Interpersonal racing, rated as more competitive than solo racing, induced shorter preejection periods and faster heart rates, indicative of beta-adrenergic activation.
  • State competitiveness, but not trait competitiveness, was associated with these observed physiological changes.

Conclusions:

  • Competitive situations elicit significant hemodynamic and hematological changes, reflecting physiological stress.
  • The degree of perceived competitiveness (state competitiveness) is a key factor influencing beta-adrenergic activation during competitive tasks.
  • These findings highlight the body's adaptive cardiovascular responses to social-evaluative performance contexts.