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Nutrients 2017, 9(9), 943;

High Intensity Exercise: Can It Protect You from A Fast Food Diet?

Department of Exercise Science, Université du Québec à Montréal, Montreal, QC H3C 3P8, Canada
Centre de recherche de l’Institut universitaire de gériatrie de Montréal, Montreal, QC H3W 1W5, Canada
Institut de Recherches Cliniques de Montréal (IRCM), Montreal, QC H2W 1R7, Canada
Department of Nutrition, University de Montréal, Montreal, QC H3T 1A8, Canada
Author to whom correspondence should be addressed.
Received: 10 July 2017 / Revised: 22 August 2017 / Accepted: 25 August 2017 / Published: 26 August 2017
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The purpose of this study was to assess the ability of high intensity exercise to counteract the deleterious effects of a fast food diet on the cardiometabolic profile of young healthy men. Fifteen men were subjected to an exclusive fast food diet from a popular fast food restaurant chain (three extra value meals/day + optional snack) for 14 consecutive days. Simultaneously, participants were asked to perform each day high intensity interval training (HIIT) (15 × 60 sec sprint intervals (~90% of maximal heart rate)) on a treadmill. Fast food diet and energy expenditure profiles of the participants during the intervention were assessed as well as body composition (DXA), cardiometabolic profile (lipid, hepatic enzymes, glycated hemoglobin, glucose, insulin, hsC-reactive protein (hsCRP) and blood pressure) and estimated maximal oxygen consumption (VO2 max) pre- and post-experiment. We found significant improvements for fat mass, lean body mass, estimated VO2 max, fasting glucose, serum lipoprotein(a) and hsCRP after the intervention (p < 0.05). HDL-cholesterol significantly decreased (p < 0.002), but the triglycerides/HDL-cholesterol ratio did not change. All other cardiometabolic variables measured remained stable, which includes the primary outcome: the HOMA index (pre: 1.83 ± 1.2 vs. post: 1.54 ± 0.7 values; p = 0.35). In conclusion, in large part, insulin resistance and the cardiometabolic profile of young healthy individuals seems to be protected by HIIT from a fast food diet. View Full-Text
Keywords: body composition; energy expenditure; energy intake; lipid and inflammation profile body composition; energy expenditure; energy intake; lipid and inflammation profile
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 (CC BY 4.0).

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Duval, C.; Rouillier, M.-A.; Rabasa-Lhoret, R.; Karelis, A.D. High Intensity Exercise: Can It Protect You from A Fast Food Diet? Nutrients 2017, 9, 943.

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