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Parental hypertension, affect, and cardiovascular response to cognitive challenge
Insights
Offspring of parents with hypertension exhibit greater cardiovascular responses, like elevated heart rate (HR) and diastolic blood pressure (DBP), during stressful cognitive tasks. This heightened cardiovascular reactivity is linked to their affective state, particularly anxiety.
Area of Science:
- Cardiovascular Physiology
- Behavioral Medicine
- Genetics of Hypertension
Background:
- Hypertension has a significant genetic component, with parental history being a key risk factor.
- Understanding cardiovascular and affective responses in at-risk individuals is crucial for early detection and prevention strategies.
- Previous research suggests a link between stress, cardiovascular reactivity, and hypertension development.
Purpose of the Study:
- To investigate the cardiovascular and affective reactions of normotensive offspring of hypertensive parents compared to offspring of normotensive parents.
- To determine if familial risk for hypertension is associated with altered physiological responses during a frustrating cognitive task.
- To explore the interplay between cardiovascular reactivity, anxiety, and anger in individuals with a parental history of hypertension.
Main Methods:
- Recruited 44 normotensive male undergraduate volunteers, divided into groups based on parental history of hypertension (n=22) or normotension (n=22).
- Measured heart rate (HR), systolic blood pressure (SBP), and diastolic blood pressure (DBP) at rest and during a 3-minute mental arithmetic task.
- Administered State-Trait Anxiety and Anger Inventories before and after the task to assess affective responses.
Main Results:
- Offspring of hypertensives demonstrated significantly greater elevations in HR and DBP during the mental arithmetic task compared to offspring of normotensives.
- No significant differences were observed in task performance or changes in anxiety and anger states between the two groups.
- A significant difference in HR reactivity between the groups emerged only in individuals reporting high levels of anxiety and, to a lesser extent, anger during the task.
Conclusions:
- Individuals with a familial predisposition to hypertension may possess an underlying heightened cardiovascular response potential.
- This heightened cardiovascular reactivity appears to be modulated by concurrent affective experiences, such as anxiety and anger.
- Findings suggest that affective state plays a role in the expression of cardiovascular risk in individuals with a family history of hypertension.
Abstract:
This investigation examined the cardiovascular and affective reactions of offspring of hypertensive and normotensive parents on exposure of subjects to a frustrating cognitive task. Subjects were 44 normotensive, male undergraduate volunteers, 22 with and 22 without a parental history of hypertension. Heart rate (HR) and systolic and diastolic blood pressure (SBP, DBP) measurements were recorded under resting (baseline) conditions and during subjects' performance of a 3-min mental arithmetic task. Subjects were also administered state forms of the State-Trait Anxiety and Anger Inventories following baseline measurements and immediately after the experimental task. Results indicated that relative to sons of normotensive parents, offspring of hypertensives showed significantly greater HR and DBP elevations during mental arithmetic. However, neither task performance nor task-related changes on the state measures of anxiety and anger varied reliably with differences in parental status. When subjects were divided into groups of high- and low-affect (i.e., anxiety, anger) responders, the HR reactions of persons having hypertensive and normotensive parents were found to differ significantly only among subjects who reported experiencing the most appreciable anxiety--and to a lesser extent, anger--when performing the mental arithmetic task. This finding suggests that persons at familial risk for hypertension possess a heightened cardiovascular response "potential" which is expressed, in part, in relation to concomitant affective experiences of the individual.