Parental hypertension, affect, and cardiovascular response to cognitive challenge

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.