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Definition: "An ergogenic aid is any substance or phenomenon that enhances performance "
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11.01.2011 |
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Fish oil boosts muscle growth in elderly
Give elderly people 4 g of a pharmaceutical fish oil preparation every day for 8 weeks and their muscle tissue grows faster, if their blood contains high levels of glucose and amino acids. Researchers at Washington University write about this in a study that will appear soon in the American Journal of Clinical Nutrition.
Study
The elderly subjects were given a daily dose of Lovaza that was equivalent to 1.86 g EPA and 1.5 g DHA.
A similar-sized group of over 65 year olds was given a placebo containing corn oil.
Before and after the supplementation, the researchers measured the synthesis of muscle protein in the subjects' muscle fibre [the muscle protein fractional synthesis rate, FSR]. On one occasion they measured the FSR in muscle cells that had been taken while the subjects had an empty stomach [basal]; on another occasion the researchers did the same, but when the subjects' blood had high levels of glucose and amino acid [clamp].
Results
Fish fatty acid supplementation boosted the activity of the anabolic signalling molecules mTOR and p70s6k in the muscle cells. So the fish fatty acids made the elderly people's anabolic machinery work harder.
Conclusion
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