Mrs Faeze Nemati, Dr Mostafa Zareei, Mr Morteza Barzegar Bafrouei,
Volume 0, Issue 0 (11-2019)
Abstract
Introduction: Studies have shown that anterior cruciate ligament injury causes long-term periods of disability and long-term effects; Therefore, it is necessary to adopt preventive measures as well as to have studies that determine the effect of injury prevention programs in improving the performance level of players. Therefore, the purpose of this study was to investigate the effect of eight weeks of the anterior cruciate ligament injury prevention program on the function of elite female kabaddi athletes.
Materials and Methods: This research is semi-experimental based on the application of the intervention variable. 27 female kabaddi athletes with an age range of 18-24 years were randomly divided into two intervention and control groups. The intervention group performed prevention injury and enhance performance program exercises for 8 weeks. The tests were taken before and after eight weeks of the PEP program. These evaluations included T-test, 20-meter sprint test, Y-balance test, sitting and reaching flexibility test, hopping test and functional movement screening test. leven's statistical test was used to check the homogeneity of variances and ANCOVA test was used to evaluate and compare the data.
Findings: The results of the covariance analysis test showed that the intervention group had significantly better scores compared to the control group in the Y-balance tests of the right (p=0.002) and left leg (p=0.001), single leg hopping with right leg (p=0.004) and left leg (p=0.000), crossover hopping with right leg (p=0.023) and sit and reach flexibility test (p=0.003) after eight weeks of exercises In addition, in the tests of sprinting (p=0.649), agility (p=0.073), triple hopping with left leg (p=0.784) and right leg (p=0.204), crossover hopping with left leg (p=0.540) and functional movement screening test (p=0.943) did not show any significant difference between the two groups.
Results: The results of this research showed that the eight-week prevention injury and enhance performance program has a significant effect on the dynamic balance of the right and left legs, hopping (single leg hopping and crossover hopping of the right leg), and the flexibility of the hamstrings and lower back of elite female kabaddi athletes; But hopping (triple hopping and left leg crossover hopping), speed, agility and FMS test scores have no significant effect.
Dr Elham Shirzad, Dr Ali Asghar Ravasi, Mojtaba Eshrestaghi,
Volume 13, Issue 9 (4-2015)
Abstract
Stiffness is an index for determination of elastic properties of body and its optimum range is different in various
motion patterns. The Spring-mass model is used for calculating stiffness. In this method, the whole leg is modeled
with a linear simple spring. The aim of this study is determination of lower body stiffness and evaluation of its
correlation with agility, as dominant motion pattern in racket sports. 12 national-level male racket-players (age:
25±4 years & weight: 80±7 kg) participated voluntarily in this study. Leg and vertical stiffness were measured
during running on treadmill and hopping test. Pearson’s correlation coefficients were used to examine the
relationships between stiffness and agility test records. Statistical significance was set at P< 0.05. There wasn’t
significant correlation with agility in this study. The reason could be of the contrast influence of knee and ankle
stiffness on performance. This problem requires separate evaluation of joint stiffness.
