Ketogenic diets, exercise performance, and training adaptations

Borszcz, Fernando Klitzke; Gabiatti, Mariana Papini; Lucas, Ricardo Dantas de; Hansen, Fernanda

doi:10.1097/mco.0000000000000940

Cited by 1 publication

(2 citation statements)

References 27 publications

(65 reference statements)

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“…In CrossTraining athletes, it has been observed that similar changes in 400 m sprint and VO 2peak occurred in both ketogenic and non-ketogenic protocols [ 10 ]. This might be partially explained by the metabolic flexibility reached after full adaptation to the nutritional ketosis [ 36 ] which is associated with the mitochondrial dynamics and anti-oxidative capacity [ 37 ].…”

Section: Discussionmentioning

confidence: 99%

“…It is essential to note the considerable number of dropouts among participants, particularly in the initial weeks of the KD nutritional intervention. It seems that the first weeks of the KD negatively affect physical performance due to alterations in perceived exertion, directly influencing adherence to the training and nutrition program [ 36 ]. Additional research is needed to assess whether this adherence issue occurs when individuals are unfamiliar with carbohydrate restriction.…”

Section: Discussionmentioning

confidence: 99%

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The effect of the ketogenic diet on resistance training load management: a repeated-measures clinical trial in trained participants

Vargas-Molina,

García-Sillero,

Bonilla

et al. 2024

Journal of the International Society of Sports Nutrition

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Background The effect of low-carbohydrate high-fat dietary manipulation, such as the ketogenic diet (KD), on muscle strength assessment in resistance-training (RT) participants has focused on the one-repetition maximum test (1-RM). However, a pre-specified 1-RM value during an exercise training program disregards several confounding factors (i.e. sleep, diet, and training-induced fatigue) that affect the exerciser’s “true” load and daily preparedness. We aimed to evaluate the effect of a 6-week RT program on load control-related variables in trained subjects following a KD intervention. Methods Fourteen resistance-trained individuals (3F, 11 M; 30.1 [6.2] years; 174.2 [7.6] cm; 75.7 [10.8] kg; BMI 24.8 [2.1] kg·m −2 ) completed this single-arm repeated-measures clinical trial. Load management variables included volume load, number of repetitions, perceived exertion (RPE), movement velocity loss, and exertion index. These primary outcomes were assessed weekly before, during, and at the end of a 6-week RT program that included traditional RT exercises (bench press, femoral lying down, lat pulldown, leg extension, and back squat). Results There was a significant difference in RPE between weeks ( p = 0.015, W = 0.19) with a slight trend in decreasing RPE. We found differences in the volume load per week ( p < 0.001; W = 0.73 and p < 0.001, W = 0.81, respectively), with an increase in the last weeks. In the control of the load based on movement velocity, we did not find significant differences between weeks ( p = 0.591, W = 0.06), although significant differences were found in the effort index ( p = 0.026, W = 0.17). Conclusions A KD diet in recreational strength participants does not appear to lead to performance losses during a RT program aimed at improving body composition. However, the lack of adherence and familiarity with the ketogenic diet must be considered specially during first weeks.

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Section: Discussionmentioning

confidence: 99%

Section: Discussionmentioning

confidence: 99%