Showing 3 results for Boroushak
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Volume 0, Issue 0 (11-2019)
Abstract
One of the most common abnormalities in the lower extremity, is the flexible flat foot. Pes planus is a condition where medial longitudinal is flatter than normal and the entire sole of the foot comes into near complete or complete contact with ground and causes distortions in the structures of the skeletal parts of the foot. The purpose of this study was the effect of six weeks of local and comprehensive corrective exercises on proprioception, balance and ankle navicular drop in 10-18 years old female with flexible flat foot deformity. This research was quasi-experimental study performed in two phases: pre-test and post-test. Fifty one female with flexible flat foot postures entered the study as subject. They were randomly divided into 2 experimental groups (local and comprehensive) and 1 group control. As one of the inclusion criteria, a navicular drop test was performed for subject to assess the condition of the foot posture. The experimental group performed corrective exercise for 6 weeks (3 sessions per week for 30 minutes) while control group performed the routine exercise. Ankle proprioception, balance and navicular drop was evaluated before and after the interventions. Statistical analysis was performed in SPSS software version 26. A covariance analysis test was use to evaluate the between-group difference, and paired sample test was used to evaluate the within-group changes. This study's finding showed that the corrective exercise group in the post-test had a better performance than pre-test in proprioception, navicular drop and balance (P=0.000) but in the control group, no significant difference was observed between the two stages of the test (P>0.05). it was also observed in the comparison between groups that in the post-test in the variables of the proprioception, navicular drop and balance of the experimental group achieved better results than the control group (P>0.05). This study show that six weeks of local and comprehensive corrective exercises has significantly improved proprioception, navicular drop and balance in 10-18 years old female with flexible flat foot. According to the results obtained in this study, it seems that corrective exercises can be used in this group to improve proprioception, static balance and posture
N Boroushak, H Khoshnoodi, H Daneshmandy, M Eslami,
Volume 17, Issue 17 (4-2019)
Abstract
Nowadays there is no specific and effective standard for evaluating the helmets in martial arts which it has caused a lot of brain damages. The purpose of this study was designing and modeling a helmet assessment machine in martial arts, based on dynamic’s parameters and criteria. SolidWorks, Adams and Catia softwares were used for designing this machine. Also, In order to build this machine, an artificial head that equipped with force and acceleration sensors and a mechanical arm for applying impact to the head were used. The validation of the machine was done by comparing its results (impact force, linear acceleration and rotational acceleration) with the results obtained from the simulated model in the computer. The Pearson correlation coefficient of 0.9 that obtained from this comparison indicates that the results of this machine are correct. To confirm the reliability of the machine, an Intraclass Correlations was used, the results showed values of 0.7 and greater than that and it also confirmed the appropriate repeatability of the machine. According to the results of this study, due to the considering the important parameters of linear and rotational acceleration and the impact force in evaluating helmets and investigating the mechanism of head injury in the conditions close to competition ones, the device can be an appropriate equipment for more accurate measurement of helmets in martial arts.
Mohammadreza Rahimi, Neda Boroushak,
Volume 22, Issue 28 (12-2024)
Abstract
This study focuses on the design, construction, and validation of a digital-adjustable, weight-free home fitness device for muscle training. The research adopted a mixed-methods approach, providing a comprehensive evaluation of the device's performance. Initially, existing equipment and resistance training methods were analyzed, gathering essential information for the preliminary design. Three-dimensional models and prototypes were developed using software such as Rhino Cross 6 and AutoCAD 2018. For validation, the device’s resistance was tested with a digital dynamometer in eight different settings, yielding a high validity with a correlation coefficient of 0.9. The reliability of the device was also assessed across three exercises (seated leg extension, seated chest press, and seated biceps curl) with 10 kg weights, repeated five times, resulting in a reliability coefficient of 0.8. These results indicate the device's high accuracy and consistent resistance. With precise digital adjustments and the capability for varied strength exercises, this device enables users to conduct effective, high-quality workouts at home, contributing to muscle strengthening and improved fitness.
