Effects of FPH ingestion on postexercise aminoacidemia compared with WPH

[madman]

Effects of fish protein hydrolysate ingestion on postexercise aminoacidemia compared with whey protein hydrolysate in young individuals

Abstract: The aminoacidemia resulting from food protein digestion in response to exercise plays an underlying role in the rate of muscle protein synthesis. Whey protein hydrolysate (WPH) has been demonstrated to cause more pronounced postexercise aminoacidemia compared with casein and soy. Although fish protein has been demonstrated to be a great source of amino acids, there is no data available providing information about the postexercise aminoacidemia after fish protein hydrolysate (FPH) intake. The present study investigated the characteristic patterns of postexercise aminoacidemia after WPH and FPH intake in nine physically active subjects (six males and three females). In a crossover, double-blind, and randomized design, all participants received oral doses of either 0.25 g/kg of FPH or WPH or placebo (PLA) immediately after a resistance exercise bout. Blood samples were taken before and at 30, 60, 90, 120 and 180 min after supplementation. There was a significant increase in plasma total amino acids (TAA), essential amino acids (EAA), branched-chain amino acids (BCAA), and leucine concentrations at 30 and 60 min after FPH supplementation, and at 30, 60, 90, and 120 min after WPH as compared to PLA. No significant differences were observed in plasma TAA, EAA, BCAA, and leucine concentrations between FPH and WPH at any time point, and there were no significant difference observed in the area under the curve for TAA, EAA, BCAA, and leucine between FPH and WPH. In conclusion, both FPH and WPH showed a rapid and pronounced postexercise aminoacidemia. FPH presented itself to be an alternative food source of rapidly digested proteins to be used after resistance exercise.




5. Conclusions

In conclusion, both fish protein and whey protein supplements have been shown to deliver rapid and pronounced postexercise aminoacidemia. FPH can be considered a valuable and alternative food source of rapidly digested proteins to be used after resistance exercise to provide an anabolic advantage that may lead to greater muscle hypertrophy.

 

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Table 1–Proximate composition of the FPH and WPH supplement.

 

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Table 2–Amino acid profile of the fish protein hydrolysate (FPH) and whey protein hydrolysate (WPH).

 

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Figure 1–Experimental design of the study.

 

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Figure 2–Plasma TAA concentrations (A) and total area under the curve (AUCt) (B) during the 180 min post supplementation period.

Figure 3–Plasma EAA concentrations (A) and total area under the curve (AUCt) (B) during the 180 min post supplementation period.

 

[madman]

Figure 4–Plasma BCAA concentrations (A) and total area under the curve (AUCt) (B) during the 180 min post supplementation period.

Figure 5–Plasma leucine concentrations (A) and total area under the curve (AUCt)(B) during the 180 min post supplementation period.

 

[madman]

Figure 6–Individual average variation TAA total area under the curve (AUCt) for PLA versus FPH versus WPH (A); individual average variation EAA AUCt for PLA versus FPH versus WPH (B); individual average variation BCAA AUCt for PLA versus FPH versus WPH (C); individual average variation leucine AUCt for PLA versus FPH versus WPH (D).