LAUSR

As a result of the aging process muscle mass and function decreases. Accompanied by an increased fat mass this is highly associated with health complaints. Because of an aging society, interventions focusing on an improvement of body composition are an important effort in preventive medicine. Several clinical trials have shown that resistance training in combination with protein supplementation improves muscle mass and function by e.g. influencing the mTOR pathway. Recently, it has been demonstrated that specific collagen peptides (SCP) together with intense resistance exercise improved muscle strength and body composition in elderly sarcopenic men. However, the dosage needed to induce respective effects is still not clear. Therefore, the aim of this study was to investigate the effects of resistance exercise combined with different dosages of collagen peptides on body composition in middle-aged untrained men. 105 men aged 30 to 60 years performed resistance training three times per week for 12 weeks. Participants ingested 10, 15 or 20 g of collagen peptides daily. Changes in fat free mass (FFM) and fat mass (FM) after supplementation of different dosages of specific collagen peptides (BODYBALANCE) was determined by DEXA, respectively. Differences within groups were statistical analyzed with Wilcoxon Rank-Sum test. Kruskal-Wallis-Test was used for differences between study groups.