Ramadan Fasting and the Propensity for Learning: Is There a Cause for Concern?
ABSTRACT The literature indicates that glucose deprivation, dehydration, decreased sleep quality and quantity, and mood changes, independently and adversely can influence cognitive functions and…
The effects of fasting for a single day and during Ramadan upon performance
Results indicated that Ramadan was associated with negative effects upon a wide range of variables, including rising urine daytime osmolality, subjective estimates of amounts of activities actually performed and those wished to be done, and metabolic and subjective responses to a short bout of exercise.
Effects of Length of Time of Fasting upon Subjective and Objective Variables When Controlling Sleep, Food and Fluid Intakes
Findings indicate that fasting was responsible for many of the changes previously observed, though some effect of sleep loss, particularly if occurring on successive days (as would occur in Ramadan) cannot be excluded.
Ramadan and Sport: Minimizing Effects Upon the Observant Athlete
- MedicineSports Medicine
The intermittent fasting of Ramadan could affect various aspects of body physiology and biochemistry important to athletic success, andLogical measures to minimize the effects of Ramadan include the optimization of mood state, maintenance of training, minimization of sleep loss, appropriate adjustments of diet, and the monitoring of competitors for chronic dehydration.
Effects of Intermittent Fasting, Caloric Restriction, and Ramadan Intermittent Fasting on Cognitive Performance at Rest and During Exercise in Adults
- PsychologySports Medicine
The aim of this review was to highlight the potent effects of intermittent fasting on the cognitive performance of athletes at rest and during exercise. Exercise interacts with dietary factors and…
Chronobiological aspects of food intake and metabolism and their relevance on energy balance and weight regulation
- MedicineObesity reviews : an official journal of the International Association for the Study of Obesity
The results show that a chronic desynchronization of the circadian system like in shift work and also sleep deprivation can favour the development of obesity, and a higher meal frequency and regular eating pattern seem to be more advantageous than taking the meals irregularly and seldom.
Changes in sleep, mood and subjective and objective responses to physical performance during the daytime in Ramadan
Nocturnal sleep and daytime dehydration, activities and sleepiness, perceived exertion when exercise was undertaken, lactate metabolism and responses to physical activity all changed during Ramadan, and there were compensatory changes after sunset.
Objective assessment of drowsiness and reaction time during intermittent Ramadan fasting in young men: a case-crossover study
- MedicineBehavioral and Brain Functions
Under controlled conditions of fixed light/dark exposure, caloric intake, sleep/wake schedule and sleep quality, the Islamic intermittent fasting has no impact on drowsiness and vigilance as measured by the JDS, total blink duration and MRT.
Effects of Ramadan fasting on substrate oxidation, physiological and perceptual responses during submaximal intensity running in active men
- PsychologySport Sciences for Health
Ramadan fasting has no major impact on substrate utilization and is not an effective ‘fat-burning’ enhancing activity to lose fat mass.
The Impact of Ramadan Observance upon Athletic Performance
Empirical data on the extent of changes in anaerobic effort, endurance performance and muscle strength might be anticipated from the decrease in muscle glycogen and body fluid reserves are considered, suggesting potential nutritional and behavioral tactics for minimizing such effects in the Muslim competitor.
SHOWING 1-10 OF 79 REFERENCES
Physiological and Chronobiological Changes during Ramadan Intermittent Fasting
- MedicineAnnals of Nutrition and Metabolism
The major changes during Ramadan fasting are chronobiological and behavioral, which could be responsible for the high incidence of road traffic accidents and the reduction of working hours during the month of Ramadan.
Ramadan fasting alters endocrine and neuroendocrine circadian patterns. Meal-time as a synchronizer in humans?
- Medicine, BiologyLife sciences
Chronobiology and meal times: internal and external factors
- BiologyBritish Journal of Nutrition
Although homeostatic mechanisms remain of utmost importance, rhythmic changes are present also, and food intake, appetite, digestion and metabolism have been shown to illustrate these principles.
Interactions between leptin, neuropeptide-Y and insulin with chronic diurnal fasting during Ramadan
- MedicineAnnals of Saudi medicine
Long-term fasting with interrupted nocturnal eating is associated with significant elevations in serum leptin and insulin and reduction in serum neuropeptide-Y, which appears to be mediated independently of leptin or insulin during this type of fasting.
Aging, rhythms of physical performance, and adjustment to changes in the sleep-activity cycle.
- MedicineOccupational and environmental medicine
People habituated to night work seem to have developed mechanisms which allow them to cope with disruptions to lifestyle and the endogenous body clock, and Elderly people are more suited to phase advances, as occur in morning workshifts, than to phase delays such as nocturnal work.
Response of circulating leptin to Ramadan daytime fasting: a circadian study.
- MedicineThe British journal of nutrition
Serum concentrations of leptin were measured around the clock at 4-hourly intervals before the beginning of Ramadan and on the twenty-third day of Ramadan daytime fasting in ten male subjects keeping the same usual activity pattern and general synchronisation in both situations.
Circadian Variation in Sports Performance
- PsychologySports medicine
Although athletes show all the symptoms of ‘jet lag’ (increased fatigue, disturbed sleep and circadian rhythms), more research work is needed to identify the effects of transmeridian travel on the actual performances of elite sports competitors.
[Circadian rhythm of cortisol and its responsiveness to ACTH during Ramadan].
- Medicine, BiologyAnnales d'endocrinologie
Changes in eating and sleeping schedule was found to reduce morning cortisol level and raise the evening cortisol level during Ramadan, and Adrenal sensitiveness to corticotropin stimulation did not appear to be impaired during Ramadan.
The Relevance of Melatonin to Sports Medicine and Science
- PsychologySports medicine
The hypothesis that the hypothermic effects of melatonin lead to improved endurance performance in hot environments is not supported by evidence from studies involving military recruits who exercised at relatively low intensities, and no research group has examined such a hypothesis with athletes as study participants and with the associated more intense levels of exercise.
Appetite Changes Under Free-living Conditions During Ramadan Fasting
During the fasting month of Ramadan, Muslims abstain from food and drink from sunrise until sunset. This change of eating pattern provides an opportunity to investigate factors controlling hunger and…