درخت حوزه‌های تخصصی

The present study aimed to compare the effects of physical, cognitive and combined rehabilitation on improving working memory and cognitive flexibility of the elderly living in the nursing home. This quasi-experimental study was carried out with a pretest-posttest design in four groups with the control group. The statistical population consisted of all elderly residents of a nursing home in Tehran. 48 people were selected randomly and divided into four groups (three experimental groups and one control group). For the experimental groups, intervention programs, including physical, cognitive, and combined rehabilitation, were conducted in three sessions of one hour each week for two months. The data were collected using a working memory capacity scale and a cognitive flexibility inventory (CFI). Data was analyzed using a one-way analysis of covariance (ANCOVA) and Bonferroni post hoc test using SPSS software version 22. The results showed that all three types of rehabilitation programs have a significant effect on improving the working memory and cognitive flexibility of the elderly (P <0.001). Also, the mean of the groups in the pre-test and post-test stages showed that among the three programs, the combined rehabilitation program had more efficacy in improving the working memory and cognitive flexibility of the elderly and there was no difference between the two types of physical and cognitive rehabilitation programs (P> 0.001) According to the findings, combined rehabilitation programs can be effective in improving the working memory and cognitive flexibility due to the focus on both physical and cognitive aspects.

This study attempted to investigate the effect of over-learning and off-line different periods on stabilization-based consolidation process and proactive interference in explicit motor memory. Previous experiences can affect future performance. However, it is not clear how much exercise is needed to stimulate these effects, and what is the best offline period between workouts to prevent interference? In this research, the performance of 40 female students, who were between 20-30 years old and had been called to attend in the test voluntarily, was studied in two offline Periods of 5 minutes and 24 hours between the first (forehand) and the second (backhand) strokes. Data were analyzed using a variance analysis test with repeated measurement tests and a Tukey follow-up test. Two main findings emerged from the study. Firstly, it was determined that offline period (5 minutes and 24 hours) are not effective on the learning of the second task. The second finding was that overlearning performed consolidation in both of the offline Periods (24 hours and 5 minutes) and the learning of backhand stroke became resistant to anterograde interference. These results suggest that learning can play an important role in explicit motor memory, but offline period cannot make learning resistant to interference.