Effects of a 15-Day Low Carbohydrate, High-Fat Diet in Resistance-Trained Men

Journal of Strength and Conditioning Research
Hunter S WaldmanMatthew J McAllister

Abstract

Waldman, HS, Krings, BM, Basham, SA, Smith, JW, Fountain, BJ, and McAllister, MJ. Effects of a 15-day low carbohydrate, high-fat diet in resistance-trained men. J Strength Cond Res 32(11): 3103-3111, 2018-This study examined the effects of a 15-day isocaloric low carbohydrate (<25% E), high-fat (>50% E) (LCHF) diet on physiological and metabolic alterations in resistance-trained (RT) men. College-aged RT men (n = 11) completed 4 V[Combining Dot Above]O2max tests using treadmill every 5 days during the 15-day trial. Blood was drawn intravenously pre-exercise across each experimental trial for insulin, cortisol, and glucose. Pulmonary data were collected and substrate oxidation (OXI) was calculated during exercise. Body mass decreased (p < 0.04) with no further changes in anthropometric measures. Time to exhaustion was not affected across each day. Insulin dropped below baseline values (p < 0.0005). Cortisol increased from baseline to day 5 (p < 0.004) but returned back to near baseline at day 10, whereas glucose remained within normal range throughout the duration of the study. Carbohydrate (CHO) OXI dropped (p < 0.001) from baseline to day 5, and fat OXI increased from baseline to day 5 (p < 0.0001). Heart rate decreased from b...Continue Reading

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Citations

Aug 31, 2019·Journal of Strength and Conditioning Research·Hunter S WaldmanMatthew J McAllister
Nov 13, 2019·Current Nutrition Reports·Matthew B KasparMenaka Sarav
Apr 4, 2021·Nutrients·Barbara FrączekFlorentyna Tyrała
Dec 11, 2020·Applied Physiology, Nutrition, and Metabolism = Physiologie Appliquée, Nutrition Et Métabolisme·Ben M KringsJohnEric W Smith

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