Volume 2, Issue 6 pp. 334-340
ORIGINAL ARTICLE

Effect of carbohydrate restriction on oxidative stress response to high-intensity resistance exercise

Matthew John McAllister

Corresponding Author

Matthew John McAllister

Metabolic and Applied Physiology Lab, Department of Health and Human Performance, Texas State University, San Marcos, Texas

Correspondence

Matthew John McAllister, Department of Health & Human Performance, Texas State University, San Marcos, TX 78666.

Email: [email protected]

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Steven A. Basham

Steven A. Basham

Applied Physiology Lab, Department of Kinesiology, Mississippi State University, Starkville, Mississippi

Author Steven Basham was affiliated with Mississippi State University at the time of data collection and is currently employed by the Gatorade Sports Science Institute, a division of PepsiCo, Inc.

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JohnEric W. Smith

JohnEric W. Smith

Applied Physiology Lab, Department of Kinesiology, Mississippi State University, Starkville, Mississippi

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Brent J. Fountain

Brent J. Fountain

Department of Food Science, Nutrition, and Health Promotion, Mississippi State University, Starkville, Mississippi

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Benjamin M. Krings

Benjamin M. Krings

Department of Health and Human Performance, University of Wisconsin-Platteville, Platteville, Wisconsin

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Hunter S. Waldman

Hunter S. Waldman

Human Performance Lab, Department of Kinesiology, University of North Alabama, Florence, Alabama

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First published: 27 July 2019
Citations: 1

Abstract

Ketogenic diets consisting of >70% dietary intake from lipids may induce favorable shifts in the redox environment such as reduced markers of oxidative stress (OS). However, a diet with such low dietary carbohydrate intake is difficult to sustain for long periods of time. This study investigated the effects of a low-carbohydrate, high-fat (LCHF) diet on markers of OS before and after high-intensity resistance exercise (HIRE). The HIRE protocol involved five rounds of back squat, deadlift, and bench press completed in respective order and in a descending ladder (10, 8, 6, 4, 2 repetitions) with minimal to no rest. The LCHF diet was 15 days of >50% of calories from fat, ≥25% of calories from protein, and ≤25% of calories from carbohydrates. Blood was sampled before exercise, immediately post-exercise, and 60 minutes post-exercise and analyzed for total antioxidant capacity (TAC), tumor necrosis factor-α (TNF-α), malondialdehyde (MDA), superoxide dismutase (SOD), and glucose. The exercise protocol increased (P < .05) plasma levels of glucose, TNF-α, and MDA. There was a significant increase in MDA from pre to post exercise following the western diet but not the LCHF condition. The LCHF diet did not significantly impact any other blood marker of OS.

CONFLICT OF INTEREST

The authors have no conflict of interest in relation to this manuscript.

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