جستجوی مقالات مرتبط با کلیدواژه "زمان واکنش انتخابی" در نشریات گروه "پزشکی"

Falls have dangerous consequences, high prevalence, long-term effects, and significant costs among the elderly. The present study aimed at determining the effect of resistance and hydrotherapic exercises and on the balance and reaction time in the elderly with mild cognitive impairment.

The present study was a quasi-experimental pretest-posttest one with a control group. From among women with mild cognitive impairment referring to medical centers in Kermanshah in the spring of 2019, as many as 30 people were selected by using random convenience sampling. They were then randomly assigned into two groups i.e. experimental and a control (10 samples in each group). The experimental groups practiced for 8 weeks (3 sessions a week, each session lasting 40 minutes). Static balance was measured by using with both open and closed eyes and applying the Sharpened Romberg Test (SRT) and dynamic balance was measured by the Timed Up and Go Test(TUG) before and after the training period. Simple and selective reaction times were measured as well. The data were analyzed by analysis of covariance and paired t-test.

The difference between pre-test and post-test scores was not significant for the variables of static balance with open eyes, dynamic balance and simple reaction time. The difference between these scores was significant for Sharpened Romberg Test with closed eye; static balance and evaluation of selective reaction time was significant (p < 0.05). There was a significant difference between post-test and pre-test scores (except for dynamic balance) in the intervention groups (p < 0.05). There was no significant difference in the effectiveness of treatment methods.

Given the effectiveness of resistance exercises and hydrotherapy, these methods can be used as effective therapies by physiotherapists to improve the balance and selective reaction time among the elderly suffering from mild cognitive impairment.

One of the most common complications of diabetes peripheral neuropathy (DPN) is the loss of balance, postural control disorder and falling down. Therefore, the purpose of the present study was to compare the effect of resistance and aquatic exercises on balance in DPN patients in 2019, in the Shahbazi pool, Kermanshah, Iran.

This randomized clinical trial study was conducted on 30 women inflicted with DPN who referred to Diabetes Research Center in Kermanshah. The subjects were selected through convenience sampling method and were randomly divided into three groups, including aquatic exercises (n=10), resistance exercises (n=10), and control (n=10). Resistance and aquatic exercise groups had a training program of 8 weeks which included 40-minute sessions three times a week. The static and dynamic balance, simple reaction time, and choice reaction time of the subjects were evaluated before and after the exercises. Finally, ANCOVA and paired t-test were used for the data analysis. A p-value of less than 0.5 was considered statistically significant.

Both resistance and aquatic exercises resulted in improvement regarding simple reaction time, choice reaction time, and static and dynamic balance, compared to the control group (P<0.001). Aquatic exercise protocol resulted in significant improvement in static balance with the eyes closed (P<0.001) and choice reaction time (P=0.001), compared to the resistance and control groups.

Based on the results, it seems that aquatic exercises are more effective regarding balance and simple and choice reaction time in comparison to resistance exercises, in DPN patients

Traffic noise is one of the most important environmental pollutants. World health organization has determined the health effects of community noise including cognitive performance disorders. The aim of this research is the study of effects of road traffic noise on peripheral perception and choice reaction time performance drivers. thirty and five students from the faculty of health, Tehran University of medical sciences (males), participated in the study. Peripheral Perception and Reaction time tests from Vienna test system package in the case of exposure to traffic and silent conditions performed. The main variables of this research were field of vision, tracking deviation, incorrect reactions, omitted reactions, mean mental reaction time and mean motor time. Road traffic noise was recorded from Main Street of Tehran by voice recorder Sony ICD MAX20, and was played in an acoustic room. comparison of result of Peripheral Perception in after exposure to traffic noise showed that despite slight difference in field of vision (P=0.85), tracking deviation (P=0.59), incorrect reaction (P=0.42) and omitted reactions (P=0.57), but were not statistically significant. Also in mean mental reaction time (P=0.47) and mean motor time (P=0.49), no significant differences were observed. result of this study show that noise traffic in Peripheral Perception and choice reaction time variables were not affected.

The aim of present study, was the comparison of effect of two methods of aerobic training on simple and choice reaction time in inactive elderly mens. Methods & Materials: 37 people with aged over 60 who were physically healthy, after pretest randomly divided into three groups: 1) walking or running Aerobic exercise groups(n = 12), 2) training bike rides group(n=13) and 3)control group (n=12). Then groups 1 and 2, participated in experimental study that was 8 weeks, 3 sessions per week (one day of rest in between each two-session training) and each session 45 minutes in walking or jogging aerobic training and bike aerobic training with 60 percent of maximum heart rate intensity. Group 3 (control) during the project, to be paid their daily activities and did not perform certain exercise training. After the training period, all subjects participated in the posttest session. simple and choice reaction time was measured from the electrical device. to examine the effect of exercise on the dependent variables and differences between groups, one-way covariance analysis (ANCOVA) was used.

findings showed that both exercise training programs in experimental groups in research, compared with control group significantly improved simple and choice reaction time of subjects. Also The results showed that there is no significant difference between two experimental groups of research in progress simple and choice reaction time test.

According to the The results, suggest that educators, organizations and institutions that deal with the elderly, use The bike and walking exercise to reduce risk of fall in them.