RESUMO
The Islamic precept of R implies important physiological modifications due to the hydric and dietetic restrictions along a whole month plus a day, all of which have a crucial repercussion over the physical and intellectual performance of Muslims, particularly in occidental societies, in which there is no hour readjustments for daily activities. Among the imposed modifications by Ramadan in daily habits, intermittent fasting along day and night causes adaptation mechanisms to optimize the energy consumption. The objective of this study was to analyze the metabolic-endocrine changes that happen during daily working hours, along the month of fasting in young subjects who have to continue their usual activities and sport training. Ten young muslim subjects, male, healthy, set to sport training, ages in between 18 and 25 who completed Ramadan. Plasma biochemical and hormonal parameters were analyzed in plasma, a week before Ramadan, in the first and fourth of the fasting month and a week after conclusion. During Ramadan, have been observed a drop of biochemical parameters along daytime, especially those related to glycemia, being these changes stronger in the first week. The concentration of cortisol found to be significantly high during the whole month as a consequence of adaptation to the change of circadian secretion rhythms. Ramadan obliges subject's organisms to readjust their endocrine and metabolic system in order to preserve the energetic efficiency during daytime. This auto control becomes more efficient as long as the month advances due to physiological adaptations.
Assuntos
Adaptação Fisiológica/fisiologia , Desempenho Atlético/fisiologia , Ingestão de Energia/fisiologia , Jejum/metabolismo , Islamismo , Adolescente , Adulto , Atletas , Jejum/fisiologia , Humanos , Masculino , Adulto JovemRESUMO
Fundamento: Los cambios de hábitos durante el Ramadán, obligan a importantes reajustes fisiológicos, para mantener la homeostasis. El objetivo del presente trabajo ha sido analizar el perfil secretor de gastrina durante el ayuno de Ramadán en un grupo de musulmanes voluntarios, en edad escolar (13 a 15 años).Método: La muestra estuvo constituida por17 varones sanos, sin problemas gastrointestinales previos, seleccionados al azar entre todos los alumnos voluntarios de centros de enseñanza secundaria de Ceuta que practican el ayuno del Ramadán. Los niveles hormonales de gastrina se determinaron mediante radioinmunoanálisis. Resultados: Nuestros resultados muestran una disminución significativa de los niveles de gastrina al avanzar el período de ayuno, alcanzando el día 21, cifras de 23,89 pmol/L en comparación con los 28,49 de la semana previa(p=0,006) y de los 28,13 de la primera semana de ayuno (p=0,015). Estos cambios pueden interpretarse como una respuesta homeostática de adaptación a las nuevas pautas de alimentación. Finalizado el tiempo de Ramadán, observamos un incremento en los niveles de gastrina que devuelve los niveles hormonales a 30,15pmol/L, similares a los encontrados las semanas previa y primera del ayuno. Conclusión: Estos resultados sugieren un perfil de secreción para la hormona dependiente de la ingesta, que requiere un tiempo de adaptación a la nueva situación (AU)
Background: The changes in habits during Ramadan result in significant physiological readjustments, in order to maintain homeostasis. The main objective of the present study was to analyze the gastrin secretion during Ramdan Fast in a young muslim group during the school period between 13 - 15 years old. Method: Sample size was integrated by 17healthy men, without digestive personal history, selected by a randomized program between all the muslim students of the High Schools from Ceuta that practise Ramadan fast. Gastrin levels were determined by radioimmuno analysis(RIA).Results: Gastrin levels tend to go down during the fast period and at the 21st the media is23,89 pmol/L comparing with 28,49 pmol/L of the previous week (p=0,006) and the levels of the 1st week (28,13 pmol/L; p=0,015). These changes can be interpreted like an homeostatic answer of adaptation to the new guidelines of feeding. When Ramadan Fast concludes, gastrin levels come up again to basal levels (30,15pmol/L).Conclusion: These results suggest a secretion profile for the dependent hormone of the ingestion, that requires a time from adaptation to the new situation (AU)
