In a double-blind, parallel randomized clinical trial with 38 cyclists in whom the performance improvement was determined after the consumption of docosahexaenoic acid for one month.

Inclusion Criteria:

• Male between 18 and 75 years old.
• Cyclists who train three or four times a week.

Exclusion Criteria:

• Suffering some type of chronic disease.
• Consume habitually pharmacological treatments that could influence the physiological or biochemical responses to be analyzed in the present work.
• Consumption in the month prior to the start of the study, or during the performance of the same, functional food enriched with omega-3 fatty acids.
• To present during the performance of the stress tests, any of the absolute or relative contraindications dictated by the American College of Sports Medicine (ACSM, 1999) 15 would be duly informed and excluded from the present study.