Showing 2 results for Valizadeh orang
Amirali Jafarnezhadgero, Ali Yadegar, Aydin Valizadeh Orang, Amin Hoseinpour,
Volume 7, Issue 2 (Winter 2021)
Abstract
Introduction: Running poses an essential role in maintaining cardiovascular health. However, it has been demonstrated that 2.5 to 38 injuries per 1,000 hours of running can occur. The purpose of this study was to investigate ground reaction forces components during running with running shoes compared to control shoes in individuals with genu varum.
Methods: This study was laboratory and semi-experimental. The statistical society includes all male students at the University of Mohaghegh Ardabili. The subjects of the study consist of 15 healthy males and 14 males with genu varum. Ground reaction force components were recorded using Bertec force plate during running in four conditions: barefoot, running shoes (Alborz shoes and agility shoes), and control shoes. Two ways ANOVA with repeated measure was used for statistical analyses.
Results: Peak lateral ground reaction force at heel contact with Alborz shoes were higher than that of control shoes (P = 0.001). Peak anterior ground reaction force component at the push-off phase with agility shoes were lower than those in control shoes (P < 0.003) and barefoot (P < 0.019) condition.
Conclusions: Since Alborz shoes were able to reduce the peak lateral ground reaction force, using these shoes was recommended to reduce injuries. However, further study in this field is warranted.
Mr. Milad Alipour Sari Nasirloo, Dr. Aydin Valizadeh Orang, Dr. Amirali Jafarnezhadgero, Dr. Marefat Siahkouhian, Ms Maryam Alsadt Emami,
Volume 10, Issue 3 (spring 2024)
Abstract
Introduction: The prevalence of diabetes is increasing worldwide. This disease affects body mechanics during walking. The purpose of this study was to investigate the effect of 8 weeks of walking exercises on the frequency spectrum of ground reaction forces during walking in diabetic patients without neuropathy.
Methods: This study was semi-experimental. The sample included 24 diabetic individuals (mean diabetic age: 3.1±0.9 years, mean glucose level: 151.4±10.4 mg/dL) who were selected through convenience sampling. The subjects were randomly divided into two experimental groups (12 individuals) and a control group (12 individuals). Before and after the 8-week walking training protocol, the subjects walked at a desired speed on the force plate. The ground reaction force data in three directions (vertical, posterior-anterior, and internal-external) were converted from time function to frequency function using Fourier transform (harmonic analysis) and MATLAB software version 2016.
Results: Within the group, the results showed a significant increase in the frequency with a power of 99.5% in the vertical component (P=0.016), internal-external component (P=0.002), and anterior-posterior component (P=0.026) of the ground reaction forces. The post-test values of the ground reaction force were significantly reduced compared to the pre-test values. The number of necessary harmonics in the internal-external component of the ground reaction force in the post-test significantly increased compared to the pre-test (P=0.017). Additionally, the number of essential harmonics (P=0.039) and the median frequency (P=0.026) in the anterior-posterior component of the ground reaction force had a significant decrease in the post-test compared to the pre-test.
Conclusions: The results of this study demonstrated that walking exercises have a positive effect on the frequency content of the ground reaction force in diabetic patients without neuropathy and improves the frequency with a power of 99.5% and the number of essential harmonics in different components. It can have beneficial effects on reducing the forces on the lower limbs during walking.
