The direct effects of Ramadan fasting on sports performance remain unclear due to contradictory results in the literature. Farooq et al. (
7) have linked pre-existing knowledge and beliefs in Muslim athletes to the effects of Ramadan fasting through knowledge acquired, as well as socio-cultural and religious influences from an early age. At the same time, the authors found that 30% of athletes gave incorrect answers about the effects of fasting on certain parameters, which makes them subjective to adapting to Ramadan fasting. In the present study, 82% of participants declared to be of agreement to strongly agree by mental preparation and a change of attitudes (65%) to face the difficulties caused by Ramadan fasting. Roy et al. (
26) highlight the important role of the socio-cultural and religious environment and they suggested that the closure of most restaurants in predominantly Muslim countries could be a major factor in the contextual adjustment to facilitate self-control. Eighty-four percent of the athletes in the present study said that they agreed and strongly agreed to try to be patient with changes in attitudes and routines. On the other hand, studies have associated an adequate mental management to fight against the constraints, in particular, fatigue at the change of time and the architecture of sleep, caused by the fast of Ramadan and this by improving their state of mood (
44).
In addition, a decrease in alertness and mood, which is correlated with an increase in central fatigue due to sleep loss and a reduction in energy intake, could influence mental performance and irritability during Ramadan, even during low-intensity physical activity (
17,
45). What has been reported by Roky et al. (
8) where they indicated that the major changes during the Ramadan fast are rather biological and behavioral. This perceived fatigue is, therefore, subjective because most participants of this study declared that they were mentally prepared to remain strong. This could be justified by an early adaptation and/or the existence of environmental, socio-cultural, and religious influencing factors since the participants come from a country of Muslim dominance. In contrast, Chamari et al. (
46) have shown that the increase in perceived fatigue and the modification of the architecture of sleep have no negative effect on cognitive function in cyclists. This would suggest a possible involvement of athletes in the process of self-regulation during the month of Ramadan. However, Boukhris et al. (
47) have demonstrated the absence of the intermittent fasting effect of Ramadan on fatigue and mental stress. In addition, Tian et al. (
48) show that during the fast of Ramadan the performances in cognitive functions requiring rapid and sustained responses were better in the morning than in the afternoon, which is not the case of the performances in precision measurements not dependent on speed where we see no change (
43,
48). On the other hand, we have integrated these different points brought by the literature on the scale of our proposed questionnaire in the different dimensions (Appendix 1 in Supplementary File).