Volume 10, Issue 3 (spring 2024)
IJRN 2024, 10(3): 20-30 |
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Milad Alipour Sari Nasirloo Mr. 
, Aydin Valizadeh Orang Dr. , AmirAli Jafarnezhadgero Dr. * , Marefat Siahkouhian Dr. , Maryam alsadt Emami Ms
, Aydin Valizadeh Orang Dr. , AmirAli Jafarnezhadgero Dr. * , Marefat Siahkouhian Dr. , Maryam alsadt Emami Ms
Associate Professor of Sports Biomechanics, Department of Sports Biomechanics and Management, Faculty of Educational Sciences and Psychology, Mohaghegh Ardabili University, Ardabil, Iran
Abstract: (2908 Views)
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.
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.
Type of Study: Research |
Received: 2022/12/12 | Accepted: 2023/08/29 | Published: 2024/05/19
Received: 2022/12/12 | Accepted: 2023/08/29 | Published: 2024/05/19
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