BackgroundAdults with sedentary lifestyles seem to face a higher risk of falling in their later years. Several causes, such as impairment of strength, coordination, and cognitive function, influence worsening health conditions, including balancing ability. Many modalities can be applied to improve the balance function and prevent falling. Several studies have also recorded the effects of balance training in elderly adults for fall prevention. Accordingly, the aim of this study is to define the effect of virtual reality-based balance training on motor learning and postural control abilities in healthy adults.MethodsFor this study, ten subjects were randomly allocated into either the conventional exercise (CON) or the virtual reality (VR) group. The CON group underwent physical balance training, while the VR group used the virtual reality system 4 weeks. In the VR group, the scores from three game modes were utilized to describe the effect of motor learning and define the learning curves that were derived with the power law function. Wilcoxon Signed Ranks Test was performed to analyze the postural control in five standing tasks, and data were collected with the help of a force plate.ResultsThe average score was used to describe the effect of motor learning by deriving the mathematical models for determining the learning curve. Additionally, the models were classified into two exponential functions that relied on the aim and requirement skills. A negative exponential function was observed in the game mode, which requires the cognitive-motor function. In contrast, a positive exponential function was found in the game with use of only the motor skill. Moreover, this curve and its model were also used to describe the effect of learning in the long term and the ratio of difficulty in each game. In the balance performance, there was a significant decrease in the center of pressure parameters in the VR group, while in the CON group, there was a significant increase in the parameters during some foot placements, especially in the medio-lateral direction.ConclusionThe proposed VR-based training relies on the effect of motor learning in long-term training though different kinds of task training. In postural analysis, both exercise programs are emphasized to improve the balance ability in healthy adults. However, the virtual reality system can promote better outcomes to improve postural control post exercising.Trial registration Retrospectively registered on 25 April 2018. Trial number TCTR20180430005Electronic supplementary materialThe online version of this article (10.1186/s12938-018-0550-0) contains supplementary material, which is available to authorized users.
This study applied the posturography framework on five static standing tasks from the Berg Balance Scale (BBS). Thirteen participants were recruited and the trajectory data of the center of pressure (CoP) were collected. To analyze the postural performance, two approaches were taken: the scores from the BBS and statistical analysis. For the statistical analysis, Spearman’s method was applied to determine the correlation of CoP parameters. The results revealed the correlations between CoP parameters in the anterior-posterior (AP) and medial-lateral (ML) directions, and on the statokinesgram (SK) plane for all tasks. To obtain the in-depth detail between normal weight and overweight groups, the differences in the postural control mechanism were defined by correlations of CoP parameters. The Mann-Whitney U test was conducted to define the difference in postural control in terms of difference in weight gain and standing task factors, while Cohen’s d was used to investigate the influence of the difference in standing tasks and weight gain on postural control. The results showed that the correlations of CoP parameters could distinguish the balance impairment in the overweight condition from the normal postural control. Otherwise, the scores of BBS, the Mann-Whitney U test and Cohen’s d did not separate this slightly compensatory movement during equilibrium. Therefore, the correlations of CoP parameters could provide more information to analyze the balance function in each individual, especially in terms of slight compensation.
Purpose Exercise training has been shown to be an effective and integral component of non-pharmacological intervention for the control of blood pressure. The purpose of this paper is to compare the effectiveness of a supervised modified exercise program of moderate-intensity exercise for one hour per week including the use of a pedometer, and with the use of a pedometer alone without additional exercise in reducing blood pressure. Design/methodology/approach The study was a randomized control trial, with an experimental group of 30 people and a control group of 26 people. Participants were males and females aged 30-65 years with pre- to mild hypertension, and who were not receiving any drugs for the treatment of hypertension. Participants of the experimental group were assigned to a fitness program with supervised exercise once a week at the Golden Jubilee Medical Fitness Center, given access to a pedometer, and provided with health education. Participants in the control group were assigned to use a pedometer only. All experimental and control group members participated in the study for three months, as well as a follow-up at the third and sixth month. Findings Comparison of the experimental and control groups at the first, third, and sixth month, using repeated measures analysis found that interaction effect groups and times were significantly different for mean systolic blood pressure (SBP), body mass index (BMI), hip circumference (HC), and high-density lipoprotein (HDL) (p<0.05). Mean SBP, diastolic blood pressure (DBP), BMI, waist circumference (WC), HC, and low-density lipoprotein (LDL) within groups were significantly different (p<0.05). Mean WC, cholesterol, LDL, and triglyceride between groups were significantly different (p<0.05). Both groups had SBP improved at the third and sixth month when compared with baseline data. Mean HDL increased in the experimental group and decreased in the control group. Multiple regression analysis showed that both groups were not statistically different after intervention, SBP was reduced in the experimental group when compared to the control group. However, at six months, members in the experimental group reported spending less time sitting or reclining on a typical day than members of the control group. Originality/value A supervised one-time per week fitness program combined with pedometer and pedometer alone were not different in reducing blood pressure, as both groups showed decreases in blood pressure. However, the group with the supervised exercise program tended to change sedentary behaviors in the longer term compared to those who used the pedometer alone.
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