Some sources engaged in stating the relationship between

Some sources engaged in stating the relationship between the incidence of sleep disorders, and fatigue and tiredness despite getting enough sleep, and also the relationship between sleep disorders and hypo-gonadotropism and eventually decrease in free Mouse Angiopoietin-2 / ANG2 / ANGPT2 Protein (His Tag) and the consequent decrease in sexual function and its related complications [2,5,6]. The results of the studies show that people who have trouble in sleeping for any reason and those who do not feel satisfied with their nightly sleep resulted from various chronic dieases such as apnea, have inferior sexual function compared to others [1,7]. However, there is not a consensus among researchers in this relation [8]. Despite considerable decrease in the mean hours of the normal sleep in recent years due to various reasons [9,10], especially in old ages [11,12], the results of the studies on the relationship between sleep disorders and sexual function are contradictory [8,13,14]. Hitherto no study has been conducted in this relation in Iran on the middle-aged men. So, this study was performed aiming at determining the state of sleep disorders and sexual dysfunction and its relation with aging in the men aged 45–75 years in Ilam located in the west of Iran.
Methods In this is cross-sectional study, 390 middle-aged and older men were studied from the late June to the late July 2011. After approval of Ethic Committee of Tabriz University of Medical Sciences, sampling was done through cluster randomization from Ilam–Iran. Given that this paper is a part of a study in which the lifestyle of the wives are examined too, 80 women residing in Ilam, aged 45–54 years in the statistics of 2006, were selected randomly with the cooperation of Iran Statistic Center. The address of these people was considered to be the head in each cluster, sampling was started from the cluster head and continued from right side to the point that 5 eligible people were accessed. 400 people were selected to participate in the study. Finally, 10 men were excluded because of the inadequacy of the number of subjects in the age groups, and 390 people were selected as the sample. The sample size was calculated by considering the power 0.9, α=0. 05, σ=22 [15]. The data were collected by a trained interviewer man through the interview. Going to their doors and ensuring that they had the criteria of the study, the interviewer completed the questionnaires. The subjects were assured that the gathered information would be confidential and that they could leave the study if they intend to. Written consent was obtained from all the samples. If the samples were not home at the two repetitive times of the interrogator׳s coming to their house, at the time that the subject was likely to be home, the next questionnaire would be completed. The questionnaires were anonymous and included demographic information and the questionnaire related to the assessment of sexual function of men (Brief sexualfunction inventory) and the questionnaire related to the evaluation of sleep disorders [16]. The demographic information questionnaire would examine some variables, including age, level of literacy, employment status, and income status, being affected by chronic heart diseases, hypertension, diabetes, and past record of prostate surgery. The questionnaire of examining sleep disorders was designed by the authors based on the national guideline of training manual for the integrated care for the old and the middle-aged [17]. This questionnaire generally examines four types of sleep related disorders, including: problem in falling asleep, frequent nocturnal awakening, waking up in the early hours in the morning, and fatigue and tiredness despite getting enough sleep.
Results Totally, sleep-related problems were reported by 34.6% of the men (some participants reported more than one sleep related problem). The most frequent sleep problem reported by the participants was fatigue and tiredness despite getting enough sleep (Table 1).