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Effects of whey protein supplementation after high intensity eccentric contraction on liver enzymes in non athletic young men
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Mojtaba Eizadi   , Mojtaba Ghasemi Shob , Mohammad Rashidi |
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Abstract: (22357 Views) |
| Regarding high antioxidant property of whey protein, the role of its supplementation on liver and muscle damages after intense muscle contraction is not well understood. Relatively, this study aimed to determine the effect of a whey protein supplementation after intense muscle contraction on some liver enzymes in non-trained men.
Materials and Methods: Thirty non-trained young men (78 ± 12 kg) were divided into 2 groups: glutamine supplementation (3 days/ 0.4 g per kg of body weight, n = 15) and placebo (n = 15) groups by randomly. Subjects performed an exercise test consist of intense eccentric contraction (up and down stairs). Blood samples were obtained before and 0, 24, 48 and 75 hours after exercise for measure aspartate transaminase (AST) and alanine transaminase (ALT). Supplementation was performed at first day (after exercise test) and repeated at the second and third days.
Results: A significant increase was observed in AST and ALT after exercise when compared with pretest in two groups (p < 0.05). Based on analysis of variance data, the change pattern of AST at 24, 48 and 72 recovery after exercise did not change by whey protein supplementation compared to placebo (ρ > 0.05) but ALT activity was significantly lower in each stages of whey protein than placebo group(p < 0.05). .
Conclusion: Despite no change in AST, but with emphasis on reducing the AST in response to whey protein supplementation after exercise test, it is concluded that whey protein supplementation after intense eccentric contractions lead to reduce liver damage in non-athletes young male |
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| Keywords: Whey Proteins, Dietary Supplements, Muscle Contraction, Enzymes, Liver |
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Full-Text [PDF 773 kb]
(1122 Downloads)
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Type of Study: Research |
Subject:
General
Received: 2016/12/6 | Accepted: 2017/09/16 | Published: 2018/01/1
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