共查询到17条相似文献，搜索用时 109 毫秒
1.
不同频率振动训练对下肢爆发力和柔韧性的即时影响研究 总被引：1，自引：0，他引：1
目的:通过观察不同频率下短时振动训练对普通人群原地纵跳能力和下肢柔韧性的影响,了解作为准备活动的短时振动训练对人体下肢爆发力和柔韧性的作用,并分析振动频率与训练效果的关系,以更好地将振动训练应用于实践;研究方法:振动训练对象为31名(14男、17女)普通大学生,分别接受30 Hz、35 Hz、40 Hz、45 Hz的全身振动训练,振幅2 mm,每种频率每次共训练5 min.并于训练前、后接受心率、柔韧和下肢纵跳能力测试;结果与结论:振动训练后心率有显著提高,但心率提高幅度与振动频率无关.振动训练并没有使所有受试者下肢柔韧性和下蹲跳成绩得到提高.振动训练没有使女性受试者下蹲跳时下肢最大功率提高,但低频振动训练可以即时提高男性受试者下肢最大蹬伸功率,30 Hz是提高男受试者下肢蹬伸功率的最佳训练频率. 相似文献
2.
不同频率全身振动刺激对运动员下肢肌群力量训练效果的对比研究 总被引：2，自引：0，他引：2
采用PHYSIO PLATE振动训练台,对北京优秀垒球、女子游泳及女子跳水运动员进行同振幅下不同频率振动刺激力量训练,并采用MERAC等速肌力测试系统,对实验前后以及实验中运动员下肢肌力变化情况进行对比研究。研究发现,抗负荷力量训练附加振动刺激可以有效地提高力量训练的效果,能够以相对较小的负荷有效地提高肌肉的最大力量、爆发力以及肌肉耐力;同振幅下,次高频(35Hz～50Hz)振动刺激对肌肉最大力量、快速力量、爆发力以及肌肉耐力的训练效果显著高于中低频(25Hz～35Hz)振动刺激。 相似文献
3.
贺子萱 《体育科技文献通报》2022,(2)
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
4.
将振动训练运用在速滑运动员力量训练中,经过8周训练后观察训练效果,以探讨振动训练对速滑运动员下肢力量的改善效应。将16名吉林省速滑队女运动员分为两组,分别采用常规力量训练与常规训练和振动训练相结合的方式训练。实验结果表明:8周振动频率为30Hz,振幅为2mm的振动训练与常规力量训练相结合,能够有效地提高速滑运动员力量的训练效果。尽管8周振动力量训练对提高速滑运动员下肢肌群的最大力量无明显优势,但能显著性提高下肢肌群爆发力与耐力水平,同时能够有效提高速滑运动员的下蹲跳成绩。 相似文献
5.
振动力量训练综合效果研究 总被引：4，自引：0，他引：4
张自刚 《西安体育学院学报》2009,26(5)
一般认为,振动训练可以引起人体器官机能一系列的适应性变化,反射性地引起力量的增加.但训练效果由于受震动特性频率(Hz)、振幅(mm)以及施用方法和训练方式训练类型、训练强度、训练量、训练的频次、训练和间歇时间等众多因素的影响,其力量增加的机理较为复杂.未来的研究应致力于研究长期的振动刺激对人体器官机能的影响以及提高特定的系统功能应采取的负荷与实施方案. 相似文献
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不同振动模式中小腿肌肉的诱发激活特征比较研究 总被引：5，自引：3，他引：2
李玉章 《天津体育学院学报》2010,25(4):336-339
振动训练作为一种新型的力量训练手段被广泛地运用，但是，低频率的垂直振动与多维组合振动对下肢肌群激活特征的研究结果尚不明确。
分析不同振动模式下、不同振动频率的全身振动刺激对小腿肌群的表面肌电影响。对20 名健康的大学生进行测试，结果发现：振动刺激能够增大肌
肉的放电量；但在多维组合振动中，随振动频率增加，肌肉的激活程度呈阶梯状递增，存在明显的强度梯度，并且在对肌肉的协调激活和针对性激活
上优于单维垂直振动。这为今后如何运用振动训练提供参考，为人们正确认识振动训练的作用和使用方法提供理论依据。 相似文献
8.
附加振动刺激的负重半蹲运动成为一种新兴的下肢力量训练手段,但是,负重半蹲运动中附加不同频率的振动刺激对下肢肌肉的激活特征研究较少。以10名健康男性大学生在不附加振动、分别附加频率为30、40、50Hz共计4种振动刺激条件以及无负重和负重30%最大力量两种负荷条件下完成10次半蹲起的大腿表面肌电活动特征进行研究。实验结果经双因素方差分析,振动刺激对所有被检肌肉肌电均方根值(EMGrms)有显著影响(P<0.05),负重对股直肌、股内侧肌和股外侧肌EMGrms有极显著性影响(P<0.01),对股二头肌和半腱肌无显著影响;振动刺激和负重对各被检测肌肉肌电交互作用不显著。多重比较表明,50Hz的振动频率可以显著提高被检肌群的EMGrms。结论:30%1RM负重可以提高股直肌、股内侧肌和股外侧肌的肌肉激活,但不能增加股二头肌和半腱肌的肌肉激活。无论是否负重,半蹲起练习时附加振动频率为50 Hz的振动刺激可以显著增加大腿肌肉激活(P<0.05)。 相似文献
9.
振动训练--提高肌肉力量的有效辅助手段 总被引：1，自引：0，他引：1
振动训练（Vibration Training）与常规阻力训练的组合被认为比传统单一的阻力训练效果更好。尽管在当前有关振动训练作用的研究中，缺乏在实验条件上的严格控制，但该领域的研究结果表明，振动能对肌肉力量和做功能力的提高有急性和长期训练作用。然而，振动对于发展肌肉力量和做功能力的作用是由它自身特性（实施方法、振幅和振动频率）与训练安排（训练类型、训练强度和训练负荷量）所决定的。振幅和振动频率决定了振动对神经肌肉系统的负荷强度。而振动负荷应控制在最佳范围内才能达到增强肌肉力量和做功能力的效果，且刺激肌肉最有效的振动频率应控制在30～50Hz。虽然目前最理想的振幅还未确定，但小振幅似乎对于提高肌肉力量来说还是不够的。然而，需要强调并注意的是：振动的应用方法（振动对靶肌肉组织的直接刺激或间接刺激）可能会影响传递到肌肉组织的振幅和振动频率量级，因此，它也可能影响振动训练的效果。在振动训练过程中，振动的强度和负荷量越大，肌肉力量和做功能力的提高越明显。另外，振动训练提高优秀运动员肌肉力量和做功能力的效果远比非优秀运动员的明显。 相似文献
10.
目的:通过对下肢进行振动牵拉和PNF牵拉柔韧性训练,分析比较振动牵拉训练和PNF牵拉训练的不同效果,了解振动牵拉训练对人体下肢柔韧性的帮助,以便可以更好地将振动牵拉训练应用于实践和训练之中;研究方法:运用振动训练仪和PNF牵拉的方法对人体下肢进行柔韧性训练,振动牵拉训练组和PNF牵拉训练组各进行2min的柔韧性训练,振动组用POWER PLATE进行牵拉训练,振幅2mm,振频为30Hz。在柔韧性训练前、后通过坐位体前屈测量仪定量测定下肢柔韧度的数据作为比较的依据;结果与结论:振动牵拉训练组较PNF牵拉训练组柔韧性提高更明显。 相似文献
11.
Naser Nawayseh 《Sports biomechanics / International Society of Biomechanics in Sports》2019,18(5):482-500
Little is known about the transmission of vibration to the head when using whole-body vibration (WBV) training machines. This paper investigates the effect of frequency and posture on the transmission of vibration from a vibrating plate to the head of standing people. Nine male participants were exposed to vertical vibration at nine frequencies in the range of 17–46 Hz and vibration acceleration in the range of 7.85–18.64 m/s2 (peak). The participants adopted four standing postures described as standing with locked knee (LK), bent knee (BK), one leg (OL), and one foot to the front and the other to the back (FB). The transmissibility to the head differed among postures (t-test, p < 0.05) and was greatest with the FB posture and smallest with the BK posture. The transmissibility to the head decreased with increasing the frequency (t-test, p < 0.05) but the extent of the decrease depended on the adopted posture. This frequency-posture interaction effect on the transmissibility should be considered when designing a training program. The data will be useful for developing standards/protocols that govern the use of WBV machines as well as for building human body models that can predict potential risks arising from using WBV machines. 相似文献
12.
In this study, we examined the effect of string vibration damping devices on reducing racket frame vibration transfer to the forearm. Twenty participants volunteered to hold a tennis racket stationary in a forehand and backhand stroking position while tennis balls were fired at 20 m?·?s?1 towards two impact locations, the node of vibration and the dead spot. A three-way analysis of variance with repeated measures on damping condition, impact location and stroke condition was performed on the data. The resonant frequency of the hand-held racket was found to be ～120 Hz. No significant differences in amplitude of vibration at the resonant frequency were found for the wrist or the elbow when damped and non-damped impacts were compared. Impacts at the dead spot produced greater amplitudes of vibration (P <?0.01) but no interaction between impact location and string dampers was evident. The string dampers had no effect on the grip force used or the muscle electrical activity in the forearm after impact. In conclusion, we found that string dampers do not reduce the amount of racket frame vibration received at the forearm. We suggest that string dampers remain a popular accessory among tennis players because of their acoustic effects and psychological support rather than any mechanical advantage. 相似文献
13.
Bicycle suspensions aim to improve riding performance and rider comfort through reduced impact and vibration transmission
to frame and rider. This study compared vibration damping of five mountain bike suspension systems and a rigid fork on gravel
and in trail conditions by quantifying accelerations at the axle and frame. Spectral analyses of the acceleration signals
revealed two distinct frequency regions from 0 to about 100 Hz and from about 300 to 400 Hz. The various suspension systems
were all effective in attenuating vibration over the low frequency region. Vibration amplitudes at the frame were considerably
less than at the axle for the suspension conditions (30–60% reduction) while only minor attenuation was observed with the
rigid fork (10–15%). In the high frequency region between 300–400 Hz, the signal was strongly attenuated at the frame for
all conditions, including the rigid fork. Trail conditions elicited greater amplitude low frequency vibrations than did gravel
conditions. While all suspension systems were somewhat effective in reducing vibration of the frame, air-oil forks had significantly
better vibration attenuation than did elastomer or linkage systems. 相似文献
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Marcela Munera William Bertucci Sebastien Duc Xavier Chiementin 《Sports biomechanics / International Society of Biomechanics in Sports》2016,15(4):409-428
Whole body vibration (WBV) is used as a training method but its physical risk is not yet clear. Hence, the aim of this study is to assess the exposure to WBV by a measure of acceleration at the lower limb under dynamic and static postural conditions. The hypothesis of this paper is that this assessment is influenced by the frequency, position, and movement of the body. Fifteen healthy males are exposed to vertical sinusoidal vibration at different frequencies (20–60 Hz), while adopting three different static postures (knee extension angle: 180°, 120° and 90°) or performing a dynamic half-squat exercise. Accelerations at input source and at three joints of the lower limb (ankle, knee, and hip) are measured using skin-mounted accelerometers. Acceleration values (g) in static conditions show a decrease in the vibrational dose when it is measured at a more proximal location in the lower extremity. The results of the performed statistical test show statistically significant differences (p < 0.05) in the transmissibility values caused by the frequency, the position, and to the presence of the movement and its direction at the different conditions. The results confirm the initial hypothesis and justify the importance of a vibration assessment in dynamic conditions. 相似文献
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Acute whole body vibration training (WBVT) is a tool used amongst coaches to improve performance prior to activity. Its effects on other fitness components, such as balance and stability, along with how different populations respond are less well understood. The aim of the current research is to determine the effect of acute WBVT on balance and stability amongst elite and amateur soccer players. Forty-four healthy male soccer players (22 elite and 22 amateur) were assigned to a treatment or control group. The intervention group then performed 3 × 60 seconds static squat on vibration platform at 40 Hz (±4 mm) with Y balance test (YBT) scores and dynamic postural stability index (DPSI) measured pre and post. DPSI was significantly lower in the elite players in the acute WBVT compared to amateur players (F1, 40= 6.80; P = 0.013). YBT anterior reach distance showed a significant improvement in both amateur and elite players in the acute WBVT group (F1, 40= 32.36; P < 0.001). The improvement in DPSI amongst the elite players indicates a difference in responses to acute high frequency vibration between elite and amateur players during a landing stability task. The results indicate that acute WBVT improves anterior YBT reach distances through a possible improvement in flexibility amongst both elite and amateur players. In conclusion, acute WBVT training appears to improve stability amongst elite soccer players in comparison to amateur players, the exact reasoning behind this difference requires further investigation. 相似文献