Hvilken type mælkeprotein er bedst til at øge muskelmassen når indtaget lige efter styrketræning i utrænede såvel som i eliteatleter?
Formålet med projektet er at vurdere hvorvidt valleprotein, som er hurtigt optageligt i fordøjelsessystemet, stimulerer til muskeltilvækst i højere grad end det langsommere optageige kasein.
Af: Grith Mortensen
Projektet vil give viden omkring hvilken proteinkilde fra mælk, der er bedst til at øge muskelopbygningen når indtage sker lige efter træning. Denne proteinkilde vil vi på den baggrundkunne anbefale til anvendelse i sportsdrik til styrketrænede atleter. Desuden vil man opnå viden omkring hvorvidt meget veltrænede atleter i samme grad vil have gavn af proteinindtaget og opnå ny viden omkring deres optimale indtag efter styrketræning.
Projekt: 1. september 2006 - 1. oktober 2009
Budget: 2.665.000 DKK
Intern finansiering: Mælkeafgiftsfonden
Ekstern finansiering: Team Danmark, HS Forskningsfond, Forskningsråd for Sygd./Sund., Lundbeck Fonden og
Bispebjerg Hospital
Projektleder: Michael Kjær
Institution: Bispebjerg Hospital
Publikationer og præsentationer
Peer-reviewed artikler:
Bülow J, Agergaard J, Kjaer M, Holm L, Reitelseder S. No additional effect of different types of physical activity on 10-hour muscle protein synthesis in elderly men on a controlled energy- and protein-sufficient diet. Experimental Gerontology 79: 16-25, 2016.
Bojsen-Møller KN, Jacobsen SH, Dirksen C, Jørgensen NB, Reitelseder S, Jensen J-EB, Kristiansen VB, Holst JJ, van Hall G, Madsbad S. Accelerated protein digestion and amino acid absorption after Roux-en-Y gastric bypass. American Journal of Clinical Nutrition 102(3):600-607, 2015.
Reitelseder S, Agergaard J, Doessing S, Helmark IC, Schjerling P, van Hall G, Kjaer M, Holm L. Positive muscle protein net balance and differential regulation of atrogene expression after resistance exercise and milk protein supplementation. European Journal of Nutrition 53(1): 321-333, 2014.
Dideriksen K, Reitelseder S, Holm L. Influence of amino acids, dietary protein, and physical activity on muscle mass development (invited review). Nutrients, special issue Interaction of Amino Acids and Dietary Proteins and Exercise on Muscle Health 5: 852-876, 2013.
Yde CC, Ditlev DB, Reitelseder S, Bertram HC. Metabonomic response to milk proteins after a single bout of heavy resistance exercise elucidated by 1H nuclear magnetic resonance spectroscopy. Metabolites, special issue NMR-based Metabolomics and Its Application 3: 33-46, 2013.
Bechshoeft R, Dideriksen KJ, Reitelseder S, Scheike T, Kjaer M, Holm L. The anabolic potential of dietary protein intake on skeletal muscle is prolonged by prior light-load exercise. Clinical Nutrition 32: 236-244, 2013.
Dideriksen KJ, Reitelseder S, Petersen SG, Hjort M, Helmark IC, Kjaer M, Holm L. Stimulation of muscle protein synthesis by whey and caseinate ingestion after resistance exercise in elderly individuals. Scandinavian Journal of Medicine & Science in Sports 21(6): e372-e383, 2011.
Reitelseder S, Kjaer M, Holm L. Reply to letter to the editor. American Journal of Physiology – Endocrinology and Metabolism 300: E611-E612, 2011.
Reitelseder S, Agergaard J, Doessing S, Helmark IC, Lund P, Kristensen NB, Frystyk J, Flyvbjerg A, Schjerling P, van Hall G, Kjaer M, Holm L. Whey and casein labeled with L-[1-13C]leucine and muscle protein synthesis: effect of resistance exercise and protein ingestion. American Journal of Physiology – Endocrinology and Metabolism 300(1): E231-E242, 2011.
Ph.d.-afhandling:
Reitelseder S. Milk proteins labelled with L-[1-13C]leucine and muscle protein turnover: effect of heavy resistance exercise and protein ingestion. The Faculty of Health Sciences, University of Copenhagen, 2011.
Speciale:
Dideriksen KJ. Milk proteins labelled with L-[1-13C]leucine and muscle protein synthesis: effect of resistance exercise, protein type, and timing of protein ingestion in elderly untrained individuals. The Faculty of Science, University of Copenhagen, 2009.
Formidlende artikler:
Reitelseder S, Dideriksen KJ, Holm L (2011): Mælkeproteiner forbedrer muskelopbygningen efter styrketræning. Mælkeritidende 124(11): 8-10.
Reitelseder S and Holm L (2008): Mælkeprotein og muskelmasse. Mælkeritidende 121(12): 302-304.
Inviterede mundtlige præsentationer:
Reitelseder S. Muscle and milk proteins. Danish Dairy Board Conference on Milk and Health, Copenhagen, Denmark, 2007.
Reitelseder S. Milk proteins and muscle recovery. Arla Foods Corporate Research Day 2007, Vejle, Denmark, 2007.
Abstrakts og præsentationer ved internationale videnskabelige konferencer:
Reitelseder S, Bülow J, Agergaard J, Kjaer M, Holm L. Daily living physical activities and muscle protein synthesis: a new and applied method with intrinsically stable isotope-labeled milk proteins as tracer (poster presentation). Experimental Biology 2014, San Diego, CA, USA, 2014.
Reitelseder S, Bülow J, Agergaard J, Kjaer M, Holm L. Validation of a new and practical method with stable isotope-labeled milk proteins as tracer for measurement of muscle protein synthesis (poster presentation). Sports Medicine Congress 2014, Kolding, Denmark, 2014.
Reitelseder S, Holm L, Doessing S, Helmark IC, van Hall G, Kjaer M. Muscle leucine oxidation after heavy resistance exercise and milk proteins (oral and poster presentation). 14th International Biochemistry of Exercise Conference, Guelph, Canada, 2009.
Reitelseder S, Holm L, Doessing S, van Hall G, Kjaer M. Milk proteins and skeletal muscle protein turnover in relation to resistance exercise (poster presentation). 1st Arla Foods Research Seminar, Aarhus, Denmark, 2007.
Læs mere om projektets resultater i slutrapporten
Grith Mortensen
Chefkonsulent, Branchesekretariat mejeri, Landbrug & Fødevarer/Skejby