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女子手球运动员膝、踝关节屈伸肌群等速测试结果分析 总被引：1，自引：0，他引：1
运用CON-TREX等速测试系统对广东省女子手球运动员的膝和踝关节进行等速向心测试.结果发现:受试队员两关节伸肌的相对峰力矩值均显著大于屈肌;右膝关节屈伸肌比值在60(°)/s测试速度下偏高;踝关节伸屈肌相对峰力矩的比值为39%～48%;大部分受试队员两侧踝关节同名肌峰力矩差值百分比均大于10%.结果说明:[1]女手球队员膝关节和踝关节的伸肌力量均大于屈肌力量.[2]女手球队员右膝关节屈伸肌力量比例不合理;踝关节屈伸肌力量比例合理.[3]大部分队员两侧踝关节同名肌力量不平衡,这同手球的专项特点以及力量训练有关. 相似文献
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目的:了解在常规力量训练基础附加核心力量训练及振动训练方法对国家女子篮球队18名运动员腰背、膝关节、踝关节等速肌力的影响。方法:采用Pneu VIBE振动训练台对国家女子篮球运动员进行振动刺激力量训练,振动频率为25～40 Hz,同时进行核心区肌力训练。经过12周系统的力量训练,应用IsoMed 2000等速测试训练仪器对女子篮球运动员腰腹、膝、踝关节屈伸肌群进行等速力量测试分析。结果:经过12周综合力量训练,女子篮球运动员腰背等速肌力明显上升,屈肌峰力矩(PT)增加了14.35%,背伸肌力量增加了15.65%,差异具有显著性。而下肢力量膝关节峰力矩、屈伸肌峰力矩比率(H/Q)无显著变化。踝关节研究发现,左踝背屈峰力矩训练后稍有减弱,跖屈肌峰力矩以及跖屈/背屈比无显著变化。结论:在常规力量训练中增加先进的核心区训练可有效增加女子篮球运动员腰腹肌力,而振动训练以提高踝、膝关节肌力的方法的有效性需要进一步研究。 相似文献
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石新燕 《天津体育学院学报》2012,27(2):168-172
结合训练实践,运用ISOMED2000等速测试仪对我国男子散打主力队员膝、肘关节屈伸肌群肌力特征进行测试与分析。结论:不同等级散打运动员肘关节屈伸肌群等速向心、离心收缩、膝关节伸肌群等速离心收缩相对峰力矩值在60°/s、180°/s时具有显著性差异(P<0.05);膝关节屈伸肌群等速向心收缩、屈肌群离心收缩相对峰力矩值在各角速度下具有显著性差异(P<0.05);不同等级散打运动员肘、膝关节屈伸肌群等速向心收缩在300°/s、离心收缩在240°/s时达到力矩梯度最大值,且差异显著。说明基础力量、中快速力量及快速动作爆发力能较好地反映专项运动水平,相对峰力矩、力矩梯度数值越大,专项水平越高。 相似文献
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《湖北体育科技》2017,(12):1062-1066
目的探讨跳水项目运动员的力量素质特征,以期更好的完成力量训练。方法通过对广东优秀跳水运动员下肢膝、踝关节及躯干屈伸肌群等速肌力测试及三维测力台SJ、CMJ测试,测定跳水运动员各肌群肌力水平。结果跳板运动员与跳台运动员在年龄、身高、体重方面有着显著性差异,其基本规律为男板>女板>男台>女台(P<0.05);跳板运动员与跳台运动员在关节等速肌力水平、三维测力台SJ、CMJ测试结果上有着显著性差异,其基本规律为男板>女板>男台>女台(P<0.05);膝关节的屈伸快速力量比例在0.60左右,踝关节则在0.40左右,低于世界标准;相对于体能项目,跳水运动员受到年龄、体重等因素影响,力量水平一般,快速条件下膝、踝关节耐力水平一般,躯干耐力水平较好。结论跳水运动员下肢薄弱肌群为膝关节屈肌、踝关节伸肌、躯干伸肌,同时膝、踝关节屈伸比值过低,易导致运动损伤的发生。 相似文献
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通过运用ISOMED 2 000多关节等速测力系统对我国国家男子短道队运动员膝、踝关节肌肉力量进行测试和分析,针对运动员力量特征和
表现,深入分析短道速度滑冰500 m项目特征,增强训练的优化性和对项目制胜规律的认识。结论：（1）优秀男子短道运动员在相对峰力矩和相
对总功指标上并没有表现出非常高的能力,在平均功率指标上表现出较好的随速度增加而提高的趋势,但是屈伸比指标远远低于国内外优秀运
动员,由于最大峰力矩角度指标前人研究较少,本研究结果可作为其他研究的基础和支撑;（2）膝伸肌群峰力矩角度（高速）、膝屈肌群平均功率
（中速）和膝屈肌群相对峰力矩（低速）3组数据进入与500 m成绩的逐步回归方程,相关系数为0.955,决定系数为0.912;（3）优秀短道运动员500 m
成绩的力量决定因素主要为高速度区最大力量发力时机、中速度区的肌肉爆发力以及低速度区最大力量储备,膝关节肌群力量相对踝关节在
500 m项目中更加重要。 相似文献
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利用CYBEX-NormT等速测试系统对我国46名优秀女子足球运动员膝关节屈伸肌群进行等速向心收缩测试与分析,结果提示:(1)提高我国女子足球运动员伸肌的最大力量和快速力量是提高运动能力的关键;(2)为防止腘绳肌的拉伤,应适当提高女足队员的膝关节屈肌的力量;(3)我国女子足球运动员膝关节屈伸肌比率不均衡是导致膝关节损伤的主要原因,力量训练中应加强屈、伸肌力量,尤其是伸肌的力量,以改善屈伸比率的不平衡,防止损伤的发生;(4)我国女子足球运动员存在两腿屈、伸肌力量不平衡现象,在力量训练中,应加强对弱势腿的力量训练,以保证两腿的肌力平衡,防止损伤的发生。 相似文献
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运用等速测试系统对备战伦敦奥运会的国家划艇运动员的肩关节、肘关节肌力进行测试与分析。结果表明:1)从力矩角度来看,优秀运动员与一般运动员在肩、肘关节肌力特征中存在显著性差异(P<0.05),且屈肌和伸肌的力矩角度分别呈现不同的特征;2)从峰力矩比值来看,在不同速度运动下,国家队优秀运动员和一般运动员均存在屈伸比的失衡问题,即最大力量上存在屈伸肌群发展的不合理化现象(<50%),随着测试速度的增加,屈伸比呈递减趋势;3)在肘关节两侧同名肌群的比较中同样存在不均衡现象,尤其是伸肌的两侧差值较大;4)肩关节的肌力特征也存在类似的现象,但屈肌明显不如伸肌力量。结论:应逐步加强划艇运动员肩、肘关节同侧屈伸肌群和异侧同名肌群的力量均衡性训练,并提高肩关节的屈肌力量能力。 相似文献
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目的：探讨优秀男子举重运动员肘关节屈伸肌群等速肌力特征及变化规律,为专项力量训练及同类研究提供理论参考。方法：采用美国CYBEX-Norm770型等速力量测试系统,测评山西省男子举重队7名现役运动员不同角速度下(30°/s、180°/s、)肘关节屈伸肌群等速肌力相关参数。结果：1)男子举重运动员双侧肘关节屈伸肌PT/BW随测试速度增加整体上呈现下降趋势(30°/s→180°/s);在同一测试速度下,右侧伸肌PT/BW显著高于左侧(P<0.05)。2)男子举重运动员双侧肘关节F/E随测试速度的增加而增大,测试速度为30°/s时,右侧肘关节F/E偏低仅为66%。3)男子举重运动员双侧肘关节屈伸肌AP随着测试速度的增加而增大。测试速度为180°/s时,右侧屈伸肌AP显著高于左侧(P<0.05)。结论：1)山西省优秀男子举重运动员双侧肘关节屈伸肌的肌力发展不均衡,右侧伸肌最大力量、快速力量显著大于左侧。运动员需要加强左侧肱三头肌、肱肌等伸肌的力量训练;同时在技术训练时,注重两侧肢体用力的对称性,实现双侧肘关节肌群均衡发展。2)未来研究应进一步确定优秀举重运动员AP下降的速度阈值,并... 相似文献
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以α-甲基苯乙烯和叔戊醇为原料,在催化剂磷酸的作用下合成产物1,1,2,3,3-五甲基茚满。考察了反应温度、催化剂用量、反应物料比对反应收率的影响。结果表明：以10.5g磷酸为催化剂,叔戊醇与α-甲基苯乙烯的摩尔比为1.3：1,反应温度50℃,产物收率达到32%。 相似文献
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几种生化指标( C K、 B U N、 H B、 L A、尿蛋白和隐血、尿 P H、胆红素和尿胆原、尿肌酐) 在运动实践中的应用 总被引：3，自引：0，他引：3
在当前国际竞技水平不断提高的形势下, 千分之一秒的胜负都需要运动员付出极大的生理代价, 这就更加要求以科学合理的手段最大限度地挖掘人类的运动能力, 有目的地进行科学训练。下面就一些比较常用的生化指标的特性及其在运动实践中的应用作一综述。如对训练的适应, 机能状态的评定, 实际应用方法等, 使运动训练更具科学性。本理论对教练员和运动员有一定的参考意义。 相似文献
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C. A. Macera Kirby L. Jackson Gerald W. Hagenmaier Jennie J. Kronenfeld Harold W. Kohl Steven N. Blair 《Research quarterly for exercise and sport》2013,84(3):225-233
Abstract The incidence of orthopedic problems was examined in 5, 582 men and women who attended the Cooper Clinic in Dallas, Texas between 1974 and 1982. The effects of age, physical activity, physical fitness, and body mass index (EMI) on the occurrence of these problems were examined using a proportional hazards approach. The expected risk of orthopedic problems per person-year was 0.045 for men and 0.046 for women. For men, physical fitness, BMI, and physical activity were associated with orthopedic problems, while for women, physical activity was the main predictor. Age was not a factor for either gender. The effect of change in physical fitness, physical activity, and BMI was examined in a subset of 2, 325 persons with more than one visit to the clinic. For women, physical activity and a decrease in BMI were associated with orthopedic problems, while for men none of those factors were significant. Again, age was not a factor in either group. The absence of any age effect on the occurrence of problems suggests that with regard to orthopedic problems, moderate amounts of physical activity in generally healthy persons may be recommended without special consideration as to age. 相似文献
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C A Macera K L Jackson G W Hagenmaier J J Kronenfeld H W Kohl S N Blair 《Research quarterly for exercise and sport》1989,60(3):225-233
The incidence of orthopedic problems was examined in 5,582 men and women who attended the Cooper Clinic in Dallas, Texas between 1974 and 1982. The effects of age, physical activity, physical fitness, and body mass index (BMI) on the occurrence of these problems were examined using a proportional hazards approach. The expected risk of orthopedic problems per person-year was 0.045 for men and 0.046 for women. For men, physical fitness, BMI, and physical activity were associated with orthopedic problems, while for women, physical activity was the main predictor. Age was not a factor for either gender. The effect of change in physical fitness, physical activity, and BMI was examined in a subset of 2,325 persons with more than one visit to the clinic. For women, physical activity and a decrease in BMI were associated with orthopedic problems, while for men none of those factors were significant. Again, age was not a factor in either group. The absence of any age effect on the occurrence of problems suggests that with regard to orthopedic problems, moderate amounts of physical activity in generally healthy persons may be recommended without special consideration as to age. 相似文献
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Stressors, coping, and coping effectiveness: gender, type of sport, and skill differences 总被引：1，自引：0，他引：1
The aim of this study was to examine stressors, coping, and coping effectiveness as a function of gender, type of sport, and skill. The sample consisted of 749 undergraduate athletes (455 males, 294 females) aged 18-38 years (mean= 19.8 years). Skill was classified as international/national, county, university, and club standard. Participants completed a stressor and coping concept map (Novak & Gowin, 1984). The results revealed gender, type of sport, and skill differences in relation to stressor frequencies, coping strategy deployment, and coping effectiveness. In contrast to previous research, females used a variety of problem-focused (e.g. planning, communication, technique-orientated coping) strategies more frequently than males. Team sport athletes reported a variety of sport-specific stressors relating to the demands of playing in a team environment. The group of national/international athletes reported using more planning, blocking, and visualization, and also reported that their coping was more effective than that of less-skilled athletes. 相似文献
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Adam R. Nicholls Remco Polman Andrew R. Levy Jamie Taylor Stephen Cobley 《Journal of sports sciences》2013,31(13):1521-1530
Abstract The aim of this study was to examine stressors, coping, and coping effectiveness as a function of gender, type of sport, and skill. The sample consisted of 749 undergraduate athletes (455 males, 294 females) aged 18 – 38 years (mean = 19.8 years). Skill was classified as international/national, county, university, and club standard. Participants completed a stressor and coping concept map (Novak & Gowin, 1984). The results revealed gender, type of sport, and skill differences in relation to stressor frequencies, coping strategy deployment, and coping effectiveness. In contrast to previous research, females used a variety of problem-focused (e.g. planning, communication, technique-orientated coping) strategies more frequently than males. Team sport athletes reported a variety of sport-specific stressors relating to the demands of playing in a team environment. The group of national/international athletes reported using more planning, blocking, and visualization, and also reported that their coping was more effective than that of less-skilled athletes. 相似文献