Effects of Low Versus Moderate Glycemic Index Diets on Aerobic Capacity in Endurance Runners: Three-Week Randomized Controlled Crossover Trial

Durkalec-Michalski, Krzysztof; Zawieja, Emilia E.; Zawieja, Bogna E.; Jurkowska, Dominika; Buchowski, Maciej S.; Jeszka, Jan

doi:10.3390/nu10030370

Submit to this Journal Review for this Journal Edit a Special Issue

Article Menu

...

Open AccessArticle

Effects of Low Versus Moderate Glycemic Index Diets on Aerobic Capacity in Endurance Runners: Three-Week Randomized Controlled Crossover Trial

Krzysztof Durkalec-Michalski

^1,*

¹,

²,

¹,

³ and

Institute of Human Nutrition and Dietetics, Poznan University of Life Sciences, 60-624 Poznań, Poland

Department of Mathematical and Statistical Methods, Poznań University of Life Sciences, 60-637 Poznań, Poland

Energy Balance Laboratory, Department of Medicine, Vanderbilt University, Nashville, TN 37232, USA

Author to whom correspondence should be addressed.

Nutrients 2018, 10(3), 370; https://doi.org/10.3390/nu10030370

Received: 22 January 2018 / Revised: 22 February 2018 / Accepted: 12 March 2018 / Published: 17 March 2018

(This article belongs to the Special Issue Advances in Sport and Performance Nutrition)

View Full-Text Download PDF

Browse Figures

Citation Export

Abstract

The glycemic index (GI) of ingested carbohydrates may influence substrate oxidation during exercise and athletic performance. Therefore, the aim of this study was to assess the effect of low- and moderate-GI three-week diets on aerobic capacity and endurance performance in runners. We conducted a randomized crossover feeding study of matched diets differing only in GI (low vs. moderate) in 21 endurance-trained runners. Each participant consumed both, low- (LGI) and moderate-GI (MGI) high-carbohydrate (~60%) and nutrient-balanced diets for three weeks each. At the beginning and end of each diet, participants had their aerobic capacity and body composition measured and performed a 12-min running test. After LGI, time to exhaustion during incremental cycling test (ICT) and distance covered in the 12-min run were significantly increased. The MGI diet led to an increase in maximal oxygen uptake (

\dot{V}

O₂max), but no performance benefits were found after the MGI diet. The LGI and MGI diets improved time and workload at gas exchange threshold (GET) during ICT. The results indicate that a three-week high-carbohydrate LGI diet resulted in a small but significant improvement in athletic performance in endurance runners. Observed increase in

\dot{V}

O₂max on MGI diet did not affect performance. View Full-Text

Keywords: glycemic index; nutrition; aerobic capacity; endurance; running performance; body composition

▼ Show Figures

Figure 1

This is an open access article distributed under the Creative Commons Attribution License which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited

Supplementary Material

Supplementary File 1:
RAR-Document (RAR, 76 KiB)

Share and Cite

MDPI and ACS Style

Durkalec-Michalski, K.; Zawieja, E.E.; Zawieja, B.E.; Jurkowska, D.; Buchowski, M.S.; Jeszka, J. Effects of Low Versus Moderate Glycemic Index Diets on Aerobic Capacity in Endurance Runners: Three-Week Randomized Controlled Crossover Trial. Nutrients 2018, 10, 370. https://doi.org/10.3390/nu10030370

AMA Style

Durkalec-Michalski K, Zawieja EE, Zawieja BE, Jurkowska D, Buchowski MS, Jeszka J. Effects of Low Versus Moderate Glycemic Index Diets on Aerobic Capacity in Endurance Runners: Three-Week Randomized Controlled Crossover Trial. Nutrients. 2018; 10(3):370. https://doi.org/10.3390/nu10030370

Chicago/Turabian Style

Durkalec-Michalski, Krzysztof, Emilia E. Zawieja, Bogna E. Zawieja, Dominika Jurkowska, Maciej S. Buchowski, and Jan Jeszka. 2018. "Effects of Low Versus Moderate Glycemic Index Diets on Aerobic Capacity in Endurance Runners: Three-Week Randomized Controlled Crossover Trial" Nutrients 10, no. 3: 370. https://doi.org/10.3390/nu10030370

Find Other Styles

Note that from the first issue of 2016, MDPI journals use article numbers instead of page numbers. See further details here.

Article Metrics

Abstract views Pdf views Html views

Article Menu

Effects of Low Versus Moderate Glycemic Index Diets on Aerobic Capacity in Endurance Runners: Three-Week Randomized Controlled Crossover Trial

Abstract

Supplementary Material

Share and Cite

Article Metrics

Article Access Statistics

Article Access Map by Country/Region

Further Information

Guidelines

MDPI Initiatives

Follow MDPI