» Articles » PMID: 35429292

The Impact of Age, Sex, Cardio-respiratory Fitness, and Cardiovascular Disease Risk on Dynamic Cerebral Autoregulation and Baroreflex Sensitivity

Abstract

Background: Humans display an age-related decline in cerebral blood flow and increase in blood pressure (BP), but changes in the underlying control mechanisms across the lifespan are less well understood. We aimed to; (1) examine the impact of age, sex, cardiovascular disease (CVD) risk, and cardio-respiratory fitness on dynamic cerebral autoregulation and cardiac baroreflex sensitivity, and (2) explore the relationships between dynamic cerebral autoregulation (dCA) and cardiac baroreflex sensitivity (cBRS).

Methods: 206 participants aged 18-70 years were stratified into age categories. Cerebral blood flow velocity was measured using transcranial Doppler ultrasound. Repeated squat-stand manoeuvres were performed (0.10 Hz), and transfer function analysis was used to assess dCA and cBRS. Multivariable linear regression was used to examine the influence of age, sex, CVD risk, and cardio-respiratory fitness on dCA and cBRS. Linear models determined the relationship between dCA and cBRS.

Results: Age, sex, CVD risk, and cardio-respiratory fitness did not impact dCA normalised gain, phase, or coherence with minimal change in all models (P > 0.05). cBRS gain was attenuated with age when adjusted for sex and CVD risk (young-older; β = - 2.86 P < 0.001) along with cBRS phase (young-older; β = - 0.44, P < 0.001). There was no correlation between dCA normalised gain and phase with either parameter of cBRS.

Conclusion: Ageing was associated with a decreased cBRS, but dCA appears to remain unchanged. Additionally, our data suggest that sex, CVD risk, and cardio-respiratory fitness have little effect.

Citing Articles

A systematic review, meta-analysis meta-regression amalgamating the driven approaches used quantify dynamic cerebral autoregulation.

Burma J, Roy M, Kennedy C, Labrecque L, Brassard P, Smirl J J Cereb Blood Flow Metab. 2024; 44(8):1271-1297.

PMID: 38635887 PMC: 11342731. DOI: 10.1177/0271678X241235878.


Curvilinear association between waist-to-height ratio and cardiorespiratory fitness: a cross-sectional study based on nationwide data from Chinese children and adolescents.

Dong J, Song P, Zhang Z, Zhang J BMC Sports Sci Med Rehabil. 2024; 16(1):73.

PMID: 38549101 PMC: 10976784. DOI: 10.1186/s13102-024-00868-8.


Cerebrovascular CO reactivity and dynamic cerebral autoregulation through the eighth decade of life and their implications for cognitive decline.

Weijs R, Oudegeest-Sander M, Hopman M, Thijssen D, Claassen J J Cereb Blood Flow Metab. 2023; 44(5):712-725.

PMID: 38064286 PMC: 11197147. DOI: 10.1177/0271678X231219568.


A decade of aging in healthy older adults: longitudinal findings on cerebrovascular and cognitive health.

Weijs R, Oudegeest-Sander M, Vloet J, Hopman M, Claassen J, Thijssen D Geroscience. 2023; 45(4):2629-2641.

PMID: 37052769 PMC: 10651595. DOI: 10.1007/s11357-023-00790-w.


Influence of high-intensity interval training to exhaustion on the directional sensitivity of the cerebral pressure-flow relationship in young endurance-trained men.

Abbariki F, Roy M, Labrecque L, Drapeau A, Imhoff S, Smirl J Physiol Rep. 2022; 10(13):e15384.

PMID: 35822439 PMC: 9277516. DOI: 10.14814/phy2.15384.

References
1.
Dineen N, Panerai R, Brodie F, Robinson T . Effects of ageing on cerebral haemodynamics assessed during respiratory manoeuvres. Age Ageing. 2011; 40(2):199-204. DOI: 10.1093/ageing/afq170. View

2.
Madden K, Lockhart C, Potter T, Cuff D . Aerobic training restores arterial baroreflex sensitivity in older adults with type 2 diabetes, hypertension, and hypercholesterolemia. Clin J Sport Med. 2010; 20(4):312-7. PMC: 3742433. DOI: 10.1097/JSM.0b013e3181ea8454. View

3.
Okada Y, Galbreath M, Shibata S, Jarvis S, VanGundy T, Meier R . Relationship between sympathetic baroreflex sensitivity and arterial stiffness in elderly men and women. Hypertension. 2011; 59(1):98-104. PMC: 3241909. DOI: 10.1161/HYPERTENSIONAHA.111.176560. View

4.
Yam A, Lang E, Lagopoulos J, Yip K, Griffith J, Mudaliar Y . Cerebral autoregulation and ageing. J Clin Neurosci. 2005; 12(6):643-6. DOI: 10.1016/j.jocn.2004.08.017. View

5.
Smirl J, Haykowsky M, Nelson M, Tzeng Y, Marsden K, Jones H . Relationship between cerebral blood flow and blood pressure in long-term heart transplant recipients. Hypertension. 2014; 64(6):1314-20. DOI: 10.1161/HYPERTENSIONAHA.114.04236. View