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Articles related to focusing on healthy aging, prevention, mobility, cognition, nutrition, independence, and caregiving support.

5 min

Do chronotropic effects change with age?

Intrinsic heart rate, the natural pacemaker rhythm of the heart, decreases by approximately 0.5 to 0.7 beats per minute per year, starting in early adulthood. This means that, yes, **do chronotropic effects change with age**, with significant impacts on the heart's function and exercise capacity, even in healthy individuals. The changes are primarily driven by shifts in the autonomic nervous system and alterations within the heart's pacemaker cells.

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4 min

Why does MHR decrease with age? Exploring the biological reasons

A progressive decline in maximum heart rate (MHR) is a fundamental, and generally unavoidable, aspect of aging for both humans and other mammals. It is not a sign of poor fitness, but rather a result of natural physiological changes within the heart's electrical system, structural components, and hormonal responses. This article explores the biological reasons behind why MHR decreases with age, affecting everyone regardless of lifestyle or physical conditioning.

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