WCBA与WNBA女子篮球运动员的身高、体重、年龄特征比较研究

通过对2002-2003赛季WCBA和WNBA女子篮球运动员的身高、体重、年龄比较分 析,发现WCBA运动员中锋和前锋身高低于WNBA运动员,体重和年龄小于WNBA运动员。 结果认为,应注意对我国女子篮球运动员选材,加强力量训练和对抗训练。     

WCBA优秀中锋综合能力的评价指标研究

根据WCBA和WNBA优秀中锋的身高、体重、克托莱指数及临场技术的对比分析,选用能全面代表中锋的技术指标及评价方法,建立WCBA中锋身高、体重和技术运用特征的评价指标,为WCBA中锋的科学训练提供了依据,并且为WCBA中锋的综合评价提供了科学依据.     

2008—2009赛季WCBA常规赛运动员年龄、身体形态与运动成绩相关关系研究

本文运用文献资料法、数理统计法、对比分析法等，对参加2008-2009赛季WCBA常规赛比赛运动员的身高、体重、年龄等指标与运动成绩相关性进行比较分析。结果表明：WCBA不同位置运动员的平均年龄、身高、体重和克托莱指数存在显著性差异；WCBA常规赛不同名次运动员平均身高、体重、年龄和克托莱指数在12支球队中较为合理，顺应现代篮球运动的发展潮流。此结果可为中国篮球各级运动队的科学选材和训练提供借鉴与参考。     

CBA球员NBA球员可侧指标的比较研究

本对中美两国男篮队员的身高、体重、年龄及临场若干技术指标进行比较研究，发现我国球员除身高差距外，还存在体重轻、年龄结构不合理。技、战术水平低的弱点；并提出发展力量、改变观念，迅速提高我国男篮竞技水平的意见。     

对中外优秀女子足球运动员不同位置的身高、体重、年龄特征的对比与分析

通过对2007年女足世界杯中国球员与世界优秀球员的身高、体重、年龄的对比分析,结果发现：中国球员3项指标处于亚洲领先地位,但与世界欧、美优秀球员相比在体重和年龄方面还有明显的差距;其中守门员3项指标都达到或超过了世界优秀女子守门员的平均水平;后卫球员身高处于世界领先地位,但体重过轻,年龄显示其处在竞技最佳形成阶段;中场球员的身高和年龄指标都达到世界先进水平,体重指标上还与同位置欧、美球员存在差距;前锋球员其平均身高处于世界领先地位且身高较统一,体重和年龄指标方面特征同后卫球员反映一致。     

NBA国际球员的年龄、身高、体重特征分析

运用文献资料法和数理统计法对NBA联赛国际球员的年龄、身高、体重等特征进行了统计分析,并结合我国优秀男篮选手的基本参数特征,发现NBA联赛国际球员在身高、体重等方面均明显优于中国国家队队员,保证了在蓝球比赛激烈对抗中的体能优势和技术水平的充分发挥。因此,从训练学角度提出提高我国篮球运动员竞技水平的建议。     

2009—2010赛季CBA和NBA运动员体型和年龄特征

为提高CBA运动员的选材水平,延长其运动寿命,采用文献资料法、数理统计法与比较分析法,以2009-2010赛季CBA与NBA不同位置（前锋、中锋、后卫）的优秀运动员为主要研究对象,分别对其身高、体重、年龄进行比较分析。结果表明：CBA各个位置球员的身高均与NBA球员的身高存在一定差距,且队员体型偏瘦,体重偏轻,从而造成对抗上的劣势,CBA队员平均年龄偏小,过早的职业训练也缩短了他们的运动寿命。     

中外优秀网球选手年龄、身高、体重及克托莱指数的比较

对中外优秀男女网球选手年龄、身高、体重和克托莱指数进行了比较分析，结果表明：中外男女网球选手平均年龄均不存在显著的性别差异，且都处于黄金竞技年龄或最佳竞技年龄发展稳定阶段；我国与国外优秀男女选手平均年龄均存在显著的国别差异，我国男女选手比国外优秀选手年龄均明显偏小；中外选手在身高、体重及克托菜指数上均存在明显的性别差异，表现为男子大于女子；我国男女选手身高比国外优秀选手均明显偏低；在体重及克托莱指数上，我国男子均明显低于国外优秀选手，说明我国男子选手选手肌肉力量的发展程度与国外优秀选手存在一定的差距；而我国女子选手与国外优秀选手体重及克托莱指数无明显差异，这尚需作进一步考究。     

CBA与NBA不同位置优秀运动员身高、体重及年龄特征的比较研究

通过对我国CBA甲级联赛与美国NBA联赛不同位置(前锋、中锋、后卫)优秀运动员的身高、体重、年龄的比较分析,发现CBA队员的平均值都低于NBA球员的平均水平。指出身高、体重、年龄在现代篮球竞技中的重要作用,为我国男篮迅速赶超世界先进水平的选材、训练和阵容配备提供定量化的参考依据。     

2002-2003年WCBA联赛福建队与前7名队技战术比较分析

采用献资料、观摩、录像观察、数理统计、逻辑分析等方法对2002—2003WCBA联赛福建女篮与前7名队伍的技战术进行比较分析。结果表明，福建队总体上攻防稳定性差，在罚中次数、篮板球、抢断上与对手存在差距，具有显性，得分能力弱于对手；在总的快攻、助攻和盖帽等几项指标上优于对手；福建队的年龄偏大，身高和身体结实度比对手差；外援的引进缓解了内线弱的状况；后卫队员心理稳定性差，强攻杀伤力不足，前锋队员攻防能力差。     

中国女子篮球甲级联赛商业化运作研究

运用文献资料法、对比分析法和综述法等,分析中国女子篮球甲级联赛（WCBA）的商业化运作现状及存在的问题,并对WNBA联赛商业化运作成功之处进行分析,探讨如何借鉴WNBA成功经验及我国当前国情,更好的开发与施行我国女子篮球甲级联赛的商业化运作。     

WCUBA和WCBA优秀女篮运动员的身高、体重、年龄的比较研究

通过对优秀女子篮球运动员的身高、体重、年龄的统计分析表明:WCBA优秀女子篮球运动员的身高、体重、年龄有基本特点和规律,与其相比,WCUBA优秀女子篮球运动员存在不足,应引起注意并采取有针对性的措施加以解决,尽快提高WCUBA女篮的水平。     

世界优秀女子篮球联赛的比较

通过分析美国女子职业篮球联赛(WNBA)、欧洲女子篮球联赛(ELW)和中国女子篮球联赛(WC-BA)，揭示出了世界高水平女篮运动员在身高、体重、年龄及技术等方面的特征和规律，为尽快提高我国女子篮球联赛水平提供参考。     

WCBA联赛中、外优秀中锋运动员技术运用能力比较研究

通过对WCBA联赛优秀中锋运动员技术运用能力主要指标进行比较分析,结果显示,国内运动员在获得球能力上整体不如对方,尤其在抢篮板球能力上与对方差距最大;在支配球能力主要方面双方实力相当,国内中锋运动员篮下进攻时应用投篮技术范型较多而变式相对较少,投篮时心理状态不够稳定,对抗能力不强,尤其在挤扛中动作的稳定性较差,但比对方快速、灵活和全面。     

Biomechanical mechanisms of jumping performance in youth elite female soccer players

ABSTRACT

We aimed to determine key biomechanical parameters explaining age-related jumping performance differences in youth elite female soccer players. Multiple biomechanical parameters from countermovement (CMJ) squat (SJ) and drop (DJ) jump testing of elite female soccer players (n = 60) within the same national training centre were analysed across ages 9-11y, 12-14y and 15-19y. Effects of age group and jump type on jump height were found, with the older jumping higher than the younger groups in all jumps (P < 0.05). For DJ, higher reactive strength index was found for older, compared to each younger group (P < 0.001). For CMJ and SJ, peak power was the most decisive characteristic, with significant differences between each group for absolute peak power (P < 0.0001) and body-weight-normalised peak power in CMJ (57 ± 7W/kg, 50 ± 7W/kg, 44.7 ± 5.5W/kg; P < 0.05) and between the older and each younger group in SJ (56.7 ± 7.1W/kg, 48.9 ± 7.1W/kg, 44.6 ± 6W/kg; P < 0.01). Age-related differences in jumping performance in youth elite female soccer players appear to be due to power production during standing jumps and by the ability to jump with shorter ground contact times during reactive jumps.     

Shoulder and elbow kinematics in throwing of young baseball players

In this study we compared the kinematic features of the throwing motion between young baseball players of different age groups. Forty-four Japanese baseball players aged 6.1 to 12.3 years who regularly played baseball, including pitchers and position players, had their throwing actions analyzed three-dimensionally using high speed videography. Of this sample, 26 players aged above 9 years of age were categorized as the senior group, while the remaining 18 were categorized as the junior group. Senior group throwers had greater height and body mass, and produced a greater ball speed than junior group throwers. The throwing arm movement of senior group throwers was similar to that of adult skilled players. However, in the junior group throwers, the shoulder horizontal adduction angle was larger during the arm acceleration phase, and the maximum angular velocities of elbow extension and shoulder internal rotation occurred later than in senior group throwers. These results indicate that players aged above 9 years can acquire a mature throwing arm movement, while players younger than that will use an immature motion. A possible reason why these differences were shown is that the official baseball is relatively heavy for junior group throwers; they would be better advised to use a lighter ball in throwing practice.     

Change-of-direction,speed and jump performance in soccer players: a comparison across different age-categories

ABSTRACT

This study examined the age-specific development of vertical jump height, straight and change-of-direction (COD) speed, and COD deficit in one-hundred and eighty-two elite soccer players from different age-categories (U15, U17, U20, and Senior). All participants were players of two distinct clubs and were undertaking different training routines, as planned by their technical staff members. For this purpose, the soccer players performed: (1) squat and countermovement jumps; (2) a maximal 20-m linear sprint speed test, and (3) the Zigzag COD test. The magnitude-based inference approach and standardized differences were used to compare the age-groups. Sprint speed at longer distances (20-m) increased progressively across the age-ranges. In contrast, speed and acceleration performances at shorter distances (5-m) were better in U15 than in the other age-categories. The COD speed did not change throughout the younger categories but presented a meaningful decrease in the Senior category. Surprisingly, despite the progressive increase in volume and intensity of neuromuscular training from younger to older categories, the COD deficit presented a gradual increase across the age-groups. It is possible that simple modulation of the strength-power training program during the maturation process is not sufficient to produce faster adult players with enhanced ability to change direction. Therefore, coaches are strongly encouraged to implement specific COD training practices to tolerate braking at increasing running speeds and appropriate volume and intensity of soccer specific training throughout the players’ specialization process.     

Neuromuscular, metabolic and hormonal profiles of young tennis players and untrained boys

This study compared the neuromuscular, metabolic and hormonal profiles of trained prepubescent tennis players and an untrained group. The boys in the experimental group (n = 9; mean age +/- S.D. = 11.4 +/- 0.5 years) had participated in tennis training for 2.3 +/- 1.0 years and the boys in the control group (n = 9; mean age +/- S.D. = 10.9 +/- 0.4 years) were normal active volunteers. The tennis players were found to be physically more active than the controls when the comparison was made for either 1 year (4.9 +/- 1.8 vs 2.6 +/- 2.5 times per week; P less than 0.05) or for 1 week (3.4 +/- 1.2 vs 0.4 +/- 0.5 times; P less than 0.001) preceding the tests. Choice reaction time was significantly (P less than 0.01) shorter in the experimental group (258 +/- 16 ms) than in the control group (344 +/- 81 ms). Dropping height in the best drop jump was significantly (P less than 0.05) higher in the tennis players (0.46 +/- 0.19 m) than in the control boys (0.27 +/- 0.10 m). The tennis players had significantly lower oxygen consumption at the 'anaerobic threshold' than the controls (P less than 0.05). There were no significant differences between the groups in serum hormone levels. The small differences that existed may have been caused by active participation in sport by the tennis players.