利用等长大腿中部拉力预测女性运动员三次重复最大深蹲值

IF 2.2 Q2 SPORT SCIENCES Sports Pub Date : 2024-08-26 DOI:10.3390/sports12090230
Keely Pasfield, Nick Ball, Dale Wilson Chapman
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引用次数: 0

摘要

在以力量和力量为基础的运动中,规定正确的训练负荷对提高运动员的成绩至关重要。与此同时,为制定训练负荷而进行的力量测试应准确、安全,并将对运动员造成的干扰或疲劳降至最低。本研究的目的是利用等长大腿中部牵拉和基本人体测量评估,为女运动员的三次重复最大负重(3RM)深蹲制定一个预测方程,以实际应用于支持训练处方。我们招募了来自不同竞技水平的网球、排球、篮球和足球女运动员(n = 34)。记录每位运动员的体重、站立身高、坐位身高、臂展和双侧胸廓宽度,然后,在至少相隔 48 小时的不同场合,每位运动员分别完成 3RM 深蹲测试和等长大腿中部牵拉(IMTP)评估。IMTP变量包括峰值力和50、100、150、200和250毫秒时的随时间变化的力,以及人体测量数据,这些数据被用于建立预测方程。深蹲力量与峰值力量(r = 0.386)、100 毫秒(r = -0.128)、150 毫秒(r = -0.040)和 200 毫秒(r = -0.034)时的力量、站立高度(r = 0.294)和双髋关节宽度(r = -0.410)呈低度到中度相关。使用峰值力和 100 毫秒时的力,逐步多元回归可显著(p < 0.05)解释 26% 的 3RM 深蹲力量变化,得出以下公式:预测 3RM 深蹲(公斤)= [6.102 + (峰值力 × 0.002) - (100毫秒力 × 0.001)]2。报告中的公式的预测准确性是在对一个子队列(n = 14)的运动员进行 6-8 周的训练后,使用相同的测试方案进行测试的。预测值和实际记录的 3RM 值没有明显差异(p = 0.313),支持使用 IMTP 作为一项测试,为训练处方的预测方程提供信息值,从而减少测试和对女性运动员造成的疲劳。然而,95% CI(-4.18-12.09)表明预测值可能相差超过 10 千克。这种差异可能会导致运动员的训练计划负荷过大,因此在使用所述方法预测3RM深蹲值以制定训练计划时应谨慎。
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Using the Isometric Mid-Thigh Pull to Predict Three-Repetition Maximum Squat Values in Female Athletes
Prescribing correct training loads in strength- and power-based sports is essential to eliciting performance improvements for athletes. Concurrently, testing strength for the prescription of training loads should be accurate and safe with minimal disruption or fatigue inducement to the athlete. The purpose of this study was to develop a prediction equation in female athletes for the three-repetition maximum (3RM) squat using the isometric mid-thigh pull and basic anthropometric assessments that could be practically applied to support training prescriptions. Female athletes (n = 34) were recruited from netball, volleyball, basketball, and soccer across a spectrum of competitive standards. Each athlete’s weight, standing height, seated height, arm span, and biacromial breadth were recorded, and then, on separate occasions separated by at least 48 h, each athlete completed a 3RM squat test and an isometric mid-thigh pull (IMTP) assessment. IMTP variables of peak force and time-dependent force at 50, 100, 150, 200, and 250 ms, as well as anthropometric measures, were used to develop a prediction equation. Squat strength was low-to-moderately correlated with peak force (r = 0.386); force at 100 ms (r = −0.128), 150 ms (r = −0.040), and 200 ms (r = −0.034); standing height (r = 0.294); and biacromial breadth (r = −0.410). Stepwise multiple regression significantly (p < 0.05) explained 26% of the 3RM squat strength variation using peak force and force at 100 ms, resulting in the following equation: Predicted 3RM squat (kg) = [6.102 + (Peak Force × 0.002) − (Force@100 ms × 0.001)]2. The reported equation’s predictive accuracy was tested using the same testing protocols following 6–8 weeks of training in a sub-cohort of athletes (n = 14). The predicted and actual recorded 3RM values were not significantly (p = 0.313) different, supporting the use of the IMTP as a test that contributes informative values for use in a predictive equation for training prescription and thus reducing the testing and fatigue-inducing impost on female athletes. However, the 95% CI (−4.18–12.09) indicated predicted values could differ in excess of 10 kg. This difference could lead to an excessive load prescription for an athlete’s training program, indicating caution should be taken if using the described method to predict 3RM squat values for programming purposes.
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来源期刊
Sports
Sports SPORT SCIENCES-
CiteScore
4.10
自引率
7.40%
发文量
167
审稿时长
11 weeks
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