Chronological Changes During 10-Day Intermittent Fasting with Low Energy Intake on High Intensity Aerobic Performance and Lipid Constituents

DOI

10.2991/yishpess-cois-18.2018.73How to use a DOI?

Keywords

ramadan fasting, caloric restriction, aerobic performance, lipids

Abstract

Athletes generally undertaken intermittent fasting via reducing their daily caloric intake for certain period of time. However, such practice may impair high intensity exercise performance mainly due to disturbances in fuel availability. Meanwhile, if such practice was continuous, body will make changes to meet the exercise demand. Hence, this study aimed to examine changes in lipid constituents throughout 10 days (D) of intermittent fasting (IFA) and normal diet (CON) while performing a series of intense exercise. Twenty male collegiate athletes (aged 20.3 ± 2.7 years; 2.8 ± 0.2 L.min-1 VO2peak) were randomly allocated to either IFA group which consumed 1590 ± 79 kcal.day-1 (40% total caloric omission), or CON group with 2672 ± 139 kcal.day-1 (normal intake). Participants performed high-intensity exercise at 90% VO2peak cycling to exhaustion, 2 h after breakfast in the morning on D0, D2, D4, D6, D8, and D10 before blood samples were collected. The high intensity exercise time-to-exhaustion performance declined over the 10 days, however, showed a trend of recovery at the end of the experimental period. Compared to D0, plasma triglycerides decreased on D6-10 (P<0.01) whilst total cholesterol (TC) increased in IFA on D2-10 (P=0.01). LDL increased in IFA on D2-10 (P=0.01) in contrast to reductions in CON on D8-10 (P=0.01), whilst HDL increased in IFA on D6-10 (P=0.01). Loss in body weight was consistent with the changes in lipid constituents. In conclusion, the practice of intermittent fasting must exceed 10 days to ensure that high-intensity performance does not deteriorate although changes in HDL is evidence in the later phase of the intervention period.

Copyright

© 2018, the Authors. Published by Atlantis Press.

Open Access

This is an open access article distributed under the CC BY-NC license (http://creativecommons.org/licenses/by-nc/4.0/).

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TY  - CONF
AU  - Ashril Yusof
AU  - Mohamed Nashrudin Naharudin
PY  - 2018/12
DA  - 2018/12
TI  - Chronological Changes During 10-Day Intermittent Fasting with Low Energy Intake on High Intensity Aerobic Performance and Lipid Constituents
BT  - Proceedings of the 2nd Yogyakarta International Seminar on Health, Physical Education, and Sport Science (YISHPESS 2018) and 1st Conference on Interdisciplinary Approach in Sports (CoIS 2018)
PB  - Atlantis Press
SP  - 292
EP  - 297
SN  - 2352-5398
UR  - https://doi.org/10.2991/yishpess-cois-18.2018.73
DO  - 10.2991/yishpess-cois-18.2018.73
ID  - Yusof2018/12
ER  -