Effects of Static and Dynamic Stretching Exercises on Unilateral Hamstring to Quadriceps Strength Ratio

Nikolina Gerdijan,Dušan Perić,Adriana Ljubojević,Željko Vukić

doi:10.4236/ape.2021.111007

Nikolina Gerdijan, Dušan Perić + Show 2 more

Open Access

https://doi.org/10.4236/ape.2021.111007

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Journal: Advances in Physical Education	Publication Date: Dec 30, 2020
Citations: 2	License type: CC BY 4.0

Affiliation: Educons University

Abstract

Traditional warm-up in sport contents the stretching. The stretching effects are a frequent subject of research in physical education, but the results are conflicting. The aim of current study is to check how acute stretching (static and dynamic) influences to the strength of hamstring and quadriceps, as well as their mutual ratio. These variables were monitored at different velocities of contraction (60 and 240&#186/s). On the sample of 10 students in good health, modern isokinetic diagnostics (4000 Hz the sampling rate) was applied. Higher strength values in both muscle groups were measured during slow contraction, while HRQ values were higher during fast contractions. The results show that the muscle strength of hamstring and quadriceps can be increased by applying acute stretching (p p > 0.05). The same conclusions were drawn for both low and high contraction velocities.

Highlights

Many athletes perform pre-exercise stretching as an integral part of their warm-up activities, as to maximize the sport performance and prepare the body for training sessions or competition
The results show that the muscle strength of hamstring and quadriceps can be increased by applying acute stretching (p < 0.05), but at the same time the hamstring to quadriceps ratio (HQR) does not change significantly (p > 0.05)
Gerdijan et al stretching on isokinetic muscle performance in young healthy males and, in particular, to determine whether any of these techniques would lead to short-term changes in isokinetic power and HQR output of the knee flexors and extensors

Summary

Introduction

Many athletes perform pre-exercise stretching as an integral part of their warm-up activities, as to maximize the sport performance and prepare the body for training sessions or competition. The stretching effects are a frequent subject of research in sports and physical education. Results from different researches are often conflicting. Variations in methodology and testing protocols compromise the comparison between published data in literature

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