Abstract
Aim. The aim of this study was to investigate the relationship between spiritual health and sleep quality in people with heart failure.
Background. The quality of sleep in patients with heart failure is unfavorable compared to healthy individuals. It is stated that in some societies, spirituality is related to mental health and sleep quality.
Method. In this descriptive correlational study, 207 people with heart failure, who were recruited in the study through convenience sampling method, were given demographic questionnaires, Pittsburgh sleep quality and Alison and Palutzian spiritual health questionnaires. Data were analyzed using descriptive and inferential statistics in SPSS V24.
Findings. The mean total score of sleep quality was 8.90±3.16; indicating that the sleep quality of people with heart failure was at an unfavorable level. The mean total score of spiritual health was 93.36±9.20; demonstrating that the level of spiritual health of the people with heart failure was moderately high. There was a statistically significant positive relationship between sleep quality and spiritual health (r=0.175, p=0.026).
Conclusion. People with heart failure who have higher spiritual health experience better sleep quality. It is recommended to pay attention to spiritual health as well as to the physical health of patients when planning caring programs for these people.

Abstract
Aim. The purpose of this study was to examine the health promoting behavior model based on spiritual health, social support and mental capital in people with cardiovascular disease.
Background. Cardiovascular disease affects various aspects of life, including physical, emotional, social and functional health, and one of the factors that affect the quality of life of people with cardiovascular disease is the health promoting behaviors.
Method. In this correlational study, path analysis model was used to examine hypotheses. The statistical population of this study consisted of all people with cardiovascular disease referred to medical centers in Qom in year 2020, out of which 200 people were selected by convenience sampling. Research measurement tools included Lutz Psychological Capital Questionnaire (2007), Zimet et al. Multidimensional Perceived Social Support Scale (1998), Palutzian et al. (1983) Spiritual Health Questionnaire and Walker et al. (1987) Health Promoting Behaviors Questionnaire. Data analysis was performed in AMOS.22 and SPSS.22 software using Pearson correlation method and path analysis model with.
Findings. The results showed that spiritual health (β=0.21, P<0.002) and social support (β= 0.17, P<0.013) had an effect on mental capital. Psychological capital also played a mediating role in the relationship between spiritual health and social support with health promoting behavior (RMSEA=0.067, AGFI=0.98).
Conclusion. It could be concluded that spiritual health, social support and psychological capital play an important role in health promoting behavior of people with cardiovascular disease. Therefore, in developing therapeutic programs for these patients, it is better to emphasize and pay attention to familial, psychological, religious, social and health factors.