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通过常见的场地评估预测重复力量能力:重复力量能力是一种独特的身体素质吗?

Predicting repeat power ability through common field assessments: is repeat power ability a unique physical quality?

机构信息

Faculty of Health Sciences and Medicine, Bond University, Gold Coast, Queensland, Australia.

Sport Science, New South Wales Institute of Sport, Sydney Olympic Park, New South Wales, Australia.

出版信息

PeerJ. 2024 Jan 23;12:e16788. doi: 10.7717/peerj.16788. eCollection 2024.

Abstract

BACKGROUND

The repeat power ability (RPA) assessment is used to test the ability to repeatedly produce maximal ballistic efforts with an external load. The underpinning physical qualities influencing RPA are undetermined. This study aimed to gain further insight into the physical qualities that determine RPA by analysing the association between physical qualities and an assessment of RPA.

MATERIALS AND METHODS

Ten well-trained male field hockey players performed an RPA assessment consisting of 20 repetitions of loaded countermovement jumps (LCMJ20), with a percent decrement score of peak power output calculated. Over a two-week period, each participant performed the YoYo Intermittent Recovery Test 2 (IRT2), a repeated speed ability assessment incorporating a 180° change of direction (RSA), a 40-meter linear speed test (40 mST), an isometric mid-thigh pull (IMTP), a countermovement jump (CMJ), and a 3-repetition maximum half squat (HS) assessment. Pearson's correlation analysis was used to determine the strength of relationships between each assessment variable and the LCMJ20. The assessment variables with the strongest relationships within each assessment were used in a stepwise multiple linear regression analysis to determine the best predictor model of LCMJ20.

RESULTS

RSApercent decrement score (RSA% had a very strong, significant relationship with LCMJ20 ( = 0.736:  < 0.05). HS relative strength (HSrel) was found to have a significant and very strong, negative relationship with LCMJ20 ( =  - 0.728:  < 0.05). Stepwise multiple linear regression analysis showed RSA180 to explain 48.4% of LCMJ20 variance (Adjusted = 0.484) as the only covariate included in the model.

CONCLUSION

The findings indicate that RSA as a repeated high intensity effort (RHIE) task is strongly related to LCMJ20 and is also the best predictor of LCMJ20. This may suggest that RPA can provide practitioners with information on RHIE performance. The variance between assessment methods indicates that RPA may be a distinct physical quality, future research should assess other physical capacities to better understand the factors contributing to RPA.

摘要

背景

重复功率能力(RPA)评估用于测试使用外部负载重复产生最大爆发力的能力。影响 RPA 的潜在身体素质尚不确定。本研究旨在通过分析身体素质与 RPA 评估之间的关联,进一步深入了解决定 RPA 的身体素质。

材料和方法

10 名训练有素的男性曲棍球运动员进行了 RPA 评估,包括 20 次负重反跳(LCMJ20),计算出最大功率输出的递减分数。在两周的时间内,每位参与者都进行了 YoYo 间歇性恢复测试 2(IRT2),这是一项包含 180°变向(RSA)的重复速度能力评估,40 米直线速度测试(40 mST),等长大腿拉力(IMTP),反跳(CMJ)和 3 次最大半蹲(HS)评估。Pearson 相关分析用于确定每个评估变量与 LCMJ20 之间关系的强度。在每个评估中具有最强关系的评估变量用于逐步多元线性回归分析,以确定 LCMJ20 的最佳预测模型。

结果

RSA%的递减分数(RSA%与 LCMJ20 呈很强的正相关(r=0.736:<0.05)。HS 相对强度(HSrel)与 LCMJ20 呈显著且很强的负相关(r=-0.728:<0.05)。逐步多元线性回归分析表明,RSA180 可以解释 LCMJ20 方差的 48.4%(调整 r2=0.484),是模型中唯一包含的协变量。

结论

研究结果表明,RSA 作为一项重复高强度努力(RHIE)任务与 LCMJ20 密切相关,也是 LCMJ20 的最佳预测指标。这可能表明 RPA 可以为从业者提供有关 RHIE 表现的信息。评估方法之间的差异表明,RPA 可能是一种独特的身体素质,未来的研究应评估其他身体素质,以更好地了解影响 RPA 的因素。

https://cdn.ncbi.nlm.nih.gov/pmc/blobs/7b50/10812577/801b40067b84/peerj-12-16788-g001.jpg

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