Volume 2, Number 3 (12-2016)                   J Sport Biomech 2016, 2(3): 0-0 | Back to browse issues page

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Khodaveisi H, Hosseinzadeh A. The effect of ankle, knee and hip Isokinetic fatigue on shock absorption and rate of loading during pair-leg landing. J Sport Biomech. 2016; 2 (3)
URL: http://biomechanics.iauh.ac.ir/article-1-97-en.html

Department of Physical Education and Sport Sciences, Islamic Azad University, Karaj, Albaorz, Iran
Abstract:   (257 Views)

Introduction:  this study aims to determine the effects of ankle, knee, and hip ISO kinetic fatigue on shock absorption and rate of loading during paired-leg landing.

Methods: Fifteen female students with an average age of 19.67± 0.62 years,
weight of 54.60 ± 9.44 kg, and height of 163.30 ± 5.54 cm were selected randomly as subjects in this study. First, the participants were tested by jumping from a box with the height of 30cm, to land on a force plate and information relevant to this test was recorded. Then, the Isokinetic fatigue protocol of the ankles, knees, and hips muscles’ was implemented for everyone by an Isokinetic System, and related information was recorded. The second test of paired- leg landing with fatigue muscles, was carried out on a force plate immediately. For statistical analysis, SPSS18 software, Dependent T-test, and Analysis of Variance with Repeated Measurement at the significance level of P < 0.05, were used.         

Results: Dependent T- test results showed no significant difference in comparing the rate of load throughout landing before and after fatigue in the joints of the lower extremities. Also, the analysis of variance with repeated measurements, showed no significant difference between the rate of load before and after ankle, knee and hip fatigue.

Conclusion: Findings of this study indicate that the fatigue protocol using Isokinetic devices with uniform speed, increases muscle strength due to generating stress at all the joints, thereby, compensating the active and passive joints for shock absorption, and load distribution on the lower extremities.

Full-Text [PDF 1079 kb]   (78 Downloads)    
Type of Study: Research | Subject: Special
Received: 2016/05/31 | Accepted: 2017/08/17 | Published: 2017/09/14

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