Time 4 Collagen + – REF 5

5) Am J Clin Nutr 2017 Jan;105(1):136-143.

 

Vitamin C-enriched gelatin supplementation before intermittent activity augments collagen synthesis

Gregory Shaw ¹, Ann Lee-Barthel ², Megan Lr Ross ^1 3, Bing Wang ⁴, Keith Baar ^5 6 7

Abstract

Background: Musculoskeletal injuries are the most common complaint in active populations. More than 50% of all injuries in sports can be classified as sprains, strains, ruptures, or breaks of musculoskeletal tissues. Nutritional and/or exercise interventions that increase collagen synthesis and strengthen these tissues could have an important effect on injury rates.

Objective: This study was designed to determine whether gelatin supplementation could increase collagen synthesis.

Design: Eight healthy male subjects completed a randomized, double-blinded, crossover-design study in which they consumed either 5 or 15 g of vitamin C-enriched gelatin or a placebo control. After the initial drink, blood was taken every 30 min to determine amino acid content in the blood. A larger blood sample was taken before and 1 h after consumption of gelatin for treatment of engineered ligaments. One hour after the initial supplement, the subjects completed 6 min of rope-skipping to stimulate collagen synthesis. This pattern of supplementation was repeated 3 times/d with ≥6 h between exercise bouts for 3 d. Blood was drawn before and 4, 24, 48, and 72 h after the first exercise bout for determination of amino-terminal propeptide of collagen I content.