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Background  The prevalence of overactive bladder syndrome (OAB) increases with age. Sleep disturbances in elderly individuals with OAB is a common problem. The purpose of this study was to examine the effects of a biofeedback-based sleep improvement (BBSI) program on urinary symptoms and sleep patterns in elderly Korean women with OAB.    Methods  A non-equivalent control group pre−/post-test design was used. Elderly women with OAB were assigned to an intervention group ( n  = 20) or a control group ( n  = 18). The BBSI program was implemented in the intervention group for 12 weeks, while two educational sessions of general sleep hygiene and lifestyle modification were provided to the control group. Using SPSS 23.0, the data were analyzed by descriptive analysis using the chi-square test, Fisher’s exact test, Mann-Whitney test, and Wilcoxon test.    Results  After the 12-week BBSI program, significant improvements were found in the intervention group’s the square root of the mean squared differences of successive R-R intervals ( p  = 0.025), low frequency/high frequency ratio ( p  = 0.006), and epinephrine ( p  = 0.039). We also observed a significant difference in urinary symptoms, sleep efficiency, wake after sleep onset, number of awakenings, and number of awakenings within 3 h after sleep onset ( p  < 0.001,  p  = 0.004,  p  = 0.001,  p  = 0.001, and  p  = 0.048, respectively). However, no significant changes were found in these variables in the control group.    Conclusions  The BBSI program effectively improved urinary symptoms and sleep patterns of elderly Korean women with OAB. Further longitudinal research is required to investigate the sustainability and effects of the BBSI program.    Trial registration   KCT0003882 . Date of registration: 02/05/2019. Retrospectively registered.

Effects of biofeedback-based sleep improvement program on urinary symptoms and sleep patterns of elderly Korean women with overactive bladder syndrome