Investigation of the Relationship between Vertical Stiffness and Time to Stability Index during Landing
Introduction: Theoretically, stiffness is effective in the stability and can subsequently reduce the risk of injury. The aim of this study was to investigate the relationship between vertical stiffness and time to reach stability during landing.Materials and Methods: Twenty healthy active men partic...
| Main Authors: | , , |
|---|---|
| Format: | Article |
| Language: | fas |
| Published: |
Vesnu Publications
2020-04-01
|
| Series: | مجله پژوهش در علوم توانبخشی |
| Subjects: | |
| Online Access: | https://jrrs.mui.ac.ir/article_17165_0b50cf464a19adc7057700c5e7897aca.pdf |
| _version_ | 1797669645736476672 |
|---|---|
| author | Mohammadamin Mohammadian Heydar Sadeghi Mehdi khaleghi-Tazji |
| author_facet | Mohammadamin Mohammadian Heydar Sadeghi Mehdi khaleghi-Tazji |
| author_sort | Mohammadamin Mohammadian |
| collection | DOAJ |
| description | Introduction: Theoretically, stiffness is effective in the stability and can subsequently reduce the risk of injury. The aim of this study was to investigate the relationship between vertical stiffness and time to reach stability during landing.Materials and Methods: Twenty healthy active men participated voluntarily in this study. Vertical hopping tests were performed bilaterally, unilaterally on dominant leg, and unilaterally on non-dominant leg with self-selected, controlled (frequency: 2.2 Hz), and maximal strategies during which vertical stiffness variables were determined. Single-leg landing test from platform was performed to determine the variables of time to reach stability in vertical, anterior-posterior (AP), and medio-lateral (ML) directions on the force plate. The relationship between vertical stiffness and time to reach stability variables was determined by Pearson correlation test (P ≤ 0.05).Results: A significant positive relationship was observed between maximum unilateral vertical stiffness on dominant leg (r = 0.45, P = 0.048) and non-dominant leg (r = 0.52, P = 0.012) with time to reach stability in AP direction.Conclusion: These findings suggest that high level of vertical stiffness increases the AP time to reach stability and consequently increases the risk of associated injuries. |
| first_indexed | 2024-03-11T20:47:29Z |
| format | Article |
| id | doaj.art-80663c7961b84442a77d4316a87cbfaa |
| institution | Directory Open Access Journal |
| issn | 1735-7519 2008-2606 |
| language | fas |
| last_indexed | 2024-03-11T20:47:29Z |
| publishDate | 2020-04-01 |
| publisher | Vesnu Publications |
| record_format | Article |
| series | مجله پژوهش در علوم توانبخشی |
| spelling | doaj.art-80663c7961b84442a77d4316a87cbfaa2023-10-01T06:27:12ZfasVesnu Publicationsمجله پژوهش در علوم توانبخشی1735-75192008-26062020-04-0116119520010.22122/jrrs.v16i0.362517165Investigation of the Relationship between Vertical Stiffness and Time to Stability Index during LandingMohammadamin Mohammadian0Heydar Sadeghi1Mehdi khaleghi-Tazji2PhD Student in Sports Biomechanics, Department of Biomechanics and Sports Injuries, School of Physical Education and Sports Sciences, Kharazmi University, Tehran, IranProfessor, Department of Biomechanics and Sports Injuries, School of Physical Education and Sports Sciences, Kharazmi University, Tehran, IranAssistant Professor Department of Biomechanics and Sports Injuries, School of Physical Education and Sports Sciences, Kharazmi University, Tehran, IranIntroduction: Theoretically, stiffness is effective in the stability and can subsequently reduce the risk of injury. The aim of this study was to investigate the relationship between vertical stiffness and time to reach stability during landing.Materials and Methods: Twenty healthy active men participated voluntarily in this study. Vertical hopping tests were performed bilaterally, unilaterally on dominant leg, and unilaterally on non-dominant leg with self-selected, controlled (frequency: 2.2 Hz), and maximal strategies during which vertical stiffness variables were determined. Single-leg landing test from platform was performed to determine the variables of time to reach stability in vertical, anterior-posterior (AP), and medio-lateral (ML) directions on the force plate. The relationship between vertical stiffness and time to reach stability variables was determined by Pearson correlation test (P ≤ 0.05).Results: A significant positive relationship was observed between maximum unilateral vertical stiffness on dominant leg (r = 0.45, P = 0.048) and non-dominant leg (r = 0.52, P = 0.012) with time to reach stability in AP direction.Conclusion: These findings suggest that high level of vertical stiffness increases the AP time to reach stability and consequently increases the risk of associated injuries.https://jrrs.mui.ac.ir/article_17165_0b50cf464a19adc7057700c5e7897aca.pdfvertical stiffness,hopping,time to stability,landing |
| spellingShingle | Mohammadamin Mohammadian Heydar Sadeghi Mehdi khaleghi-Tazji Investigation of the Relationship between Vertical Stiffness and Time to Stability Index during Landing مجله پژوهش در علوم توانبخشی vertical stiffness, hopping, time to stability, landing |
| title | Investigation of the Relationship between Vertical Stiffness and Time to Stability Index during Landing |
| title_full | Investigation of the Relationship between Vertical Stiffness and Time to Stability Index during Landing |
| title_fullStr | Investigation of the Relationship between Vertical Stiffness and Time to Stability Index during Landing |
| title_full_unstemmed | Investigation of the Relationship between Vertical Stiffness and Time to Stability Index during Landing |
| title_short | Investigation of the Relationship between Vertical Stiffness and Time to Stability Index during Landing |
| title_sort | investigation of the relationship between vertical stiffness and time to stability index during landing |
| topic | vertical stiffness, hopping, time to stability, landing |
| url | https://jrrs.mui.ac.ir/article_17165_0b50cf464a19adc7057700c5e7897aca.pdf |
| work_keys_str_mv | AT mohammadaminmohammadian investigationoftherelationshipbetweenverticalstiffnessandtimetostabilityindexduringlanding AT heydarsadeghi investigationoftherelationshipbetweenverticalstiffnessandtimetostabilityindexduringlanding AT mehdikhaleghitazji investigationoftherelationshipbetweenverticalstiffnessandtimetostabilityindexduringlanding |