Sports biomechanics is a strong experimental frontier branches of science and aims to study human body motion,to explore human motion rule by human anatomy,human physiology,mechanics theories and methods. Studies on muscle mechanics are basis of studying sports biomechanics and movement training. Muscular mechanical property is very complex,and related to composition of muscle. Under different sports conditions,biomechanics characteristics of skeletal muscle are different,so the sports injuries are varied.

Sports biomechanics, as a branch of biomechanics, studies mechanics characteristics and mechanics relationship of human internal locomotor system and human external bodily movement to fundamentally understand the rule of biomechanics characteristics under the sports condition. Muscular function and mechanics characteristics are a basis of human motion, and muscle mechanics is a basis of sports biomechanics research and sports training.

Joint ligament injury often occurs in basketball sports,therefore,research on characteristics of joint cruciate ligament injury is helpful for the prevention and therapy for joint ligament injury.The manuscript introduces the biomechanical characteristics of knee joint cruciate ligament in the moving state,biological problems involved in repair,as well as the application of artificial ligament in knee joint crucriate ligament injury and its advantages and disadvantages.Various kinds of artificial ligament can be used for the repair of ligament injury,such as polyhexene,poly(ethylene terephthalate),carbon fibers,polyester,polydioxnon,polylactic acid.If we can perfect the artificial ligament,it will be more beneficial to its application in repair of ligament injury.

A Basketball sport is characterized by high exercise intensity, intense antagonism, many physical contacts, and agility. A series of injuries occurs in basketball sports. Tendon adhesion following basketball sports injury is a big problem puzzling athletes for a long time, which affect training and sport technique. Many scholars has been engaged in studying the methods prevent tendon adhesion following basketball sports injury. The article reviews the preventive effects of several biomaterials, such as chitosan, absorbable anti-adhesive film, sodium hyaluronate, polylactic acid, on tendon adhesion following basketball sports injury.

Objective To observe the clinical effects of modified Shengxian decoction in the treatment of thyroid cancer postoperative hypothyroidism patients.Methods 60 patients of thyroid cancer postoperative hypothyroidism due to deficiency of spleen and kidney were randomly divided into a control group and a treatment group.The control group (28 cases) was by levothyroxine sodium tablets conventional treatment,while the treatment group (32 cases) was treated with Shengxian decoction based on thecontrol group.The changes of the symptom integral and HAMD-17 were observed between two groups before and after treatment.Results After treatment,the total effective rate was 87.5％ in the treatment group and 64.3％ in the control group,the clinical effect of treatment group was significantly better than the control group (x2=4.499,P＜ 0.05).After treatment,the total score of HAMD-17 was 6.8±2.3 in the treatment group and 15.8±2.1 in the control group,both significantly improved than that before the treatment (which were 19.4±1.45 and 18.9± 1.32 respectively).Compared with the control group,the treatment group improved significantly (P＜ 0.01).Conclusion Shengxian decoction plus western medicine has remarkable curative effect in the treatment of thyroid cancer postoperative hypothyroidism,it can improve the depressive state of patients and improve the quality of life.

Objective To investigate the level and influencing factors of caregivers′burden among primary caregivers of elderly stroke patients. Methods Totally 298 caregivers of elderly stroke patients were investigated with Zarit Burden Interview (ZBI), Hospital Anxiety and Depression Scale (HADS) and Simplified Coping Style Questionnaire(SCSQ). The patients were investigated with Modified Barthel Index (MBI). Results The caregivers′burden was in the mild level with a total score of 35.21±11.45. The influencing factors were the number of days of care, daily caring hours, hospital anxiety and depression score, the coping style and the ability of patients to perform ADL. Conclusions The primary caregivers of stroke patients have mild burden. The nurses should be synchronized to assess the health of patients and primary caregivers at the same time, understand the caregivers′burden, and provide specific care advice, in order to reduce the burden of their carer, so as to improve the quality of patients′life.

Objective To establish a high-performance liquid chromatography method for determination of mycophenolic acid in human plasma.Methods The method was performed with C18 column(3.9mm?300mm).The mobile phase consisted of 40mmoL/L TBA solution-acetonitrile adjusted to pH 4 with orthophosphoric acid(55∶45,V∶V),with a flow rate 0.8mL/min.The UV detection wavelength was 254nm.Plasma samples were extracted with methanol.Results The linear concentration of the calibration curve ranged from 0.8 to 51.45mg/L(r=0.9998).The relative recoveries were between 95.5% and 109.2%,and the extraction recoveries were more than 90%.Relative standard deviation(RSD) of intraday and interday assays were both less than 10%.Conclusion The method is proved to be reliable and simple for monitoring mycophenolic acid in human plasma and bioequivalence research.

Objective To provide the evidences for the management strategies of ventilator-associated pneumonia (VAP) in neonates,we systematically reviewed all related studies and analyzed the high-risk primary disease and medical factors of VAP in neonates.Methods We retrieved all related studies in CNKI,Wanfang,VIP,CBM,Pubmed and Embase and evaluated their quality by Newcastle-Ottawa Scale and analyzed all data by qualitative and Meta-analysis.Results There were 12 case-control studies with higher methodological quality and involving 1 994 neonates and with 708 VAP patients.Six studies involving 872 neonates were included,the odds ratio of respiratory distress syndrome(OR=2.81) and malnutrition(OR=5.18) had significant differences between VAP and non-VAP group.Seven studies involving 1 110 neonates were included and the odds ratio of patients with corticosteroids (OR=3.12),central inhibitors (OR=2.31),antacids (OR=4.35) and Gamma globulin with large doses (OR=2.35) had significant differences between VAP group and non VAP.Four studies involving 554 neonates were included and the odds ratio of patients with closed chest drainage (OR=1.81)and umbilical vein catheterization (OR=9.19) had significant differences between VAP group and non VAP.Six studies involving 1 139 neonates were included and the odds ratio of patients with parenteral nutrition (OR=1.82)and blood transfusions (OR=2.49) had significant differences between VAP group and non VAP.Conclusions Our study confirms that the respiratory distress syndrome and malnutrition corticosteroids,central inhibitors,antacids,Gamma globulin with large doses,closed chest drainage,umbilical vein catheterization,parenteral nutrition and blood transfusions are important risk and early-warning factors.

[ ABSTRACT] AIM:To investigate the effect of Jia-jian-yi-yin decoction on endothelium-dysfunction in ovariecto-mized rats.METHODS:The ovariectomized rats were treated with Jia-jian-yi-yin decoction or turbid liquid of estradiol va-lerate for 8 weeks.The vascular ring tension was measured.Scanning electron microscopy and Western blotting were ap-plied to assess the function of endothelium-dependent dilation, aortic endothelial morphology and the expression of endothe-lial lipase.The pathologic sections were prepared to observe the effect of Jia-jian-yi-yin decoction on the uterus.RE-SULTS:In ovariectomized rats, the decrease in endothelium-dependent relaxation to acetylcholine ( ACh) was reversed to normal level, the endothelial morphology returned to normal without lipid accumulation and the endothelial lipase expression was decreased by Jia-jian-yi-yin decoction.Furthermore, no obvious change of the wet weight of uterine between the ovari-ectomized rats with or without Jia-jian-yi-yin decoction treatment was observed.CONCLUSION:Jia-jian-yi-yin decoction may have protective effects on endothelium-dependent vasodilation and aortic endothelial morphology in estrogen-deficient animals.

Objective To find a rapid and simple method for quantifying the amount of eluted proteins in chromatography. Methods The method was developed by utilizing the principle of the absorbance of protein at 280 nm and the integral function of the software UNICORN for AKTA FPLC, namely, the protein quantity was evaluated based on its A_ 280 and peak area. Results The relation between peak area and quantity of the protein was linear correlation. The protein quantity could be expressed as X=Y/A. The Y represented the peak area (mAU?ml) of the interested fraction, and A represented the measurable value (mAU) of 1 g/L interested protein through the FPLC 280 nm cell and X was the quantity of the interested protein (mg). The method was used in the purification of recombinant human zona pellucida-3 protein (rhZP3)and the quantity of the purified rhZP3 evaluated from the formula was confirmed by Lowry method. Conclusion The method is easy, rapid, repeatable and practicable to quantify the protein in chromatography.