The purpose of this study was to evaluate the role of omega-3 supplementation on fatigue and neuromuscular activation patterns of the lower extremity during a drop vertical jump (DVJ) and cutting maneuver. Seventeen female soccer players were allocated to a placebo (n=7) or omega-3 (n=10) (2.4g/day) group and were assessed before and after an 8-week period. EMG of the vastus lateralis (VL) and biceps femoris (BF) was evaluated during a DVJ and cutting maneuver prior to, and immediately following, a sport specific fatigue protocol. A 2x4 RM ANOVA revealed statistically significant (p≤0.05) increases in VL activation 100ms before initial contact (IC) during each movement assessed, and 50ms before IC during the DVJ on both limbs in the placebo group following the intervention. A significant increase in VL activation in the non-fatigued state 50ms before IC was reported in the omega-3 group during the DVJ on the dominant limb, following the intervention. Subtle changes in group means, in the fatigued cutting maneuver on the non-dominant limb, indicate a potentially beneficial adaptation in percent activation (Pre: 31±5% Post: 42±12%) and rate of activation (Pre: 106±60ms, post 30±10ms) for BF activity during weight acceptance in the omega-3 group. In conclusion, omega-3 supplementation increased activation of the VL 50ms before IC during the DVJ on the non-dominant limb in the fatigued state, post-intervention; but had no further statistically significant impact on muscle activity or rate of activation, following the 8-week period.
New Investigator Award
Leisz, Sydney; Sorbie, Graeme; Babraj, John; and Williams, Ashley
"OMEGA-3 SUPPLEMENTATION ON MUSCLE ACTIVATION PATTERNS OF THE KNEE DURING HIGH-RISK MOVEMENTS FOR ACL RUPTURES,"
ISBS Proceedings Archive: Vol. 40:
1, Article 90.
Available at: https://commons.nmu.edu/isbs/vol40/iss1/90