Continuous protein supplementation reduces acute exercise-induced stress markers in athletes performing marathon

Röhling, Martin, McCarthy, H. David and Berg, Aloys (2021) Continuous protein supplementation reduces acute exercise-induced stress markers in athletes performing marathon. Nutrients, 13 (9). pp. 1-10. ISSN 2072-6643

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Official URL: https://doi.org/10.3390/nu13092929

Abstract / Description

The aim of this study was to determine the changes in endurance performance and metabolic, hormonal, and inflammatory markers induced by endurance stress (marathon race) in a combined strategy of training and dietary protein supplementation. The study was designed as a randomised controlled trial consisting of regular endurance training without and with a daily intake of a soy protein-based supplement over a three-month period in 2 × 15 (10 males and 5 females per group) endurance-trained adults. Body composition (body mass, BMI, and fat mass) was determined, and physical fitness was measured by treadmill ergometry at baseline and after 3 months of intervention; changes in exercise-induced stress and inflammatory markers (CK, myoglobin, interleukin-6, cortisol, and leukocytes) were also determined before and after a marathon competition; eating behaviour was documented before and after intervention by a three-day diet diary. Although no significant influence on endurance performance was observed, the protein supplementation regime reduced the exercise-induced muscle stress response. Furthermore, a protein intake of ≥20% of total energy intake led to a lower-level stress reaction after the marathon race. In conclusion, supplementary protein intake may influence exercise-induced muscle stress reactions by changing cellular metabolism and inflammatory pathways.

Item Type: Article
Additional Information: ** From MDPI via Jisc Publications Router
Uncontrolled Keywords: protein-rich diet, endurance exercise, muscle stress, inflammation
Subjects: 600 Technology > 610 Medicine & health
Department: School of Human Sciences
SWORD Depositor: Pub Router
Depositing User: Pub Router
Date Deposited: 01 Sep 2021 14:51
Last Modified: 01 Sep 2021 14:51
URI: http://repository.londonmet.ac.uk/id/eprint/6932

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