HVN1943 Metadata Record - Effect of collagen hydrolysate on muscle recovery
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Description: Common after strenuous and unaccustomed exercise, exercise induced muscle damage (EIMD) typically results in soreness, inflammation, collagen breakdown and alterations in muscle function; these symptoms can impact sequent exercise performance and activities of daily living. As such, considerable research has been undertaken to identify modalities that can alleviate the symptoms of EIMD and expedite recovery, including various dietary interventions. Supplementation with dairy protein has shown promise in alleviating the symptoms of EIMD however, despite this growing evidence, there is no consensus as to the effect of dairy protein supplementation on recovery from EIMD. As an alternative to dairy protein, several recent studies suggest that supplementation with collagen hydrolysate, an inexpensive, protein rich by-product of the meat industry, may improve rates of recovery after eccentric exercise, while also enhancing adaptations to strenuous exercise. However, only a few studies have investigated the effect of collagen hydrolysate on recovery from EIMD and it appears that none have compared collagen hydrolysate to dairy protein.
Therefore, the aim of this study is to investigate the effects of collagen hydrolysate on recovery from EIMD. Healthy male participants, aged between 18 and 40, will undertake a single trial in which they will complete a single 30-minute bout of downhill running at -15% incline at 70% of VO2max speed. Measures of muscle soreness, muscle function, running economy and blood markers of inflammation and muscle damage will be made prior to exercise and again 30 minutes, 24, 48 and 72 hours after exercise. Participants will consume either a supplement containing 25 g of protein from collagen hydrolysate, hydrolysed milk or a non-protein placebo powder 45 minutes, 22, 46 and 70 hours post-exercise. We hypothesise that, when compared to an equivalent amount of dairy protein or a placebo, collagen hydrolysate will reduce muscle soreness and inflammation and increase the rate of recovery for measures of muscle function.
