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1.
本研究采用动静态平衡仪对20名体操运动员进行姿势平衡中的感觉相互作用的评估。结果发现:在不同的试验条件下,三个感觉系统对维持平衡的作用不同,体操运动员在维持平衡的过程中前庭功能和视觉都起主要作用;平衡中枢对感觉信息具有复杂的整合调节作用;运动员所应用的感觉信息和取得平衡的策略有较大的个体差异。结论:体操运动员在进行平衡能力的专项练习时,应重视视觉和前庭功能的训练。  相似文献   
2.
With the aim of determining both the acute and the chronic effects of textured insoles on the ankle discrimination and performance ability of dancers, 60 ballet dancers from the Australian Ballet School, aged 14–19 years, were divided into three groups (two intervention groups and a control group), age- and level-matched. In the first 5 weeks (weeks 1 to 5), the first intervention group (GRP1) was asked to wear textured insoles in their ballet shoes and the second intervention group (GRP2) was not given textured insoles to wear. In the next 5 weeks (weeks 6 to 10), GRP2 was asked to wear the same type of textured insoles and GRP1 did not wear the textured insoles. The control group (CTRL) did not wear textured insoles during the whole 10 weeks. All participants were tested preintervention, after 5 weeks and after 10 weeks for ankle discrimination score (AUC scores). Dance performance was assessed by 5–7 dance teachers. Pre-to-post change in AUC scores was significantly greater for the groups wearing insoles than for the controls (P = .046) and the size of pre-to-post changes did not differ between the two intervention groups (P = .834). Significant correlation was found between ankle discrimination score and performance scores, using the textured insoles (r = .412; P = .024). In conclusion, the stimulation to the proprioceptive system arising from textured insoles worn for five weeks was sufficient to improve the proprioceptive ability and performance ability of ballet dancers.  相似文献   
3.
通过对810名不同性别、不同地域的3~6岁学龄前儿童感统合能力的测试发现,我国学龄前儿童感觉统合失调的发生具有普遍性,并存在明显的地域、性别、年龄、出生状态以及后天教育差异。建议相关人员高度重视并积极开展儿童感觉统合训练,以期预防和矫正獐感统合失调。  相似文献   
4.
ABSTRACT

Water polo players require a high level of upper-extremity strength, flexibility and coordination to achieve a peak level of throwing performance. Increased levels of shoulder proprioceptive acuity, strength and range of motion (ROM) have been previously associated with higher sporting performance. A coach-rating scale, used to quantify an athlete’s kicking proficiency in soccer; was adapted in the current study to measure each coach’s subjective expert opinion regarding athletes’ throwing mechanics, velocity, and accuracy. To examine this hypothesis shoulder proprioception acuity of 18 water polo players was measured both in-water and on-land using an AMEDA apparatus and correlated with coach-rated throwing performance and clinical measures of shoulder strength and ROM. There was a moderate positive correlation between the in-water and the on-land proprioception acuity (r = 0.47, p < 0.05). The in-water score showing a strong positive correlation with coach rated throwing mechanics (r = 0.68, p < 0.05) and velocity (r = 0.75, p = 0.02), suggesting that superior proprioception acuity contributed to fast, mechanically-efficient throwing. These findings support the notion that in-water proprioceptive acuity is an important determinant of the throwing performance achieved by water polo athletes and its measurement may be a valuable adjunct to current athlete screening.  相似文献   
5.
Abstract

The effects of flexibility conditioning on neuromuscular and sensorimotor performance were assessed near to full knee extension (25°). Eighteen males who were randomly assigned into two groups underwent eight weeks (three-times per week) of flexibility conditioning (hip region/knee flexor musculature; dominant limb) involving either proprioceptive neuromuscular facilitation (PNF) (n=9) or passive stretching (PASS) (n=9). Both modes of flexibility conditioning are popular within contemporary exercise and clinical settings and have demonstrated efficacy in improving range of motion. The contralateral limb and a prior ‘no exercise’ condition were used as controls. The PNF and PASS modes of conditioning improved passive hip flexibility to a similar extent (mean 19.3% vs. baseline, intervention limb, p<0.01) but did not alter knee flexor strength (overall mean 309.6±81 N) or sensorimotor performance (force and positional errors: 2.3±8.2% and 0.48±7.1%). Voluntary and magnetically evoked electromechanical delays (EMDV and EMDE, respectively) were increased but to a greater extent following PASS compared to PNF (PASS: 10.8% and 16.9% lengthening of EMDV and EMDE, respectively vs. PNF: 3.2% and 6.2%, p<0.01).The attenuated change to electromechanical delay (EMD) performance during PNF conditioning suggests a preserved capability for rapid muscle activation, which is important in the maintenance of dynamic joint stability. That PNF was also equally efficacious in flexibility conditioning would suggest that this mode of flexibility training should be used over passive to help preserve dynamic joint stability capabilities at this extended and vulnerable joint position.  相似文献   
6.
目的:探讨有规律的24式简化太极锻炼对老年女性膝、踝关节运动觉的影响。方法:36名无跌倒史的老年女性(60~65岁)随机分成年龄、身高、体重相匹配的太极组与对照组。采用膝、踝关节本体感觉测试仪在20周前后,分别对两组受试者优势腿的膝、踝关节运动觉进行测试。结果:1)20周后太极组膝关节的屈、伸运动觉在原有基础上显著改善(屈减小了37.2%、P =0.045,伸减小了25.1%、P =0.017),太极组与对照组相比,膝关节屈、伸运动觉具显著性差异(屈减小了33.3%、P =0.039,伸减小了21.6%、P =0.021);2)20周后,太极组踝关节屈运动觉显著减小(屈减小了21.8%、P =0.030)。太极组与对照组相比表现出屈显著减小(屈减小了16.5%、P =0.042)。结论:20周的太极锻炼显著改善了老年女性膝关节屈伸和踝关节屈的运动觉,但是对踝关节伸改善不显著。  相似文献   
7.
This study aimed to compare knee joint position sense of roller hockey players with an age-matched group of non-athletes. Forty-three male participants voluntarily participated in this cross-sectional study: 21 roller hockey players (mean age: 23.2 ± 4.2 years old, mean weight: 81.8 ± 9.8 kg, mean height: 180.5 ± 4.1 cm) and 22 age-matched non-athletes (mean age: 23.7 ± 3.9 years old, mean weight: 85.0 ± 6.2 kg, mean height: 181.5 ± 5.0 cm). Knee joint position sense of the dominant limb was evaluated using a technique of open-kinetic chain and active knee positioning. Joint position sense was reported using absolute, relative and variable angular errors. The main results indicated that the group of roller hockey players showed significantly lower absolute (2.4 ± 1.2º vs. 6.5 ± 3.2º, p ≤ 0.001) and relative (1.7 ± 2.1º vs. 5.8 ± 4.4º, p ≤ 0.001) angular errors in comparison with the non-athletes group. In conclusion, the results from this present study suggest that proprioceptive acuity, assessed by measuring joint position sense, is increased in roller hockey players. The enhanced proprioception of the roller hockey players could contribute to injury prevention and improved performance during sporting activities.  相似文献   
8.
目的:研究低频、中频、高频三种不同频率的振动训练对篮球运动员踝关节本体感觉的影响。方法:在我校招募78例篮球运动员作为受试对象,按照干预方法不同将受试者分为低频组、中频组、高频组和对照组。低频组、高频组各20例,中频组、对照组各19例,干预组29例。对照组进行常规体能训练,低频组在对照组的基础上给予振动频率为20Hz;振动幅度为3mm的振动训练干预;中频组在对照组的基础上给予振动频率为30Hz;振动幅度为3mm的振动训练干预;高频组在对照组的基础上给予振动频率为45Hz;振动幅度为3mm的振动训练干预。10min/次,4次/周,在干预前及干预8周后测量受试者右侧踝关节的位置觉、肌肉力觉和运动觉。结果:组内比较中,干预8周后低频组、中频组、高频组的位置觉、肌肉力觉、运动觉与干预前比较均有显著性差异,具有统计学意义(P<0.05)。组间比较中,干预8周后低频组、中频组、高频组的定位角度与复位角度之间误差角度值、目标力矩与复现力矩之间误差值、感觉阈值均显著小于对照组,组间的位置觉、肌肉力觉、运动觉有统计学差异(P<0.05);高频组的位置觉明显优于中频组,肌肉力觉和运动觉明显优于低频组,组间有显著性差异,有统计学意义(P<0.05)。结论:低频、中频、高频三种不同频率的振动训练均能够提高篮球运动员踝关节的位置觉、肌肉力觉和运动觉,从而提高本体感觉,其中以高频振动效果最为显著。  相似文献   
9.
ABSTRACT

Aiming to evaluate the prevalence of unilateral/bilateral patellofemoral pain (PFP) among young dancers, and to investigate whether different factors are associated with PFP in young dancers, 132 dancers aged 12–14 years were assessed for PFP. Anthropometric parameters, proprioception ability, dynamic postural balance (DPB), and muscle strength were measured. PFP was found in 64.1% of the dancers. No significant differences in the prevalence of dancers with no, unilateral, or bilateral PFP at different ages were found. Significant age effects were found for anthropometric and developmental measurements, and for intensity of training. PFP effect was found for DPB asymmetry, ankle proprioception, and leg-length %height. A higher hip abductor/adductor ratio was associated with PFP in 14-year-old dancers. Binomial logistic regression showed that increased number of hours per day (h/day) and decreased number of hours per week (h/week), low proprioception scores, greater leg length as %height, and more anterior DPB asymmetry were significant predictors of PFP. In conclusion: unilateral/bilateral PFP is common among young dancers. Body morphology, reduced ankle proprioception ability, DPB asymmetry, and increased h/day of practice are associated with PFP. Dance teachers should start monitoring the impact of training and implement injury modification/prevention strategies when their students are at a young age.  相似文献   
10.
目的:研究动态平衡训练对膝关节位置觉的干预效果及其预防损伤机制,比较平衡板、平衡气囊、瑞士球训练方法改善下肢本体感觉功能的效果,为预防运动损伤提供理论依据和实践指导.方法:41名受试者分成平衡板平衡气囊训练组(n=13),瑞士球训练组(n=14),对照组(n=14),训练时间共8周,每周3次,每次练习50分钟,8周训练前后测试膝关节主动和被动位置觉.结果:①8周平衡板气囊训练和瑞士球训练后,男女受试者右膝关节位置觉(主动和被动)比训练前减小但无显著性差异(P>0.05);②平衡板气囊组与瑞士球组在改善膝关节位置觉无显著差异(P >0.05).结论:8周动态平衡训练时间较短不足以使膝关节位置觉显著改变,但训练后位置觉平均误差减小,表明平衡板气囊训练和瑞士球训练对改善膝关节位置觉感知能力有积极意义.  相似文献   
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