Grape Seed Extract speeds up damaged muscle tissue recovery

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    Grape Seed Extract speeds up damaged muscle tissue recovery

    Grape Seed Extract speeds up damaged muscle tissue recovery

    If you're black and blue after a mountain bike fall or have taken a beating during training, your sore muscles will probably recover faster if you take a grape seed extract supplement. We base this suggestion on the results of an animal study that researchers at Stellenbosch University in South Africa published in Medicine & Science in Sports & Exercise.

    If you're black and blue after a mountain bike fall or have taken a beating during training, your sore muscles will probably recover faster if you take a grape seed extract supplement. We base this suggestion on the results of an animal study that researchers at Stellenbosch University in South Africa published in Medicine & Science in Sports & Exercise.

    Muscle, inflammation & grape seed extract
    Muscle tissue damage – as a result of heavy training or from taking blows or a fall – results in inflammatory reactions in the body. Plant-based compounds such as proanthocyanidolic oligomers in grape seed extract inhibit inflammation.

    Extrapolation: plant-based compounds such as proanthocyanidolic oligomers speed up the recovery of damaged muscles.

    Study
    Nice theory, but does it work in practice? This is the question the South Africans set out to answer by doing an experiment in which they anaesthetised male rats and then caused muscle bruising by dropping a weight on their hind legs. For a period of 14 days they gave one group of rats a placebo every day [Pl-PLA] and another group 20 mg grape seed extract per kg bodyweight daily [Pl-PCO].

    The researchers used Oxiprovin, a grape seed extract made by the South African company Brenn-O-Kem, which consists of 45 percent proanthocyanidolic oligomers. The human equivalent of the dose they used would be 140 mg per kg per day. The supplement was given orally.

    Results
    In the rats that had been given grape seed extract there was a faster decrease in the amount of inflammatory proteins such as IL-1-beta and TNF-alpha in their blood.

    The grape seed extract boosted the production of foetal myosin heavy chain in the damage muscle tissue. Foetal myosin heavy chain is an indicator of muscle fibre recovery.

    The figure above shows how grape seed extract speeds up muscle recovery. Macrophages, immune cells that clear up damaged cells that are beyond repair and then produce signalling substances to kick-start tissue regeneration, entered the muscle tissue more easily in animals that had been given grape seed extract.

    Muscle recovery?
    According to fundamental research, macrophages also play a key role in anabolic processes after unusual physical exertion. Could athletes recover from their intensive workouts faster if they use grape seed extract? You can read that here.

    Source: Med Sci Sports Exerc. 2012 May;44(5):872-80.
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