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[Psychophysiological reactivity in relation to type A behavior].

D Pfiffner, B Lanfranconi, R Nil

    Sozial- Und Praventivmedizin
    |January 1, 1986
    PubMed
    Summary

    Type A behavior pattern in men showed increased physiological reactivity in body movement and EMG during speech tests, not cardiovascular responses. These findings highlight specific stress indicators linked to Type A personality.

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    Area of Science:

    • Psychophysiology
    • Behavioral Medicine
    • Cardiovascular Health

    Background:

    • The Type A behavior pattern is associated with increased stress.
    • Previous research has focused on cardiovascular reactivity to stress.
    • Understanding diverse physiological responses is crucial.

    Purpose of the Study:

    • To investigate the relationship between Type A behavior and physiological stress reactivity.
    • To compare cardiovascular and non-cardiovascular responses in Type A versus Type B men.
    • To identify reliable physiological indicators of Type A behavior.

    Main Methods:

    • Seventy-seven healthy men were assessed.
    • Participants were categorized into Type A (n=26) and Type B (n=12) based on behavior patterns.

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  • Physiological variables including heart rate, blood pressure, electromyography (EMG), and body movement were measured during speech tests.

    • Main Results:

    • Type A men did not exhibit significantly higher cardiovascular reactivity compared to Type B men.
    • Type A men showed greater reactivity in body movement, EMG, and respiration frequency.
    • Body movement and EMG were the strongest predictors of Type A behavior, particularly during speech tasks.

    Conclusions:

    • Physiological responses beyond cardiovascular measures are key indicators of Type A behavior.
    • Body movement and EMG offer valuable insights into stress reactivity in Type A individuals.
    • Speech tests effectively reveal specific physiological differences related to Type A behavior patterns.