Position Statement: The International Society of Sports Nutrition (ISSN) bases the following position stand on a critical analysis of the literature regarding the effects of diet types (macronutrient composition; eating styles) and their influence on body composition. The ISSN has concluded the following. 1) There is a multitude of diet types and eating styles, whereby numerous subtypes fall under each major dietary archetype. 2) All body composition assessment methods have strengths and limitations. 3) Diets primarily focused on fat loss are driven by a sustained caloric deficit. The higher the baseline body fat level, the more aggressively the caloric deficit may be imposed. Slower rates of weight loss can better preserve lean mass (LM) in leaner subjects. 4) Diets focused primarily on accruing LM are driven by a sustained caloric surplus to facilitate anabolic processes and support increasing resistance-training demands. The composition and magnitude of the surplus, as well as training status of the subjects can influence the nature of the gains. 5) A wide range of dietary approaches (low-fat to low-carbohydrate/ketogenic, and all points between) can be similarly effective for improving body composition. 6) Increasing dietary protein to levels significantly beyond current recommendations for athletic populations may result in improved body composition. Higher protein intakes (2.3–3.1 g/kg FFM) may be required to maximize muscle retention in lean, resistance-trained subjects under hypocaloric conditions. Emerging research on very high protein intakes (>3 g/kg) has demonstrated that the known thermic, satiating, and LM-preserving effects of dietary protein might be amplified in resistance-training subjects. 7) The collective body of intermittent caloric restriction research demonstrates no significant advantage over daily caloric restriction for improving body composition. 8) The long-term success of a diet depends upon compliance and suppression or circumvention of mitigating factors such as adaptive thermogenesis. 9) There is a paucity of research on women and older populations, as well as a wide range of untapped permutations of feeding frequency and macronutrient distribution at various energetic balances combined with training. Behavioral and lifestyle modification strategies are still poorly researched areas of weight management.

Alan A. Aragon

Brad J. Schoenfeld

Robert Wildman

Susan Kleiner

Trisha VanDusseldorp

Lem Taylor

Conrad P. Earnest

Paul J. Arciero

Colin Wilborn

Douglas S. Kalman

Jeffrey R. Stout

Darryn S. Willoughby

Bill Campbell

Shawn M. Arent

Laurent Bannock

Abbie E. Smith-Ryan

Jose Antonio

Journal of the International Society of Sports Nutrition

国际运动营养学会杂志 (JISSN) 专注于运动营养和补充策略对身体成分、身体表现和新陈代谢的急性和慢性影响。 JISSN 面向研究人员和运动爱好者，专注于提供有关健康、疾病、康复、训练和表现的运动和营养知识。该杂志提供了一个平台，读者可以在该平台上确定可以增强运动和/或训练适应性的营养策略，从而改善健康和表现。

The Journal of the International Society of Sports Nutrition (JISSN) focuses on the acute and chronic effects of sports nutrition and supplementation strategies on body composition, physical performance, and metabolism. This journal is aimed at researchers and sports enthusiasts, providing knowledge on sports and nutrition related to health, disease, rehabilitation, training, and performance. JISSN offers a platform for readers to identify nutritional strategies that can enhance exercise and/or training adaptations, thereby improving health and performance.

《Journal of the International Society of Sports Nutrition》（JISSN）专注于运动营养和补充策略对身体成分、身体表现及新陈代谢的急性和慢性影响。该期刊面向研究人员和运动爱好者，致力于提供关于健康、疾病、康复、训练和表现的运动与营养知识。JISSN为读者提供了一个平台，使他们能够识别出能够增强运动和/或训练适应性的营养策略，从而改善健康和表现。

International society of sports nutrition position stand: diets and body composition

There is a paucity of research on women and older populations, as well as a wide range of untapped permutations of feeding frequency and macronutrient distribution at various energetic balances combined with training, which are still poorly researched areas of weight management.

国际运动营养学会立场声明：饮食与身体成分

Category	Quartile
医学	2
医学, 营养学	2
医学, 运动科学	2

International society of sports nutrition position stand: diets and body composition

ivySCI AI Smartly Parses PDF, Answers Researchers' Questions, and Helps You Understand Papers in Seconds

Journal Info

Category	Quartile
SPORT SCIENCES	1