THE RELATIONSHIP BETWEEN DIETARY FIBER AND SLEEP QUALITY IN HEMODIALYSIS PATIENTS

Background and Aim: Current evidence showed that dietary fiber may have favorable effect in hemodialysis patients. However, there is no study regarding the association between fiber intake and sleep quality, a component of quality of life, in these patients. To determine association between fiber intake and sleep quality in hemodialysis patientsMethods: In this cross-sectional study, 168 patients with ≥1-year history of dialysis (at least 2 to 3 times per week) were selected based on the convenience sampling method. Dietary intake was assessed using a validated Food Frequency Questionnaire. Sleep quality was measured using the PSQI sleep quality questionnaire. Data reported as mean±SD.Results: In primary analysis, mean total fiber intake (19.54 ± 14.21) was not significantly correlated with sleep quality (r = -0.062, p = 0.44). Similarly, soluble fiber had no relation with sleep quality (r=0.077, p=0.34). In contrast, insoluble fiber had a significant association with better sleep quality (r= -0.173, p=0.03). After adjusting for confounders including gender, age, socioeconomic status, disease history and dialysis quality, a significant positive relationship was seen between insoluble fiber and better sleep quality (r = -0.169, p = 0.04). There was no significant relationship between total fiber and soluble fiber intake with sleep quality in multivariate adjusted model (total fiber: r = -0.009, p = 0.92, soluble fiber: r = 0.143, p= 0.09)Conclusion: A positive relation between insoluble fiber and better sleep quality was observed in hemodialysis patients. However, more studies should be conducted, especially regarding beneficial effects of dietary fibers and phosphorus homeostasis.

کلیدواژه ها:

Fiber ، Sleep quality ، Hemodialysis Patients