Effects of Six-week Hopping Exercise on Time to Stabilization and Perceived Stability in Athletes With Chronic Ankle Instability During Single-leg Jump-landing

Karimizadeh Ardakani, Mohammad; Minoonejad, Hooman; Wikstrom, Erik; Rajabi, Reza; Sharifnezhad, Ali

doi:10.32598/JESM.11.2.1

Effects of Six-week Hopping Exercise on Time to Stabilization and Perceived Stability in Athletes With Chronic Ankle Instability During Single-leg Jump-landing

Document Type : Research Paper

Authors

Mohammad Karimizadeh Ardakani ¹

Hooman Minoonejad ¹

Erik Wikstrom ²

Reza Rajabi ²

Ali Sharifnezhad ³

¹ Department of Sports Medicine and Health, Faculty of Physical Education And Sport Science, University of Tehran, Tehran, Iran.

² Department of Exercise and Sport Science, University of North Carolina at Chapel Hill, North Carolina, USA.

³ Department of Biomechanics, Sport Science Research Institute, Tehran, Iran.

10.32598/JESM.11.2.1

Abstract

Introduction: To examine the effects of a 6-week hopping exercise program on time to stabilization and perceived stability among athletes with chronic ankle instability. This is a randomized controlled trial.
Materials and Methods: A total of 28 basketball players with chronic ankle instability (Mean±SD age; 22.67±2.88 y, Mean±SD weight: 80.47±8.48 kg, Mean±SD height: 186.82±3.09 cm) participated in this study and were randomly divided into two equal groups of 14 people each: 1. Experimental; and 2. Control. The experimental group performed hop exercises 3 times per week for 6 weeks. The control group received no intervention. Time to stabilization for anterior-posterior and medial-lateral components of ground reaction force, as well as ankle joint function assessment tool were found before and immediately after the exercise program. Descriptive statistics, independent t-test, and paired sample t-test were used to analyze the data at the significance level of 95% (α≤0.05).
Results: The 6-week hopping exercise program led to a significant decrease in the time to stabilization of medial-lateral and anterior-posterior of ground reaction force and also a significant increase in the score of ankle joint function assessment tool (p <0.05).
Conclusion: Given the effectiveness of hopping exercises, postural control deficit, and time to stabilization in sport exercises, it is suggested that these selected exercises be used in training and rehabilitation protocols.

Keywords

Chronic ankle instability

Hopping exercises

Functional

Postural control

Athlete