What question did this study set out to answer?

This study investigates how different challenge levels affect cardiovascular responses in Type A and Type B individuals.

June 1, 1979Journal of Applied Social Psychology

Effect of Level of Challenge on Pressor and Heart Rate Responses in Type A and B Subjects1

Q: What is the clinical evidence from this study?

Study design: RCT. Population: Type A coronary-prone behavior pattern (n=80). Intervention: High challenge instructional condition vs. Low challenge instructional condition. Primary outcome: Systolic blood pressure (SBP) and heart rate (HR) elevation.

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Key result

Type A subjects exhibited greater systolic blood pressure and heart rate elevations than Type B subjects across both high and low challenge tasks.

Why the study?

Does the level of environmental challenge affect systolic blood pressure and heart rate responses differently in Type A versus Type B subjects?

Population

Type A (coronary-prone) and Type B (noncoronary-prone) subjects (n=80)

Comparison

High challenge instructional conditions for cold… vs Low challenge instructional conditions for cold…

Design

RCT, Randomly assigned to either high or low challenge instructional conditions

Authors

TDThéodore M. DembroskiUniversity of Nebraska at Omaha JMJames M. MacDougallUniversity of California, Riverside JHJ. Alan HerdFlinders Medical Centre

Discussion

Member takes

Overview

Supports CV reactivity screening in Type A patients; confirms pattern as stable risk marker across challenges.

Key Points

This study investigates how different challenge levels affect cardiovascular responses in Type A and Type B individuals.
80 subjects classified as Type A or B were randomly assigned to high or low challenge conditions in cold pressor and reaction time tasks.
Cardiovascular responses were measured through systolic blood pressure and heart rate during the tasks.
Data was analyzed to compare responses between Type A and Type B individuals under varying challenge conditions.
Type A individuals exhibited greater systolic blood pressure and heart rate increases compared to Type B individuals.
Responses were notably more pronounced in Type A individuals under high challenge conditions.
The Rosenman diagnostic interview was more effective at predicting physiological responses than questionnaire methods.

Study Design

Type

RCT (n=80)

Randomization

Randomly assigned

Structured PICO

Does the level of environmental challenge affect systolic blood pressure and heart rate responses differently in Type A versus Type B subjects?

Population

80 Type A and B subjects randomly assigned to high or low challenge instructional conditions for cold pressor and choice reaction time tasks.

Intervention

High challenge instructional conditions for cold pressor (CP) and choice reaction time task (RT)

Comparator

Low challenge instructional conditions for cold pressor (CP) and choice reaction time task (RT)

Outcome

Magnitude of cardiovascular response (systolic blood pressure and heart rate elevation)surrogate

Type A behavior pattern, particularly high hostility/competitiveness, is associated with exaggerated cardiovascular reactivity to environmental challenges compared to Type B behavior.

Cite This Study

Dembroski et al. (1979) conducted an RCT in Type A coronary-prone behavior pattern (n=80). High challenge instructional condition vs. Low challenge instructional condition was evaluated on Systolic blood pressure (SBP) and heart rate (HR) elevation. Type A subjects exhibited greater systolic blood pressure and heart rate elevations than Type B subjects across both high and low challenge tasks.

synapsesocial.com/papers/6a2199dec2e34e33095fc0f2 https://doi.org/10.1111/j.1559-1816.1979.tb02707.x

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June 1, 1979Journal of Applied Social Psychology

Effect of Level of Challenge on Pressor and Heart Rate Responses in Type A and B Subjects1

View Full Paper

Ask AI

Bookmark

Key result

Type A subjects exhibited greater systolic blood pressure and heart rate elevations than Type B subjects across both high and low challenge tasks.

Why the study?

Does the level of environmental challenge affect systolic blood pressure and heart rate responses differently in Type A versus Type B subjects?

Population

Type A (coronary-prone) and Type B (noncoronary-prone) subjects (n=80)

Comparison

High challenge instructional conditions for cold… vs Low challenge instructional conditions for cold…

Design

RCT, Randomly assigned to either high or low challenge instructional conditions

Authors

TDThéodore M. DembroskiUniversity of Nebraska at Omaha JMJames M. MacDougallUniversity of California, Riverside JHJ. Alan HerdFlinders Medical Centre

Discussion

Member takes

Overview

Supports CV reactivity screening in Type A patients; confirms pattern as stable risk marker across challenges.

Key Points

This study investigates how different challenge levels affect cardiovascular responses in Type A and Type B individuals.
80 subjects classified as Type A or B were randomly assigned to high or low challenge conditions in cold pressor and reaction time tasks.
Cardiovascular responses were measured through systolic blood pressure and heart rate during the tasks.
Data was analyzed to compare responses between Type A and Type B individuals under varying challenge conditions.
Type A individuals exhibited greater systolic blood pressure and heart rate increases compared to Type B individuals.
Responses were notably more pronounced in Type A individuals under high challenge conditions.
The Rosenman diagnostic interview was more effective at predicting physiological responses than questionnaire methods.

Study Design

Type

RCT (n=80)

Randomization

Randomly assigned

Structured PICO

Does the level of environmental challenge affect systolic blood pressure and heart rate responses differently in Type A versus Type B subjects?

Population

80 Type A and B subjects randomly assigned to high or low challenge instructional conditions for cold pressor and choice reaction time tasks.

Intervention

High challenge instructional conditions for cold pressor (CP) and choice reaction time task (RT)

Comparator

Low challenge instructional conditions for cold pressor (CP) and choice reaction time task (RT)

Outcome

Magnitude of cardiovascular response (systolic blood pressure and heart rate elevation)surrogate

Type A behavior pattern, particularly high hostility/competitiveness, is associated with exaggerated cardiovascular reactivity to environmental challenges compared to Type B behavior.

Cite This Study

synapsesocial.com/papers/6a2199dec2e34e33095fc0f2 https://doi.org/10.1111/j.1559-1816.1979.tb02707.x

Also Consider

Synapse has enriched 5 closely related papers on similar clinical questions. Consider them for comparative context:

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