Simulation and Test of the Balance Ability for the Elderly Based on Morlet Wavelet Analysis

Author(s):  
Guoquan Liu ◽  
Yuezhong Li ◽  
Yiming Chen ◽  
Zehui Lin ◽  
Xinyi Zheng ◽  
...  
Geriatrics ◽  
2020 ◽  
Vol 6 (1) ◽  
pp. 1
Author(s):  
Kyeongjin Lee

Falls are the leading cause of injury and injury-related death in the elderly. This study evaluated the effect of virtual reality gait training (VRGT) with non-motorized treadmill on balance and gait ability of elderly individuals who had experienced a fall. Fifty-six elderly individuals living in local communities participated in this study. Subjects who met the selection criteria were randomly divided into a VRGT group (n = 28) and a control group (n = 28). The VRGT group received VRGT with non-motorized treadmill for 50 min a day for 4 weeks and 5 days a week. The control group received non-motorized treadmill gait training without virtual reality for the same amount of time as the VRGT group. Before and after the training, the one-leg-standing test, Berg Balance Scale, Functional Reach test, and Timed Up and Go test were used to assess balance ability, and the gait analyzer system was used to evaluate the improvement in gait spatiotemporal parameters. In the VRGT group, the balance ability variable showed a significant decrease in the one-leg-standing test and a significant improvement in the Timed Up and Go test. With respect to spatiotemporal gait parameters, velocity and step width decreased significantly in the VRGT group (p < 0.05), and stride length and step length were significantly improved in the VRGT group (p < 0.05). VRGT with non-motorized treadmill has been shown to improve balance and gait ability in the elderly. This study is expected to provide basic data on exercise programs for the elderly to prevent falls.


Author(s):  
Mingan Zhu ◽  
Bihang Fan

Warming has strongly influenced the quantity and variability of natural disasters around the globe. This study aims to characterize the varying patterns between rising temperatures and climate-related natural disasters in China from 1951 to 2010. We examined the overall trend in the patterns of an 11-year cycle, and climate-related natural disaster responses to periods of rising and dropping temperature. We used Morlet wavelet analysis to determine the length of a temperature cycle period, and the arc elasticity coefficient to assess the number of climate-related natural disasters in response to the changing temperature. We found that: (1) the overall relationship between temperature and the number of climate-related natural disasters was positive; (2) however, on the cycle level, the pattern of climate-related natural disasters was found to be independent of temperature variation; (3) on the rise-drop level, temperature increases were associated with declines in the number of climate-related natural disasters. Moreover, as temperature decreased, the number of climate-related natural disasters increased substantially, such that temperature had a more considerable influence on the quantity of climate-related natural disasters during the temperature-drop period. Findings in this study can help enhance the dissemination of warning and mitigation efforts to combat natural disasters in the changing climate.


2020 ◽  
Vol 22 (3) ◽  
pp. 349-358
Author(s):  
Ji-Su Pack ◽  
Koon-Ja Lee ◽  
Jeong-Lae Kim ◽  
Se-Hoon Choi ◽  
Hyun-Sung Leem

2008 ◽  
Vol 16 (4) ◽  
pp. 381-392 ◽  
Author(s):  
Koichi Kaneda ◽  
Daisuke Sato ◽  
Hitoshi Wakabayashi ◽  
Atsuko Hanai ◽  
Takeo Nomura

This study compared the effects of 2 types of water exercise programs on balance ability in the elderly. Thirty healthy elderly persons (60.7 ± 4.1 yr) were randomly assigned to a deep-water-running exercise (DWRE,n= 15) group or a normal water exercise (NWE,n= 15) group. The participants completed a twice-weekly water exercise intervention for 12 wk. Exercise sessions comprised a 10-min warm-up on land, 20 min of water-walking exercise, 30 min of water exercise while separated into NWE and DWRE, a 10-min rest on land, and 10 min of recreation and relaxation in water. Postural-sway distance and tandem-walking time were decreased significantly in DWRE. Postural-sway area was decreased significantly in NWE. In both groups, simple reaction times were significantly decreased. The findings of this study show that a water exercise program including deep-water running is much better than normal water exercise for improving dynamic balance ability in the elderly.


2015 ◽  
Vol 26 (2-1) ◽  
pp. 83 ◽  
Author(s):  
Kou-Cheng Chen ◽  
Jeen-Hwa Wang ◽  
Kwang-Hee Kim ◽  
Win-Gee Huang ◽  
Kao-Hao Chang ◽  
...  

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