The Effects of Fluid and Food Restriction on Physical and Mental Performance

Date

2020-2

Type

Conference paper

Conference title

World A cademy of Science, Engineering, and Technology, WASET

Issue

Vol. 5 No. 3

Author(s)

Khaled Jebril Mustafa Abuzayan
Hadhom Mohamed Mansoor Alabed

Pages

1196 - 1212

Abstract

Abstract—Eighteen healthy young male subjects (age 20-25) were investigated on two weekly occasions. Control values were obtained from the normal trial in desired. Subjects were required to fill out a questionnaire five times per day – before sunrise (about 08:00h), 12:00 h, 15:00 h, 18:00 h and after sunset (about 19:00) upon retiring. The questionnaire requested information about whether or not subjects had slept, eaten or drunk, and the reasons for these choices. Subjects were also asked to provide how much physical, mental and social activity they had participated in, how tired they felt and how able they felt to perform physical and mental tasks. The analysis compared the mean of the fasting day with the mean of the control day. During fasting conditions, fluid and food intake during daylight hours (between sunrise – sunset) was essentially zero, this was compensated especially after sunset but not so before sunrise. Sleep was altered in this study and which subjects were able to eat, drink and sleep as and when they desired to, fasting values were obtained from the fasting trial in which subjected abstained from eating and drinking during daylight hours but were allowed sleep as and when it was therefore daytime sleepiness was increased. The amounts of physical, mental and social activity performed during the daytime decreased in the fasting day, however perceived ability to perform physical and mental was slightly lower than actual levels performed. To conclude daytime fasting, produced many changes to the aspects of subjects’ daily routine, including sleep, food and fluid intake and performance both completed and perceived. Keywords— Fasting, Ramadan, Physical Performance, Mental Performance, Sleeping

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