Key result
High levels of vigorous-intensity physical activity were associated with a significantly lower augmentation index (-2.6% vs 6.1%) compared to low levels in healthy young adults.
Why the study?
The study was conducted to demonstrate differences in cardiovascular and autonomic nerve function across physical activity levels and evaluate their associations.
Does higher physical activity level improve cardiovascular and autonomic nerve function in healthy young adults?
Cross-Sectional (n=66)
Does higher physical activity level improve cardiovascular and autonomic nerve function in healthy young adults?
Absolute Event Rate: -2.6% vs 6.1%
p-value: p=0.012
Higher levels of total and vigorous physical activity are associated with improved parasympathetic nerve activity and reduced arterial stiffness in healthy young adults.
PURPOSE: The purpose of this study was to demonstrate differences in cardiovascular and autonomic nerve function among physical activity levels and associations between physical activity level and cardiovascular and autonomic nerve function.METHODS: Sixty-six healthy young adults voluntarily participated in this cross-sectional study. Physical activity levels were assessed using triaxial accelerometers for 7 consecutive days. Central hemodynamics and arterial stiffness were measured using the Sphygomo-Cor Xcel system. Autonomic nerve function was assessed by heart rate variability.RESULTS: The highest tertile group of the total quantity of physical activity had higher lnRMSSD than did the lowest tertile group (p=0.047). The augmentation index adjusted for heart rate at 75 beats per min (AIx@75) was lower in the highest tertile group of vigorous-intensity physical activity than in the lowest tertile group (p=0.012). Moreover, AIx@75 was negatively associated with vigorousintensity physical activity (r=-0.27, p=0.028).CONCLUSIONS: High levels of physical activity contribute to the dominance of parasympathetic nerve activity at rest. Increased engagement in vigorous-intensity physical activity can help reduce arterial pulse wave reflection, an independent risk factor for cardiovascular diseases, even in healthy young adults.
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Kim et al. (2023) conducted a cross-sectional in Healthy (n=66). High vigorous-intensity physical activity vs. Low vigorous-intensity physical activity (lowest tertile) was evaluated on Augmentation index adjusted for heart rate at 75 beats per min (AIx@75) (p=0.012). High levels of vigorous-intensity physical activity were associated with a significantly lower augmentation index (-2.6% vs 6.1%) compared to low levels in healthy young adults.
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