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Updated: Jul 11, 2026

Autonomic Function Following Concussion in Youth Athletes: An Exploration of Heart Rate Variability Using 24-hour Recording Methodology

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Alpha-linolenic acid and heart rate variability.

J H Christensen¹, M S Christensen, E Toft

¹Department of Nephrology, Aalborg Hospital, Denmark.

Nutrition, Metabolism, and Cardiovascular Diseases : NMCD

|August 5, 2000

Summary

Alpha-linolenic acid, found in plants, did not show antiarrhythmic effects in cell membranes. Heart rate variability (HRV) analysis revealed no correlation, suggesting it may not directly prevent arrhythmias.

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Area of Science:

Cardiology
Nutritional Science
Biochemistry

Background:

Marine omega-3 fatty acids exhibit antiarrhythmic properties.
Alpha-linolenic acid (ALA), a plant-derived omega-3 fatty acid, is hypothesized to possess similar effects.

Purpose of the Study:

To investigate the association between alpha-linolenic acid levels in cell membranes and the risk of malignant arrhythmias.
To assess this relationship using heart rate variability (HRV) as a measure of cardiac autonomic function.

Main Methods:

Cell membrane ALA content was quantified using gas chromatography.
24-hour HRV was measured in patients at high risk for sudden cardiac death and healthy volunteers.

Main Results:

No significant correlation was observed between alpha-linolenic acid levels and 24-hour HRV.
The study did not find evidence supporting a direct antiarrhythmic role for ALA.

Conclusions:

Alpha-linolenic acid alone does not appear to have an antiarrhythmic effect.
The antiarrhythmic benefits of omega-3 fatty acids might stem from their conversion to longer-chain polyunsaturated fatty acids (PUFAs) found in fish oil.