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世界杯女子双人单桨冠军艇运动员途中划桨技术特点研究 总被引：1，自引：0，他引：1
通过二维摄像解析法,对06赛艇世界杯赛慕尼黑站决赛冠军艇的划桨技术特征进行探索。研究结论:1)具有较高的桨频、合理的划距补偿以及能量节省化是冠军艇艇速优势形成的三大要素;2)在拉桨前段与推桨后段耗时较少是冠军艇较高桨频形成的主要因素,桨入水角度对其影响较大;3)冠军艇划距补偿的主要途径在于在拉桨后段与推桨前段耗时相对较多,在推桨前段艇速较高;4)冠军艇注重在推桨阶段争夺艇速优势,注重在拉桨后段划桨速度转化率的提高。 相似文献
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Abstract In this study, video and force analysis techniques were used to distinguish between dragon boat paddlers of different ability. Six elite paddlers (three males, three females) and six sub-elite paddlers (two males, four females) were compared during high-intensity paddling (80–90 strokes · min?1). Video filming was conducted for two-dimensional kinematic analysis and an instrumented paddle was used to collect force data. Paddling efficiency, paddle force characteristics, and paddler kinematic variables were measured. Elite paddlers achieved higher paddling efficiency than sub-elite paddlers (elite: 76 ± 4%; sub-elite: 67 ± 10%; P = 0.080). Elite paddlers also showed higher peak force (elite: 16.3 ± 4.8 N · kg?2/3; sub-elite: 11.4 ± 2.6 N · kg?2/3; P = 0.052), average force (elite: 7.9 ± 2.8 N · kg?2/3; sub-elite: 5.5 ± 1.4 N · kg?2/3; P = 0.084), and impulse (elite: 3.0 ± 0.9 (N · s) · kg?2/3; sub-elite: 1.9 ± 0.4 (N · s) · kg?2/3; P = 0.026) than sub-elite paddlers, but these three results should be viewed with caution due to the small sample size and the unequal number of males and females in the two groups. Superior technique and greater strength enable the elite paddlers to achieve higher paddling efficiency. Paddlers use different joint movement patterns to develop propulsion, which are reflected in variations in the force–time curve. 相似文献
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William P. Morgan 《Research quarterly for exercise and sport》2013,84(1):50-76
Abstract Five highly skilled canoe racers performed three trials each at race pace using a conventional straight canoe paddle and a modified paddle with the blade angled 15 degrees forward from the shaft. The use of the straight paddle resulted in a mean velocity of 290 cm/sec whereas the angled paddle resulted in a significantly faster mean velocity of 306 cm/sec (p<.05). There were no differences in the temporal sequences of the boat velocities. There were no significant differences in the time the paddles were in the air between strokes. It was also determined that the angled paddle had less absolute movement in the water than the straight paddle during the period of greatest boat acceleration. No significant differences were found in paddling technique through absolute measurement and temporal sequence of horizontal displacement of either hand relative to its corresponding shoulder, either shoulder relative to the spine, or the spine relative to the boat. 相似文献
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Anette Johansson Ulla Svantesson Jörgen Tannerstedt Marie Alricsson 《Journal of sports sciences》2016,34(10):951-958
Few studies have investigated the incidence of injuries in kayakers. The aim was to study the prevalence of shoulder pain in competitive flatwater kayakers and to evaluate any differences in range of motion or scapula stability of the shoulder joint among kayakers with or without the history of shoulder pain. Thirty-one kayakers were participated in the study, and a questionnaire including background data was used. Shoulder range of motion was measured with a goniometer, and the participants were observed for scapula dyskinesis in flexion and abduction. Of the participating kayakers, 54.8% (n = 17) had experienced shoulder pain. Kayakers who had experienced shoulder pain showed a significantly lower degree of internal rotational range of motion versus kayakers with no reported shoulder pain, with a mean degree of internal rotation in the right shoulder 49.3 vs 60.0 (P = 0.017) and the left shoulder 51.9 vs 66.0 (P = 0.000). Kayakers who had experienced shoulder pain were also observed with a scapular dyskinesis (n = 15 of 17 kayakers) to a significantly higher degree (P = 0.001) than kayakers with no reported shoulder pain. Findings suggest that screening for scapular dyskinesis and testing for rotational range of motion in the shoulder joint is essential in order to treat and maybe prevent shoulder pain in kayakers. 相似文献
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Johanna S. Rosén Anton Arndt Victoria L. Goosey-Tolfrey Barry S. Mason Michael J. Hutchinson Olga Tarassova 《Journal of sports sciences》2013,31(17):1942-1950
ABSTRACTPara Va’a is a new Paralympic sport in which athletes with trunk and/or leg impairment compete over 200 m. The purpose of this study was to examine the impact of impairment on kinematic and kinetic variables during Va’a ergometer paddling. Ten able-bodied and 44 Para Va’a athletes with impairments affecting: trunk and legs (TL), legs bilaterally (BL) or leg unilaterally (UL) participated. Differences in stroke frequency, mean paddling force, and joint angles and correlation of the joint angles with paddling force were examined. Able-bodied demonstrated significantly greater paddling force as well as knee and ankle flexion ranges of movement (ROM) on the top hand paddling side compared to TL, BL and UL. Able-bodied, BL and UL demonstrated greater paddling force and trunk flexion compared to TL, and UL demonstrated larger bottom hand paddling side knee and ankle flexion ROM compared to BL. Significant positive correlations were observed for both male and female athletes between paddling force and all trunk flexion angles and ROM in the trunk and pelvis rotation and bottom hand paddling side hip, knee and ankle flexion. The results of this study are important for creating an evidence-based classification system for Para Va’a. 相似文献
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Anna Bjerkefors Olga Tarassova Johanna S. Rosén Pascal Zakaria Anton Arndt 《Sports biomechanics / International Society of Biomechanics in Sports》2018,17(3):414-427
The purpose was to examine power output and three-dimensional (3D) kinematic variables in the upper limbs, lower limbs and trunk in elite flat-water kayakers during kayak ergometer paddling. An additional purpose was to analyse possible changes in kinematics with increased intensity and differences between body sides. Six male and four female international level flat-water kayakers participated. Kinematic and kinetic data were collected during three tasks; low (IntL), high (IntH) and maximal (IntM) intensities. No differences were observed in any joint angles between body sides, except for shoulder abduction. Significantly greater range of motion (RoM) values were observed for IntH compared to IntL and for IntM compared to IntL in trunk and pelvis rotation, and in hip, knee and ankle flexion. The mean maximal power output was 610 ± 65 and 359 ± 33 W for the male and female athletes, respectively. The stroke frequencies were significantly different between all intensities (IntL 59.3 ± 6.3; IntH 108.0 ± 6.8; IntM 141.7 ± 18.4 strokes/min). The results showed that after a certain intensity level, the power output must be increased by other factors than increasing the joint angular RoM. This information may assist coaches and athletes to understand the relationship between the movement of the kayaker and the paddling power output. 相似文献
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梁海丹 《山西师大体育学院学报》2008,23(4):112-114
划艇每桨技术的改进成为提高运动员划船技术的关键所在,如何提高其效果则日益受到教练员和科研人员的关注。通过对国内外静水划艇项目每桨技术研究的总结与分析,提出了目前划艇项目划桨技术研究存在的问题,并对未来的研究提出几点建议。 相似文献
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目的:了解广东省划船运动员营养知识(Knowledge)、态度(Attitude)、行为(Practice)(简称KAP)情况及相关影响因素,为制定科学的营养教育方案,实施有效的营养干预措施提供科学依据。方法:对广东省运动队79名优秀划船运动员进行膳食营养KAP调查。结果:划船运动员营养知识掌握较为欠缺;营养态度整体表现较好,部分男子皮划艇运动员营养态度不够端正,需要加以正确引导;营养行为情况良好,但仍存在一些问题,主要表现为营养素摄入不均衡、零食不当、三餐餐次不合理等方面。划船运动员营养知识与态度,营养态度与行为均呈非常显著正相关(p<0.01);KAP总分与文化程度呈显著正相关(p<0.05)。结论:把运动员管理和餐厅膳食管理进行有效结合,使营养教育及膳食营养调控真正起到事半功倍的效果。 相似文献
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