The Dose-response of Vitamin C-enriched Collagen on Markers of Collagen Synthesis in Middle-Aged Men and Women Following Resistance Exercise
The Dose-response of Vitamin C-enriched Collagen on Markers of Collagen Synthesis in Middle-Aged Men and Women Following Resistance Exercise
This study aimed to investigate the effect of different doses of hydrolyzed collagen (HC) with resistance exercise (RE) on whole body collagen synthesis in middle-aged males and females.
This study aimed to investigate the effect of different doses of hydrolyzed collagen (HC) with resistance exercise (RE) on whole body collagen synthesis in healthy middle-aged males and females.
Healthy middle-aged males and females ingested 0 grams, 15 grams or 30 grams HC with 50 milligrams vitamin C 1h prior to performing four sets' leg press RE at 10-repetition maximum load, after which they rested for six hours. Blood samples were collected throughout each trial to analyse procollagen type Ⅰ N-terminal propeptide (PⅠNP, a biomarker of collagen synthesis) and β-isomerized C-terminal telopeptide of type I collagen (β-CTX, a biomarker of collagen breakdown) concentration, and the concentration of 18 amino acids that constitute collagen.
This is the first study to investigate the combined effect of different doses HC with high-intensity RE on whole body collagen synthesis in middle-aged men and women. If 30 grams HC intake with RE does augment collagen synthesis more than RE alone, this suggests that long-term HC intake with chronic RE would be beneficial for tendon health, because collagen is the most abundant protein in tendon.
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