自由式滑雪空中技巧的特点是技术要素,包括力量,灵活性和平衡性。天线的核心稳定性可以提高运动性能。
目的:本研究旨在分析8周核心稳定性训练对天线的核心稳定性能的影响。
方法:参与者被随机分配到对照组(CG;n=4男5女;年龄15.89±1.54岁;身高163.11±6.19cm;体重55.33±5.07Kg)和训练组(TG;n=4男5女;年龄16.11±2.47岁;身高161.56±5.25cm;体重57.56±8.11Kg)。身体形状,核心稳定性的性能,在8周的核心稳定性训练后测量着陆动力学。采用独立样本t检验比较组间基线值。使用双向重复测量方差分析(ANOVA)(时间×组)。
结果:TG改善了身体形状,和腰围(t=-2.333,p=0.020)。性能稳定,深蹲(t=-4.082,p=0.004),躯干屈曲等距试验(t=-4.150,p=0.003),躯干横向弯曲等轴测试验(t=-2.668,p=0.008),躯干旋转等距试验(t=-2.666,p=0.008),侧桥(t=-2.666,p=0.008),背部过度伸展(t=-4.116,p=0.003),单足三级跳远(t=-4.184,p=0.003),闭眼单腿平衡(t=4.167,p=0.003)。着陆动力学性能,结束/阶段(t=-4.015,p=0.004),矢状轴(t=-4.598,p=0.002),额轴(t=3.116,p=0.014),峰值功率髋关节变化范围(t=2.666,p=0.017),峰值功率拐点变化范围(t=2.256,p=0.049)。
结论:核心稳定性训练可改善体形,核心稳定性的性能,着陆动力学。因此,这些改进可以提高空中技巧比赛的运动表现。
Freestyle skiing aerials are characterized by technical elements including strength, flexibility and balance. Core stability in aerials can improve sporting performance.
OBJECTIVE: This study aimed to analyze the effect of 8 weeks of core stability training on core stability performance in aerials.
METHODS: Participants were randomly assigned to a control group (CG; n = 4male + 5female; age 15.89 ± 1.54 years; height 163.11 ± 6.19 cm; weight 55.33 ± 5.07 Kg) and a training group (TG; n = 4male+5female; age 16.11 ± 2.47 years; height 161.56 ± 5.25 cm; weight 57.56 ± 8.11 Kg). Body shape, the performance of core stability, and landing kinetics were measured after 8 weeks of core stability training. Independent sample t-tests were used to compare baseline values between groups. A two-way repeated-measures analysis of variance (ANOVA) (time × group) was used.
RESULTS: The TG improved body shape, and waist circumference (t = -2.333, p = 0.020). Performance of core stability, squat (t = -4.082, p = 0.004), trunk flexion isometric test (t = -4.150, p = 0.003), trunk lateral bending isometric test (t = -2.668, p = 0.008), trunk rotation isometric test (t = -2.666, p = 0.008), side bridge (t = -2.666, p = 0.008), back hyperextension (t = -4.116, p = 0.003), single foot triple jump (t = -4.184, p = 0.003), and single-leg balance with eyes closed (t = 4.167, p = 0.003). Performance in landing kinetics, End/Phase (t = -4.015, p = 0.004), sagittal axes (t = -4.598, p = 0.002), frontal axis (t = 3.116, p = 0.014), peak power hip changing range (t = 2.666, p = 0.017), peak power knee changing range (t = 2.256, p = 0.049).
CONCLUSIONS: Core stability training leads to improvements in body shape, the performance of core stability, and landing kinetics. Therefore, these improvements can improve the sporting performance in aerials competitions.