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“Dietary Protein Intake and Distribution Patterns of Well-Trained Dutch Athletes” by Gillen JB et al. International Journal of Sport Nutrition and Exercise Metabolism © 2016 Human Kinetics, Inc.

Note: This article will be published in a forthcoming issue of the International Journal of Sport Nutrition and Exercise Metabolism. This article appears here in its accepted, peerreviewed form; it has not been copyedited, proofed, or formatted by the publisher. Section: Original Research Article Title: Dietary Protein Intake and Distribution Patterns of Well-Trained Dutch Athletes Authors: Jenna B. Gillen1, Jorn Trommelen2, Floris C. Wardenaar3, Naomi Y.J. Brinkmans3, Joline J. Versteegen3, Kristin L. Jonvik2,3, Christoph Kapp4, Jeanne de Vries4, Joost J.G.C. van den Borne5, Martin J. Gibala1, and Luc J.C. van Loon2 Affiliations: 1Department of Kinesiology, McMaster University, Hamilton, ON, Canada. 2 Department of Human Movement Sciences, Maastricht University, Maastricht, the Netherlands. 3 Institute of Sport and Exercise Studies, HAN University of Applied Sciences, Nijmegen, the Netherlands. 4Division of Human Nutrition, Wageningen University, the Netherlands. 5 FrieslandCampina, Amersfoort, the Netherlands. Running Head: Protein intake patterns of well-trained athletes Journal: International Journal of Sport Nutrition and Exercise Acceptance Date: September 14, 2016 ©2016 Human Kinetics, Inc.

DOI: http://dx.doi.org/10.1123/ijsnem.2016-0154

“Dietary Protein Intake and Distribution Patterns of Well-Trained Dutch Athletes” by Gillen JB et al. International Journal of Sport Nutrition and Exercise Metabolism © 2016 Human Kinetics, Inc.

Dietary protein intake and distribution patterns of well-trained Dutch athletes Jenna B. Gillen1, Jorn Trommelen2, Floris C. Wardenaar3, Naomi Y.J. Brinkmans3, Joline J.

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Versteegen3, Kristin L. Jonvik2,3, Christoph Kapp4, Jeanne de Vries4, Joost J.G.C. van den Borne5, Martin J. Gibala1, Luc J.C. van Loon2 1

Department of Kinesiology, McMaster University, Hamilton, ON, Canada

2

Department of Human Movement Sciences, Maastricht University, Maastricht, the Netherlands

3

Institute of Sport and Exercise Studies, HAN University of Applied Sciences, Nijmegen, the

Netherlands 4

Division of Human Nutrition, Wageningen University, the Netherlands

5

FrieslandCampina, Amersfoort, the Netherlands

Address for correspondence Luc J.C. van Loon, PhD Department of Human Movement Sciences Faculty of Health, Medicine and Life Sciences Maastricht University Medical Centre+ P.O. Box 616, 6200 MD Maastricht the Netherlands Tel: +31 43 3881397 Fax: +31 43 3670976 Email: [email protected]

Running Title: Protein intake patterns of well-trained athletes

“Dietary Protein Intake and Distribution Patterns of Well-Trained Dutch Athletes” by Gillen JB et al. International Journal of Sport Nutrition and Exercise Metabolism © 2016 Human Kinetics, Inc.

ABSTRACT Dietary protein intake should be optimized in all athletes to ensure proper recovery and enhance the skeletal muscle adaptive response to exercise training. In addition to total protein intake, the use of specific protein-containing food sources and the distribution of protein throughout the day are relevant for optimizing protein intake in athletes. In the present study, we examined the daily intake and distribution of various protein-containing food sources in a large cohort of strength, Downloaded by Hogeschool Van Arnhem on 10/11/16, Volume 0, Article Number 0

endurance and team-sport athletes. Well-trained male (n=327) and female (n=226) athletes completed multiple web-based 24-h dietary recalls over a 2-4 wk period. Total energy intake, the contribution of animal- and plant-based proteins to daily protein intake, and protein intake at six eating moments were determined. Daily protein intake averaged 108±33 and 90±24 g in men and women, respectively, which corresponded to relative intakes of 1.5±0.4 and 1.4±0.4 g/kg. Dietary protein intake was correlated with total energy intake in strength (r=0.71, p