Effects of virtual reality versus conventional balance training on balance of the elderly.

OBJECTIVE: The aging population is growing in the world, and the reduction in physical function caused by this is an important issue that, particularly, causes a disorder of balance and an increased risk of falling. This study aimed at the comparison between the effects of virtual reality training (VRT) and Conventional balance training (CBT) on the balance of the elderly. METHODS: The present study was conducted on 36 elderly (men and women) who are living in nursing homes. Participants were randomly divided into three groups: virtual reality training (6 males, 6 females; age = 66.5 ± 3.8 years), Conventional balance training (6 males, 6 females; age = 67.5 ± 3.1 years), and control (5 males, 7 females; age = 66.7 ± 3.2 years). Each group participated in a 60-min session, 3 times per week, for 9 weeks. To assess the participants' balance, the balance tests were used on single-leg stance (SLS) with open and closed eyes, Functional reach test (FRT), Timed up and Go Test (TUG), and Fullerton Advance Balance Scale (FABS). Data analysis was done using paired t-test and analysis of covariance by SPSS software version 24 at the significant level (P = 0.05). RESULTS: In both groups (VRT, CBT), SLS with open and closed eyes, FRT, TUG, and FABS were significantly improved (P˂0.05). After the intervention, changes in both groups were similar (P > 0.05), which indicates that neither VRT and CBT training methods were superior to the other. CONCLUSION: According to the results of this study, it seems that a virtual reality training program can be used as a new training method to improve the elderly's balance in daily programs of nursing homes.

The Effects of Caffeine Supplements on Exercise-Induced Oxidative Damages.

BACKGROUND: There is an interaction between oxidative equilibrium and anti-oxidants in oxidative stress. Therefore, oxidative stress has an effect on intercellular oxidation and causes atrophy and is an underlying factor in many diseases. OBJECTIVES: The aim of this study was to investigate the effect of running downhill and the short-term effect of caffeine supplementation on oxidative stress in non-athletic men. PATIENTS AND METHODS: Twenty men, aged 25 - 28 years, from Tabriz, Iran were been selected and divided in two homogeneous groups of 10 men: the supplementation group and the placebo group. In the next stage, groups received caffeine supplementation (caffeine capsules at a dose of 5 mg/kg of body weight daily for 14 days) or placebo (5 mg/kg of dextrose during supplementation) and ran downhill (30 minutes of treadmill running with a slope of -10 degrees with 65% maximal oxygen consumption); blood sampling was also performed. RESULTS: Anti-oxidant capacity by the ferric reducing ability of plasma (FRAP) techniques and serum malondialdehyde (MDA) were measured by the thiobarbituric acid (TBA) method, while the total number of thiol molecules (TTM) with Hu and DNA damage was evaluated using ELISA. CONCLUSIONS: The results of this study indicated that running downhill caused significant changes in all measured parameters, but the short-term caffeine supplementation did not have a significant effect on the indices of oxidative stress or DNA damage measured.