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Effect of rehabilitation robots with routine rehabilitation training on walking function after stroke

Zhaoxiang MENG ; Xuehan SANG ; Jibing WANG

Military Medical Sciences.2013;(11):854-855,860. doi:10.7644/j.issn.1674-9960.2013.11.013

Objectives To observe the effect of rehabilitation robots with routine rehabilitation training on walking func -tion after stroke .Methods Sixty patients with stroke were randomly divided into treatment group and control group , 30 ca-ses in each group .The control group received routine rehabilitation training while the treatment group received routine reha -bilitation training by rehabilitation robots .The lower extremity functions ,balance and walking ability were assessed with a simplified Fugl-Meyer Assessment(FMA) and using the Berg Balance Scale (BBS) before treatment and after 12 weeks. Results Before treatment , neither the treatment group nor the control group showed any statistically significant difference in terms of FMA and BBS results (P>0.05).After 12 weeks′training, both groups showed significant improvement in terms of FMA and BBS results(P<0.05).The treatment group showed significantly better improvement in lower extremity function, balance and walking function than the control group (P<0.05).Conclusion Rehabilitation robots can signifi-cantly improve walking function in patients after stroke .

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Change in ventricular repolarization among healthy young males exposed to high altitude

Baida XU ; Wei LU ; Jie YU ; Jun QIN ; Jihang ZHANG ; Shuangfei LI ; Lan HUANG

Military Medical Sciences.2014;(4):259-261,280. doi:10.7644/j.issn.1674-9960.2014.04.006

Objective To investigate the change in ventricular repolarization at different altitudes and time courses among healthy young males .Methods A total of 143 healthy young men living on the plains were randomly selected as subjects.Their change in relative parameters of ventricular repolarization was measured by the same person at 500 m above sea level,24 hours their ascent to the plateau at an altitude of 3700 m was,after one week′s acclimatization on the 4400 m plateau and after 50 days acclimatization on the 4400 m plateau.Results Compared with 500 m,at 3700 m above sea level in 24 hours and after one week′s acclimatization on the 4400 m plateau,the heart rate(HR),systolic blood pressure(SBP), diastolic blood pressure(DBP), heart rate-corrected-QT (QTc)interval and heart rate-corrected T-peak to T-end (TpTec) on V3 lead were significantly increased(P<0.05).while oxygen saturation, QT interval,T-peak toT-end(TpTe)interval on V3 lead were significantly decreased ( P<0.05) .Compared with 500 m, oxygen saturation significantly decreased ( P<0.05),while SBP,DBP,QT interval,QTc interval,TpTe interval,TpTec interval did not change significantly (P>0.05) after 50 days acclimatization on the 4400 m plateau.Conclusion The ventricular repolarization duration of these young healthy men was significantly increased when they rapidly ascentded to high altitude .With prolonging residence at high alti-tude,the ventricular repolarization duration gradually returned to the level on the plains ,suggesting that the the ventricular repolarization duration will be restored to its level on the sea level by the adaptation and adjustment mechanism of the body .

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Design of fuzzy PID control algorithm and simulink simulation for temperature control system of wave bioreactors

Liangzhe LI ; Feng CHEN ; Guang ZHANG ; Jianjun SUN ; Ming YU ; Chunchen WANG ; Zhengyang DONG ; Taihu WU

Military Medical Sciences.2016;40(10):824-828. doi:10.7644/j.issn.1674-9960.2016.10.012

Objective To design a temperature control strategy for wave bioreactors.Methods According to the requirements of temperature control precision and response speed of wave bioreactors,the traditional PID control method was combined with fuzzy control method which was used to adjust the parameters of the PID control in real time online in order to strengthen the ability of the temperature control strategy to regulate temperature.Results A fuzzy PID controller was completed and simulation results were compared with the traditional PID controller.Conclusion The fuzzy PID control method has a smaller overshoot and shorter stability than the traditional one, so it has a higher temperature control performance.

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Medical identification of lumbar spondylolysis among flight crew between PLAAF and USAF:an empirical study

Chaofan YUAN ; Huiping SHI ; Zhikang ZOU ; Zhaoyi CHEN ; Jun ZHENG

Military Medical Sciences.2016;40(10):787-789. doi:10.7644/j.issn.1674-9960.2016.10.003

Objective To improve the selection of flying cadets of the Air Force of People′s Liberation Army of China ( PLAAF) by analyzing the differences of medical identification of lumbar spondylolysis between PLAAF and the US Air Force ( USAF) .Methods Flight crew who had been checked for lumbar spondylolysis during hospitalization at the Air Force General Hospital between 2013 and 2015 were chosen.The results of their medical identification were compaired according to PLAAF and USAF Medical Standards Directory, and their differences and possible reasons were analyzed accordingly.Results The qualified rate of PLAAF was about 85%, which was very close to the standards of USAF, but the difference was not of any statistical significance(P>0.05).Conclusion The standards of our medical identification of lumbar spondylolysis was similar to those of USAF, suggesting that the selection of flying cadets can be improved.

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System evaluation of health status and intervention in US Armed Forces

Shali XIE ; Hui LIN ; Yi MENG ; Yang YANG ; Xiao MA

Military Medical Sciences.2016;40(10):777-781. doi:10.7644/j.issn.1674-9960.2016.10.001

Objective To systematically evaluate the health status and intervention measures in the US Armed Forces, and to provide reference for the development of health promotion strategies in our army.Methods The PubMed, Medline, Springer, Elservier, HighWire and CNKI Database were searched electronically, with assigned search strategy for American military health status and intervention measures published from Jan.1997 to Dec.2015.Results There were 25 of pieces literature about training injury, low back pain, posttraumatic stress disorder, depression and cardiovascular disease that were screened.Conclusion The main health problems facing the US Armed Forces and the focus of the intervention measures involved training injuries, low back pain, mental illness and cardiovascular disease.Protection of military health is shifting from the single disease prevention to diversified comprehensive maintenance in the new era.

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Research progress in benchmark dose in risk assessment of long-team exposure toxicity

Hui PENG ; Qiaofang LI ; Jian YIN ; Tingfen ZHANG ; Jiabin GUO ; Yimei WANG ; Shuangqing PENG

Military Medical Sciences.2016;40(10):851-855. doi:10.7644/j.issn.1674-9960.2016.10.018

The purpose of risk assessment is to evaluate the permissible exposure level under specific risk factors.To extrapolate the human acceptable daily intake (ADI) and/or reference dose (RfD), the traditional method uses the no-observed-adverse-effect level ( NOAEL ) to quantify toxicity after being divided by uncertainty factor.There are many limitations with NOAEL method in safety evaluation,for it relies too much on experimental design.Benchmark dose ( BMD) approach is a more reliable method with many advantages.BMD approach and its analysis software, the advantages of BMD over NOAEL, the application and methodological perfection in risk assessment of long-team exposure toxicity are presented in this review.

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Research progress in Clostridium difficile tcdC gene

Jianxia WANG ; Hongwei WANG ; Xiaoyan FENG ; Dazhi JIN

Military Medical Sciences.2016;40(10):847-850. doi:10.7644/j.issn.1674-9960.2016.10.017

TcdA and B toxins secreted by Clostridium difficile( CD) are two important causes of diseases in organisms. The expression of tcdA and tcdB genes is regulated by a few factors located in the pathogenicity locus ( PaLoc) .Studies have indicated that the tcdC gene is likely to act as a negative regulator of toxin gene expression.So far, it has been debatable whether tcdC gene is regarded as a negative regulator.The mechanism of tcdC gene in pathogenesis remains unclear.In this paper, the structure and function of the tcdC gene are summarized, which will help study the mechanism of tcdC gene and obtain optimal drug targets.

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Development of brain computer interface technology and its application prospect in brain control animals

Zhonglei SUN ; Yingfu LIU ; Yue TU ; Kai YANG ; Yuanchi CHENG ; Lin GANG ; Xuyi CHEN ; Feng CHEN

Military Medical Sciences.2016;40(10):843-846. doi:10.7644/j.issn.1674-9960.2016.10.016

The study of brain-machine interfaces ( BMI) based on humans or animals is expected to improve the living conditions of patients with brain injury, nervous system disease and limb movement disorders.Considerable progress has been made over the past ten years, which is gradually being used to address the long-term and stability issues of BMIs technology.The result of study on safety and security of BMIs has led to the appearance of brain control animals.In this paper, the development of BMI technology and the application prospects of brain control animals are reviewed.

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Application of estimated biodosimetry to medical rescue during nuclear and radiation accidents

Zhidong WANG ; Yong YUAN ; Qi WANG ; Gangqiao ZHOU

Military Medical Sciences.2016;40(10):839-842. doi:10.7644/j.issn.1674-9960.2016.10.015

During medical rescue for nuclear and radiation accidents, triage of potential victims could contribute to better use of medical resources currently and higher efficiency of the rescue.Biological dose estimation techniques ( estimated biodosimetry) are effective for assessing the degree of external radiation injury.The application of estimated biodosimetry to triage is important for effective nuclear accident medical rescue.In this paper, the characteristics of the estimated biodosimetry and its application to triage during medical rescue for nuclear accident and radiation were discussed.

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Effect of spot size on the result of single-particle ploidy detection

Jing WEI ; Zhi CHENG ; Feng CHEN ; Yaohua DU ; Chenyu LI ; Ningbo ZHAN ; Taihu WU

Military Medical Sciences.2016;40(10):833-838. doi:10.7644/j.issn.1674-9960.2016.10.014

Objective To explore the relationship between the spot size and the result of ploidy analysis in the detection technology based on single-particles, and to fix the scope of spot thickness on the basis of the experimental result.Methods The influence of spot thickness on voltage signals produced by single cells was analyzed.The parameters of the beam shap system in the incident field were designed and optimized on ZEMAX.Finally, according to the cells′diameter, the target size of spots was set.A set of spots of different thickness and of Gaussian distribution obtained from the optical experimental platform was used to conduct ploidy detection experiments.Results Target spots were both obtained from ZEMAX simulation and the optical platform.When the spot thickness was larger than both monocytes and coenocytes, the mean fluorescence intensity ratio was 2.03,which met the demand of the index.Conclusion When the height of the pulse is used to represent the fluorescence density, the relative size of spots and cells will affect the result of ploidy detection.Only when spot thickness is larger than cells is the ploidy ratio accurate.

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