scholarly journals Effect of timing of whey protein supplement on muscle damage markers after eccentric exercise

2017 ◽  
Vol 13 (4) ◽  
pp. 436-440 ◽  
Author(s):  
Jooyoung Kim ◽  
Chulhyun Lee ◽  
Joohyung Lee
2014 ◽  
Vol 34 (1) ◽  
pp. 19-24 ◽  
Author(s):  
P.C.B. Lollo ◽  
J. Amaya-Farfan ◽  
I.C. Faria ◽  
J.V.V. Salgado ◽  
M.P.T. Chacon-Mikahil ◽  
...  

Nutrients ◽  
2020 ◽  
Vol 12 (8) ◽  
pp. 2382
Author(s):  
David C. Nieman ◽  
Kevin A. Zwetsloot ◽  
Andrew J. Simonson ◽  
Andrew T. Hoyle ◽  
Xintang Wang ◽  
...  

This randomized trial compared pea protein, whey protein, and water-only supplementation on muscle damage, inflammation, delayed onset of muscle soreness (DOMS), and physical fitness test performance during a 5-day period after a 90-min eccentric exercise bout in non-athletic non-obese males (n = 92, ages 18–55 years). The two protein sources (0.9 g protein/kg divided into three doses/day) were administered under double blind procedures. The eccentric exercise protocol induced significant muscle damage and soreness, and reduced bench press and 30-s Wingate performance. Whey protein supplementation significantly attenuated post-exercise blood levels for biomarkers of muscle damage compared to water-only, with large effect sizes for creatine kinase and myoglobin during the fourth and fifth days of recovery (Cohen’s d > 0.80); pea protein versus water supplementation had an intermediate non-significant effect (Cohen’s d < 0.50); and no significant differences between whey and pea protein were found. Whey and pea protein compared to water supplementation had no significant effects on post-exercise DOMS and the fitness tests. In conclusion, high intake of whey protein for 5 days after intensive eccentric exercise mitigated the efflux of muscle damage biomarkers, with the intake of pea protein having an intermediate effect.


Author(s):  
David C. Nieman ◽  
Kevin A. Zwetsloot ◽  
Andrew J. Simonson ◽  
Andrew T. Hoyle ◽  
Xintang Wang ◽  
...  

This randomized trial compared pea protein, whey protein, and water-only supplementation on muscle damage, inflammation, delayed onset of muscle soreness (DOMS), and physical fitness test performance during a 5-day period after a 90-minute eccentric exercise bout in non-athletic, non-obese males (n=92, ages 18-55 years). The two protein sources (0.9 g protein/kg divided into three doses/day) were administered under double blind procedures. The eccentric exercise protocol induced significant muscle damage and soreness, and reduced bench press and 30-second Wingate performance. Whey protein supplementation significantly attenuated post-exercise blood levels for biomarkers of muscle damage compared to water-only, with large effect sizes for creatine kinase and myoglobin during the 4th and 5th days of recovery (Cohen's d &amp;gt;0.80); pea protein versus water supplementation had an intermediate, non-significant effect (Cohen's d &amp;lt;0.50); and no significant differences between whey and pea protein were found. Whey and pea protein compared to water supplementation had no significant effects on post-exercise DOMS and the fitness tests. In conclusion, high intake of whey protein for 5 days after intensive eccentric exercise mitigated efflux of muscle damage biomarkers, with intake of pea protein having an intermediate effect in part due to the 24% lower leucine amino acid content.


2015 ◽  
Vol 5 (1) ◽  
pp. 34 ◽  
Author(s):  
Dale M.J ◽  
Thomson R.L ◽  
Coates A.M ◽  
Howe P.R.C ◽  
Brown A ◽  
...  

Background: A whey protein hydrolysate (NatraBoost XR; WPHNB) has been shown to speed repair muscle damage. We sought to determine whether this benefit is specific to this hydrolysate to evaluate a marker for quality control.Methods: Three hydrolysates of the same whey protein isolate (WPI) were prepared (WPHNB, WPH1 and WPH2). Isometric knee extensor strength was measured in 39 sedentary male participants before and after 100 maximal eccentric contractions of the knee extensors to induce muscle damage. Participants were then randomised to consume 250 ml of flavoured water (FW, n=9), or 250 ml of FW containing 25 g of either NatraBoost XR (n=3), WPH1 (n=9), WPH2 (n=9) or WPI (n=9). Strength was reassessed over the next seven days while the supplements were consumed daily. Fibroblasts were cultured for 48 hr in the presence of the different hydrolysates, WPI, saline or fetal bovine serum to ascertain effects on cell proliferation.Results: Strength was reduced in all treatment groups after eccentric exercise (P<0.001). Strength recovered steadily over 7 days in the FW, WPI, WPH1 and WPH2 treatment groups (P<0.001), with no difference between treatments (P=0.87). WPHNB promoted faster strength recovery compared with the other treatments (P<0.001). Fibroblast proliferation was greater with WPHNB compared with saline, WPI or the other hydrolysates (P<0.001).Conclusions: Promoting recovery from muscle damage seems unique to WPHNB. In vitro fibroblast proliferation may be a useful marker for quality control. It is not clear whether effects on fibroblast proliferation contribute to the in vivo effect of WPHNB on muscle damage.Keywords: tissue repair, fibroblast proliferation, strength recovery, whey protein


2007 ◽  
Vol 39 (Supplement) ◽  
pp. S61
Author(s):  
Mary P. Miles ◽  
Jan M. Andring ◽  
Sherri D. Pearson ◽  
Jessy R. Kidd

2010 ◽  
Vol 110 (4) ◽  
pp. 789-796 ◽  
Author(s):  
Bruno Manfredini Baroni ◽  
Ernesto Cesar Pinto Leal Junior ◽  
Thiago De Marchi ◽  
André Luiz Lopes ◽  
Mirian Salvador ◽  
...  

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