Match!

Efficacy of ketogenic diet on body composition during resistance training in trained men: a randomized controlled trial

Published on Dec 1, 2018in Journal of The International Society of Sports Nutrition3.84
· DOI :10.1186/s12970-018-0236-9
Salvador Vargas1
Estimated H-index: 1
(UMA: University of Málaga),
Ramón Romance1
Estimated H-index: 1
(UMA: University of Málaga)
+ 5 AuthorsJavier Benítez-Porres3
Estimated H-index: 3
(UMA: University of Málaga)
Abstract
Ketogenic diets (KD) have become a popular method of promoting weight loss. More recently, some have recommended that athletes adhere to ketogenic diets in order to optimize changes in body composition during training. This study evaluated the efficacy of an 8-week ketogenic diet (KD) during energy surplus and resistance training (RT) protocol on body composition in trained men. Twenty-four healthy men (age 30 ± 4.7 years; weight 76.7 ± 8.2 kg; height 174.3 ± 19.7 cm) performed an 8-week RT program. Participants were randomly assigned to a KD group (n = 9), non-KD group (n = 10, NKD), and control group (n = 5, CG) in hyperenergetic condition. Body composition changes were measured by dual energy X-ray absorptiometry (DXA). Compliance with the ketosis state was monitored by measuring urinary ketones weekly. Data were analyzed using a univariate, multivariate and repeated measures general linear model (GLM) statistics. There was a significant reduction in fat mass (mean change, 95% CI; p-value; Cohen’s d effect size [ES]; − 0.8 [− 1.6, − 0.1] kg; p   0.05; ES = − 0.17 and − 0,5 [− 2.4, 1.3] kg; p > 0.05; ES = − 0.12, respectively) or visceral adipose tissue (− 33.8 [− 90.4, 22.8]; p > 0.5; ES = − 0.17 and 1.7 [− 133.3, 136.7]; p > 0.05; ES = 0.01, respectively). No significant increases were observed in total body weight (− 0.9 [− 2.3, 0.6]; p > 0.05; ES = [− 0.18]) and muscle mass (− 0.1 [− 1.1,1.0]; p > 0,05; ES = − 0.04) in the KD group, but the NKD group showed increases in these parameters (0.9 [0.3, 1.5] kg; p   0.05; ES = 0.05 and 0.8 [− 0.4, 2.1]; p > 0.05; ES = 0.26, respectively) in the CG. Our results suggest that a KD might be an alternative dietary approach to decrease fat mass and visceral adipose tissue without decreasing lean body mass; however, it might not be useful to increase muscle mass during positive energy balance in men undergoing RT for 8 weeks.
  • References (53)
  • Citations (8)
References53
Newest
#1Takuro Okamura (Kyoto Prefectural University of Medicine)H-Index: 3
#2Yoshitaka Hashimoto (Kyoto Prefectural University of Medicine)H-Index: 10
Last.Michiaki Fukui (Kyoto Prefectural University of Medicine)H-Index: 33
view all 6 authors...
#1Jagriti Upadhyay (BMC: Boston Medical Center)H-Index: 10
#2Olivia M. Farr (BIDMC: Beth Israel Deaconess Medical Center)H-Index: 20
Last.Christos S. Mantzoros (BIDMC: Beth Israel Deaconess Medical Center)H-Index: 106
view all 5 authors...
#1Ryan Dalton (A&M: Texas A&M University)H-Index: 5
#2Ryan J. Sowinski (A&M: Texas A&M University)H-Index: 2
Last.Richard B. Kreider (A&M: Texas A&M University)H-Index: 39
view all 14 authors...
#1Alan A. Aragon (CSUN: California State University, Northridge)H-Index: 9
#2Brad J. Schoenfeld (Lehman College)H-Index: 25
Last.Jose Antonio (NSU: Nova Southeastern University)H-Index: 30
view all 17 authors...
#1Neil A. Youngson (UNSW: University of New South Wales)H-Index: 16
#2Margaret J. Morris (UNSW: University of New South Wales)H-Index: 50
Last.J. William O. Ballard (UNSW: University of New South Wales)H-Index: 29
view all 3 authors...
#1Mark Evans (UCD: University College Dublin)H-Index: 4
#2Karl E. Cogan (UCD: University College Dublin)H-Index: 2
Last.Brendan Egan (DCU: Dublin City University)H-Index: 13
view all 3 authors...
Cited By8
Newest
#1Antonio Paoli (University of Murcia)H-Index: 24
#2Pasqualina Cancellara (UNIPD: University of Padua)
Last.Tatiana Moro (UTMB: University of Texas Medical Branch)H-Index: 10
view all 4 authors...
#1Jason M. Cholewa (CCU: Coastal Carolina University)H-Index: 7
#2Daniel E. Newmire (University of Texas at Austin)H-Index: 1
Last.Nelo Eidy Zanchi (UFMA: Federal University of Maranhão)H-Index: 3
view all 3 authors...
#1Richard A. LaFountain (OSU: Ohio State University)H-Index: 4
#2Vincent J. Miller (OSU: Ohio State University)H-Index: 3
Last.Jeff S. Volek (OSU: Ohio State University)H-Index: 70
view all 15 authors...
View next paperThe Three-Month Effects of a Ketogenic Diet on Body Composition, Blood Parameters, and Performance Metrics in CrossFit Trainees: A Pilot Study