腰痛羽毛球运动员的功能评估          下载免费PDF全文

李男  檀志宗  叶晶龙  刘新宇  任雪 《体育科研》2017,(6):82-86

研究目的：对腰痛羽毛球运动员的部分功能进行测试，观察其活动范围、肌肉力量、肌电活动以及相应对称性。为了解羽毛球运动员损伤机制发生提供科学依据。研究对象：6名腰痛羽毛球运动员（男运动员4名，女运动员2名）。研究方法：对研究对象分别进行日本矫正外科协会（JOA）评分量表、躯干旋转、胸椎旋转、髋关节内外旋活动度、躯干等速旋转力量、等长背伸活动的肌电活动测试，并观察两侧差异比的平均值。研究结果：（1）腰痛运动员的躯干旋转、胸椎旋转以及髋关节外旋活动度平均差异比为（31.98±21.53）%，（19.8±17.08）%，（13.81±4.43）%大于10%，仅髋关节内旋活动度平均差异比为（5.62±5.63）%小于10%。胸椎和髋关节旋转动度有减小的趋势；（2）等速躯干旋转两侧峰力矩和平均功率差异没有显著性意义，峰力矩平均差异比为（5.45±1.78）%小于10%，而平均功率平均差异比为（12.78±11.40）%大于10%；（3）在等长背伸活动中，竖脊肌肌电活动的平均两侧差异比为（14.18±9.84）%大于10%，而多裂肌肌电活动的平均两侧差异比（9.90±7.92）%接近10%；竖脊肌和多裂肌的中位频率斜率（Median Frequency slope，MFs）均出现下降的趋势，但两侧差异比为（4.68±3.17）%，（5.35±5.40）%小于10%。结论：（1）腰痛羽毛球运动员躯干旋转、胸椎旋转、髋关节外旋活动范围存在对称性问题，且胸椎旋转、髋关节旋转有减少趋势；（2）躯干等速旋转平均功率存在对称性问题；（3）等长背伸任务中，竖脊肌和多裂肌出现疲劳，肌电活动存在对称性问题。  相似文献   

Adult mental health outcomes of child sexual abuse survivors born at extremely low birth weight     

《Child abuse & neglect》2016

The high prevalence of child sexual abuse (CSA) is concerning, particularly as survivors are at increased risk for multiple adverse outcomes, including poor mental health across the lifespan. Children born at an extremely low birth weight (ELBW; <1000 g) and who experience CSA may be a group that is especially vulnerable to psychopathology later in life. However, no research has considered the mental health risks associated with being born at ELBW and experiencing CSA. In this study, we investigated the mental health of 179 ELBW survivors and 145 matched normal birth weight (NBW; >2500 g) participants at ages 22–26 and 29–36. At age 22–26, CSA was associated with increased odds of clinically significant internalizing (OR = 7.32, 95% CI: 2.31–23.23) and externalizing (OR = 4.65, 95% CI: 1.11–19.51) problems among ELBW participants exposed to CSA compared to those who did not, though confidence intervals were wide. At age 29–36, CSA was linked to increased odds of any current (OR = 3.43, 95% CI: 1.08–10.87) and lifetime (OR = 7.09, 95% CI: 2.00–25.03) non-substance use psychiatric disorders, however, this did not hold after adjustment for covariates. Statistically significant differences in mental health outcomes were not observed in NBW participants exposed to CSA compared to NBW participants who were not exposed. Survivors of significant perinatal adversity who are also exposed to CSA may be at higher risk for psychopathology through the fourth decade of life.  相似文献   

A prospective examination of the impact of high levels of exercise training on sedentary behaviour     

Ann M. Swartz  Nora E. Miller  Young IK Cho  Whitney A. Welch  Scott J. Strath 《European Journal of Sport Science》2017,17(2):222-230

The aim of this study is to determine changes in sedentary behaviour in response to extensive aerobic exercise training. Participants included adults who self-selected to run a marathon. Sedentary behaviour, total activity counts and physical activity (PA) intensity were assessed (Actigraph GT3X) for seven consecutive days during seven assessment periods (?3, ?2, and ?1 month prior to the marathon, within 2 weeks of the marathon, and +1, +2, and +3 months after the marathon). Models were fitted with multiple imputation data using the STATA mi module. Random intercept generalized least squares (GLS) regression models were used to determine change in sedentary behaviour with seven waves of repeated measures. Results: Twenty-three individuals (mean?±?S_x: 34.4?±?2.1y, 23.0?±?1.9% fat, 15 women, 8 men) completed the study. Marathon finishing times ranged from 185 to 344 minutes (253.2?±?9.6 minutes). Total counts in the vertical axis were 1,729,414 lower one month after the race, compared with two months prior to the race (peak training). Furthermore, counts per minute decreased by 252.7 counts·minute^?1 during that same time period. Daily sedentary behaviour did not change over the seven assessment periods, after accounting for age, gender, per cent body fat, wear time, marathon finishing time, and previous marathon experience. This prospective study supports the notion that PA and sedentary behaviours are distinct, showing that sedentary behaviour was not impacted by high levels of aerobic training.  相似文献   

浅谈地下中空薄壁混凝土结构的裂缝防预构造措施     

滕先飞  裴锐 《辽宁科技学院学报》2015,(3):23-24

大尺寸薄壁钢筋混凝土结构,对温度的变化和基础的不均匀沉降较为敏感。制定合理的施工方案,材料的合理选择、施工流程精心组织保证了裂缝控制效果良好。  相似文献   

X5045在智能低压综合保护装置中的应用     

任艳艳  牛鑫 《重庆职业技术学院学报》2006,15(4):149-152

X5045芯片是美国Xicor公司生产的集“看门狗”定时器、电压监控和串行E2PROM三项功能于一体的专用集成芯片。本文介绍了X5045芯片的结构、功能、工作原理以及X5045在智能低压综合保护装置中的应用,给出了X5045芯片与AT89S52单片机的硬件接口电路,编写出相应C51应用程序,并成功应用于低压综合保护装置中,取得了令人满意的效果。  相似文献   

关于工程招投标中"合理低价"的探讨     

梁启雄 《茂名学院学报》2007,17(6):72-74,81

通过分析现有的建设工程造价构成的特点和存在的问题,就在现行的工程招投标机制下界定"合理低价"应考虑的因素及应采用的措施进行了探讨,为科学客观地测算工程合理低价提供了参考。  相似文献   

低温胁迫下镧对水稻种子萌发的影响   总被引：3，自引：0，他引：3  

刘惠娜  钟东方  许良政 《嘉应学院学报》2007,25(3):72-76

以水稻(Oryza sativa)种子为实验材料,研究了不同浓度稀土元素镧浸种对水稻种子低温萌发的影响。结果表明:15℃低温胁迫抑制水稻种子的萌发,浸种期用硝酸镧处理能够提高种子的抗逆性。低浓度((50~250)×10-6mol/L)硝酸镧浸种能提高水稻种子发芽率、发芽势、呼吸速率和过氧化氢酶活性,提高种子抗寒能力,实验发现用硝酸镧处理种子萌发以250×10-6mol/L浓度为最佳,低温胁迫下,发芽率提高9.67%,呼吸速率提高56.25%,过氧化氢酶活性提高1.73%。350×10-6mol/L以上高浓度对水稻种子的萌发无明显影响。  相似文献   

把握“四大主题”全面建设小康社会——用科学发展观发展十堰经济的对策思路     

陈天会 《十堰职业技术学院学报》2005,18(1):1-7

“全面建设小康社会”,是我国目前社会发展的中心任务。十堰市在全面建设小康社会过程中存在着低水平、不全面、不平衡三个问题。应该看到,十堰市建设小康社会有较多机遇,也有许多不利因素。全面建设小康社会的目标应分三个阶段完成,应把握好经济发展、民主与法制建设、人的全面发展、可持续发展四大主题。  相似文献   

时尚心理与领导干部作风建设     

吕全国 《黄冈职业技术学院学报》2007,9(4):73-75

时尚是一种群众性的社会心理现象,它对社会可能有益,也可能有害。现在开展领导干部作风建设,就是要将党对领导干部作风上的要求变成时尚,促进社会健康时尚的形成,进而促进和谐社会建设。  相似文献   

Understanding college degree completion of students with low socioeconomic status: The Influence of the Institutional Financial Context     

Marvin A. Titus 《Research in higher education》2006,47(4):371-398

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