The effect of 10 days of intermittent fasting on Wingate anaerobic power and prolonged high-intensity time-to-exhaustion cycling performance

Naharudin, Mohamed Nashrudin and Yusof, Ashril (2018) The effect of 10 days of intermittent fasting on Wingate anaerobic power and prolonged high-intensity time-to-exhaustion cycling performance. European Journal of Sport Science, 18 (5). pp. 667-676. ISSN 1746-1391

Full text not available from this repository.
Official URL: https://doi.org/10.1080/17461391.2018.1438520

Abstract

Many physically active individuals have undertaken intermittent fasting to reduce their daily caloric intake. However, abstaining from meals for a specific length of time may lead to the acute disturbance of highly carbohydrate-dependent exercise performance. The purpose of this study was to observe the effect of 10 days of intermittent fasting on high-intensity type exercises, Wingate anaerobic (WT) and prolonged high-intensity time-to-exhaustion (HIT) cycling test. Twenty participants were randomised into an intermittent fasting (FAS) and a control group (CON). One day after baseline data collection on Day-0 where participants consumed their recommended daily caloric intake (FAS = 2500 ± 143 kcal day−1; CON = 2492 ± 20 kcal day−1) served over a course of five meals, the FAS group consumed only four meals where 40% was restricted by the omission of lunch (FAS = 1500 ± 55 kcal day−1). This diet was then continued for 10 days. Data on exercise performance and other dependent variables were collected on Day-2, -4, -6, -8 and -10. A reduction in WT power in the FAS group was observed on Day-2 (821.74 ± 66.07 W) compared to Day-0 (847.63 ± 95.94 W) with a moderate effect size (p <.05, ES = 0.4), while HIT time-to-exhaustion performance declined over the 10 days with a trend of recovery from a large to a minimum effect size (p <.05, ES = 0.8–0.3). Body weight and triglyceride were consistently reduced in the FAS group (p <.01). The present study suggests that intermittent fasting must exceed 10 days to ensure that high-intensity performance does not deteriorate because this length of time seems to be required for effective adaptation to the new dietary regimen.

Item Type: Article
Uncontrolled Keywords: Exercise; performance; nutrition
Subjects: G Geography. Anthropology. Recreation > GV Recreation Leisure
Divisions: Sports Centre
Depositing User: Ms. Juhaida Abd Rahim
Date Deposited: 08 May 2019 07:43
Last Modified: 08 May 2019 07:43
URI: http://eprints.um.edu.my/id/eprint/21173

Actions (login required)

View Item View Item