Optimizing warm-up efficiency: Impact of repetitions in straight leg raises on hip and knee flexibility in individuals with and without hamstring tightness

IF 0.6 4区医学 Q4 ENGINEERING, BIOMEDICAL

Isokinetics and Exercise Science Pub Date : 2024-07-03 DOI:10.3233/ies-240049

Wootaek Lim

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引用次数: 0

Abstract

BACKGROUND: Warm-up exercises are often recommended to enhance flexibility, reduce the risk of injury, and improve performance. However, the optimal number of warm-up repetitions remains unclear. Additionally, the previously suggested sit-and-reach test may not be suitable for efficiently stimulating the target muscles. OBJECTIVE: This study investigated the effects of a warm-up consisting of 15 straight leg raise (SLR) repetitions on hip and knee flexibility by comparing individuals with and without hamstring tightness (HT and NoHT, respectively). METHODS: Thirty healthy adults were classified as having HT or NoHT based on their SLR angle before warm-up. The participants performed 15 repetitions of the SLR as warm-up, followed by hip and knee flexibility tests. RESULTS: Warm-ups significantly improved hip and knee flexibility in both HT and NoHT groups. Improvements in flexibility were not significantly different between groups. The most notable increase in flexibility was observed between the sixth and ninth SLR trials. CONCLUSIONS: The clinical utility of a warm-up consisting of 15 SLR repetitions is supported by this study, as a substantial increase in hip flexibility was observed in all participants regardless of HT. In clinical settings, a maximum of 10 repetitions may be sufficient to achieve optimal results.

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优化热身效率：直腿抬高的重复次数对腿筋紧绷者和无腿筋紧绷者髋关节和膝关节灵活性的影响

背景：热身运动通常被推荐用于增强灵活性、降低受伤风险和提高运动表现。然而，热身运动的最佳重复次数仍不明确。此外，之前建议的坐立-伸展测试可能并不适合有效刺激目标肌肉。目的：本研究通过比较腘绳肌紧绷者和非腘绳肌紧绷者（分别为 HT 和 NoHT），研究由 15 次直腿抬高（SLR）重复动作组成的热身对髋关节和膝关节灵活性的影响。方法：根据热身前的直腿抬高角度，将 30 名健康成年人分为 HT 和 NoHT 两类。参与者在热身时重复 15 次单杠，然后进行髋关节和膝关节柔韧性测试。结果：热身明显改善了 HT 组和 NoHT 组的髋关节和膝关节柔韧性。各组在柔韧性方面的改善没有明显差异。最明显的柔韧性提高出现在第六次和第九次 SLR 试验之间。结论：本研究支持由 15 次 SLR 重复动作组成的热身的临床实用性，因为无论是否进行 HT，所有参与者的髋关节柔韧性都有显著提高。在临床环境中，最多重复 10 次可能就足以达到最佳效果。

本文章由计算机程序翻译，如有差异，请以英文原文为准。

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来源期刊

Isokinetics and Exercise Science 医学-工程：生物医学

CiteScore

1.20

自引率

14.30%

发文量

审稿时长

>12 weeks

期刊介绍： Isokinetics and Exercise Science (IES) is an international journal devoted to the study of theoretical and applied aspects of human muscle performance. Since isokinetic dynamometry constitutes the major tool in this area, the journal takes a particular interest in exploring the considerable potential of this technology. IES publishes studies associated with the methodology of muscle performance especially with respect to the issues of reproducibility and validity of testing, description of normal and pathological mechanical parameters which are derivable from muscle testing, applications in basic research topics such as motor learning paradigms and electromyography. The journal also publishes studies on applications in clinical settings and technical aspects of the various measurement systems employed in human muscle performance research. The journal welcomes submissions in the form of research papers, reviews, case studies and technical reports from professionals in the fields of sports medicine, orthopaedic and neurological rehabilitation and exercise physiology.

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