Effects of Aerobic Fitness on Associations Between Physical activity and Blood Pressure in Young Adults

Document Type

Article

Publication Date

Spring 2024

Publication Title

International Journal of Exercise Science: Conference Proceedings

Abstract

BACKGROUND: Both aerobic fitness and physical activity levels are protective against cardiovascular diseases. The purpose of this study was to determine if the association between resting blood pressure and activity levels varied as a function of aerobic fitness status. METHODS: Forty healthy young men (n = 20, 24 ± 5 yrs, 27 ± 4 kg/m2) and women (n = 20, 22 ± 3 yrs, 26 ± 4 kg/m2) participated in the study. Physical activity was quantified via wrist actigraphy for seven consecutive days. Relative proportions of sedentary time, low intensity physical activity (LPA), and moderate-to-vigorous intensity physical activity (MVPA) were recorded for analysis. Following the observation period, resting systolic and diastolic blood pressures were obtained in the laboratory in accordance with standardized procedures. Subsequently, peak oxygen uptake was obtained via a graded maximal exercise test on a cycle ergometer. Participants were then categorized as “low fit” or “high fit" based on median split. An equal number of men and women comprised each group. RESULTS: Maximal oxygen uptake was higher in the high fit (38.8 ± 7.2 ml∙kg∙min-1) versus low fit (29.9 ± 6.6 ml∙kg∙min-1) group (P0.05) were observed between groups for sedentary time (62 ± 8 vs. 66 ± 9%), LPA (9 ± 1 vs. 9 ± 1%), or MVPA (12 ± 2 vs. 11 ± 2%). Moreover, systolic blood pressure was associated with sedentary time (r = 0.45, P

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Georgia Southern University faculty members, Gregory Grosicki and Andrew Flatt co-authored Effects of Aerobic Fitness on Associations Between Physical activity and Blood Pressure in Young Adults.

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