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Exercise and Cardiovascular Response01:20

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Exercise significantly impacts cardiovascular response, which is crucial for understanding patient health and designing effective treatment plans.
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Regular physical activity is essential for maintaining cardiovascular health, with aerobic exercises being particularly effective. According to the American Heart Association, 150 minutes of moderate to intense aerobic exercise per week is recommended for a healthy heart. Aerobic activities may include brisk walking, running, bicycling, cross-country skiing, and swimming, ideally performed three to five times per week.
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Several body functions deteriorate with age. The external signs of aging are easily identifiable. For example, the skin becomes dry, less elastic, and thins out, forming wrinkles. The skin of the face begins to appear looser due to a decrease in the levels of elastic and collagen fibers in the connective tissue. Additionally, melanin production in the hair follicle decreases with age, resulting in gray hair. Moreover, the senses of sight and hearing decline, so glasses and hearing aids may...
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Typical heart performance is influenced by heart rate, rhythm, myocardial contraction, and metabolism or blood flow. The cardiac muscle exhibits distinct electrophysiological features, including pacemaker activity and calcium channel control, which play a vital role in the heart's response to various drugs. The autonomic nervous system, comprising the sympathetic and parasympathetic branches, regulates heart rate. Sympathetic activation increases heart rate, while parasympathetic activation...
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Age-related pharmacokinetic changes are extensively documented, but understanding age-related pharmacodynamic alterations is relatively limited. This knowledge gap can be partly attributed to the complexity of developing appropriate measures of drug responses compared to bioanalytical methods for determining drug concentrations.Most information regarding age-related differences in human pharmacodynamics originates from cross-sectional studies. However, these studies assume that observed mean...
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Exercise induces a range of adaptations in muscle tissue, depending on the type and duration of activity. Such physical training can be broadly categorized into two types: endurance exercises and resistance exercises.
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Updated: Nov 25, 2025

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Exercise-mitigated sex-based differences in aging: from genetic alterations to heart performance.

Denise Börzsei1, Dániel Priksz2, Renáta Szabó1,3

  • 1Department of Physiology, Anatomy and Neuroscience, Faculty of Science and Informatics, University of Szeged, Szeged, Hungary.

American Journal of Physiology. Heart and Circulatory Physiology
|December 18, 2020
PubMed
Summary

Voluntary exercise improves heart function in aged rats, with greater benefits observed in males. Exercise alters gene expression, including increased Pcp4 and decreased Comt and Ogn, enhancing cardiac performance and reducing infarct size.

Keywords:
Pcp4agingechocardiographyexercisegene expression

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Area of Science:

  • Cardiovascular Physiology
  • Exercise Science
  • Molecular Biology

Background:

  • Cardiovascular diseases prevalence increases with age, necessitating strategies to maintain heart function.
  • Understanding exercise-induced cardioprotective effects in aging is crucial for developing interventions.
  • Age and sex significantly influence cardiovascular health and response to stimuli.

Purpose of the Study:

  • To investigate the cardioprotective effects of voluntary exercise in aged male and female rats.
  • To analyze exercise-induced genetic and protein expression changes in the heart.
  • To assess the impact of exercise on heart performance and infarct size in aged rats.

Main Methods:

  • Aged male and female Wistar rats were divided into control and voluntary running groups for 12 weeks.
  • Echocardiography assessed heart function; hearts were analyzed for gene/protein expression (Comt, Esm1, Pcp4, Ogn) and infarct size.
  • Langendorff-perfusion system used to detect infarct size after induced coronary artery occlusion.

Main Results:

  • Voluntary exercise improved cardiac function, with more pronounced effects in males.
  • Exercise altered gene expression: increased Pcp4 (calcium regulation) and Esm1, decreased Comt and Ogn in aged males.
  • Exercise significantly reduced infarct size and improved diastolic function, linked to Pcp4 gene and protein enhancement.

Conclusions:

  • Voluntary exercise is an effective therapeutic tool for improving cardiac function in aged rats, showing sex-dependent effects.
  • Long-term exercise modulates key cardiovascular gene expression (Comt, Ogn, Pcp4, Esm1), contributing to functional adaptation.
  • Exercise-induced genetic alterations are fundamental to improving cardiac performance and resilience in aging.