Effects of a 12-Week Very-Low Carbohydrate High-Fat Diet on Maximal Aerobic Capacity, High-Intensity Intermittent Exercise, and Cardiac Autonomic Regulation: Non-randomized Parallel-Group Study

Result code in IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F61988987%3A17450%2F19%3AA20020UX" target="_blank" >RIV/61988987:17450/19:A20020UX - isvavai.cz</a>

Result on the web

<a href="https://www.frontiersin.org/articles/10.3389/fphys.2019.00912/full" target="_blank" >https://www.frontiersin.org/articles/10.3389/fphys.2019.00912/full</a>

DOI - Digital Object Identifier

<a href="http://dx.doi.org/10.3389/fphys.2019.00912" target="_blank" >10.3389/fphys.2019.00912</a>

Result language

angličtina

Original language name

Effects of a 12-Week Very-Low Carbohydrate High-Fat Diet on Maximal Aerobic Capacity, High-Intensity Intermittent Exercise, and Cardiac Autonomic Regulation: Non-randomized Parallel-Group Study

Original language description

Purpose: The aim of this non-randomized parallel group study was to examine the 12 week effects of a very low-carbohydrate high-fat diet (VLCHF) on maximal cardiorespiratory capacity, high-intensity interval training (HIIT) performance, and cardiac autonomic regulation.Methods: Twenty-four recreationally trained participants allocated to either a VLCHF (N = 12) or a habitual diet (HD; N = 12) group completed 12 weeks of a diet and exercise (VLCHF) or an exercise only intervention (HD). Maximal graded exercise tests (GXT) were performed at baseline, after 4, 8, and 12 weeks. A supervised HIIT session and the 30-15 Intermittent Fitness Test (30-15(IFT)) were conducted once a week.Results: Total time to exhaustion (TTE) in both GXT and 30-15(IFT) largely increased in both VLCHF (p = 0.005, BF10 = 11.30 and p = 0.001, BF10 >= 100, respectively) and HD (p = 0.018, BF10 = 3.87 and p = 0.001, BF10 >= 100, respectively) groups after 12 weeks. Absolute maximal oxygen uptake (&lt;(V)over dot&gt;O-2max) was not changed in both groups but relative &lt;(V)over dot&gt;O-2max increased in VLCHF in concert with reductions in body mass (66.7 +/- 10.2-63.1 +/- 8.5 kg). Cardiac autonomic regulation did not reveal any between-roup differences after 12 weeks. VLCHF diet induced an increase in beta-hydroxybutyrate, which tended to normalize during the intervention period.Conclusion: The 12 week VLCHF diet did not impair high-intensity continuous or intermittent exercise lasting up to 25 min, nor did it impair maximal cardiorespiratory performance or autonomic nervous system (ANS) activity.

Czech name

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Czech description

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Type

J_imp - Article in a specialist periodical, which is included in the Web of Science database

CEP classification

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OECD FORD branch

30306 - Sport and fitness sciences

Project

<a href="/en/project/GA18-08358S" target="_blank" >GA18-08358S: The effects of lowering dietary carbohydrates on health, exercise performance and wellbeing-related outcomes</a><br>

Continuities

P - Projekt vyzkumu a vyvoje financovany z verejnych zdroju (s odkazem do CEP)<br>S - Specificky vyzkum na vysokych skolach

Publication year

2019

Confidentiality

S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů

Name of the periodical

FRONTIERS IN PHYSIOLOGY

ISSN

1664-042X

e-ISSN

—

Volume of the periodical

10

Issue of the periodical within the volume

912

Country of publishing house

CH - SWITZERLAND

Number of pages

12

Pages from-to

1-12

UT code for WoS article

000475944500002

EID of the result in the Scopus database

2-s2.0-85069917338