Please use this identifier to cite or link to this item: http://hdl.handle.net/1893/25395
Appears in Collections:Faculty of Health Sciences and Sport Journal Articles
Peer Review Status: Refereed
Title: n-3 Fatty Acid Supplementation During 4 Weeks of Training Leads to Improved Anaerobic Endurance Capacity, But Not Maximal Strength, Speed, or Power in Soccer Players
Authors: Gravina, Leyre
Brown, Frankie F
Alexander, Lee
Dick, James R
Bell, J Gordon
Witard, Oliver
Galloway, S D
Contact Email: s.d.r.galloway@stir.ac.uk
Keywords: Fish oils
adaptation
exercise
lipids
Issue Date: Apr-2017
Citation: Gravina L, Brown FF, Alexander L, Dick JR, Bell JG, Witard O & Galloway SD (2017) n-3 Fatty Acid Supplementation During 4 Weeks of Training Leads to Improved Anaerobic Endurance Capacity, But Not Maximal Strength, Speed, or Power in Soccer Players, International Journal of Sport Nutrition and Exercise Metabolism, 27 (4), pp. 305-313.
Abstract: Omega-3 fatty acid (n-3 FA) supplementation could promote adaptation to soccer-specific training. We examined the impact of a 4 wk period of n-3 FA supplementation during training on adaptations in 1RM knee extensor strength, 20m sprint speed, vertical jump power, and anaerobic endurance capacity (Yo-Yo test) in competitive soccer players. Twenty six soccer players were randomly assigned to one of two groups: n-3 FA supplementation (n-3 FA; n=13) or placebo (n=13). Both groups performed two experimental trial days. Assessments of physical function and respiratory function were conducted pre (PRE) and post (POST) supplementation. Training session intensity, competitive games and nutritional intake were monitored during the 4 wk period. No differences were observed in respiratory measurements (FEV1, FVC) between groups. No main effect of treatment was observed for 1RM knee extensor strength, explosive leg power, or 20 m sprint performance, but strength improved as a result of the training period in both groups (p<0.05). Yo-Yo test distance improved with training in the n-3 FA group only (p<0.01). The mean difference (95% CI) in Yo-Yo test distance completed from PRE to POST was 203 (66 to 340) m for n-3 FA, and 62 (-94 to 217) m for placebo, with a moderate effect size (Cohen's d of 0.52). We conclude that 4 wk of n-3 FA supplementation does not improve strength, power or speed assessments in competitive soccer players. However, the increase in anaerobic endurance capacity evident only in the n-3 FA treatment group suggests an interaction that requires further study.
DOI Link: http://dx.doi.org/10.1123/ijsnem.2016-0325
Rights: This article will be published in a forthcoming issue of the International Journal of Sport Nutrition and Exercise Metabolism. This article appears here in its accepted, peer-reviewed form; it has not been copyedited, proofed, or formatted by the publisher.

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