JOURNAL OF ADVANCED SPORT TECHNOLOGY
Year:2017 | Volume:1 | Issue:1 |Papers Count:8

It has been my great pleasure to announce the launch of a new journal, “Journal of Advanced Sport Technology (JAST)” in the January 2017. We try our best to make sure we deliver high-quality content to our readers in a timely fashion. Definitely, a high standard scientific journal cannot be great without a team of dedicated editors and reviewers. We will strive to be a pioneer in sport technology and our most ambitious attempts is to focus on the realms of innovation and technology development in sport science.JAST is dedicated to the rapid dissemination of high quality original and technological research papers. Fortunately, working with our knowledgeable and international Editorial Board members, assured a rapid, robust and fair peer-review process.Finally, I wish to encourage more contributions from the scientific communities, industry, and sport sectors to ensure a continued success of the journal. I hope you will find JAST very informative and innovative.

Wearable technology offers the opportunity for information and life to seamlessly integrate through themeasurement of the bodies’ physiology and biomechanics. Although the technologies are still in theirinfancy they are today fashionable, topical and experiencing tremendous growth. To date they have foundwidespread utility in sporting endeavours and more recently have been applied by consumers and researchersalike to health contexts as one of the most popular smart devices. Michael Porter, well known businessstrategist recently took a look at ‘Smart Devices’ [1] describing it as the third wave of IT that will likelytransform many industries...

There is no doubt that sporting surfaces are extremely important for every activity. However, there is notsufficient scientific report regarding the effect of the area elastic surface floor with common range stiffness onvertical hopping safety and performance. The aim of this study was to examine the effect of custom area elasticsurface with different stiffness on the hopping performance and safety with emphasis on familiarity to thesurfaces. Fifteen young and healthy experienced male were volunteered in this study. Kinematic and kinetic datarecorded during hopping on four surfaces (300-500 kN/m) using the Motion Analysis System and AMTI forceplate. In the data analysis process, leg and joint stiffness, maximum vertical ground reaction force, mechanicalenergy and power and angular position of joints calculated. The results of this study show that surface stiffnessdoes not effect on the leg and joint stiffness, but after familiarity to the surface, there was a significant increasein 400 kN/m surface positive mechanical energy and power of ankle joint and a significant decrease in negativemechanical energy and power of knee joint (P<0.05). In conclusion, it seems the change in surface stiffnessafter familiarity to the surface causes an improvement of hopping performance without any change in leg andjoint spring stiffness. It can be proposed that deformation following impact also does not enough to significantlyreduce the vertical ground reaction force.

In our technological world, there are plenty of opportunities to utilize science and engineering to improve exerciseperformances. Muscular strength is one of the main components of the physical fitness. In this regard, the IsometricDynamometer is a scientific instrument intended to quantify the muscle strength. Hence, the aim of this project was tomanufacture an innovative computerized isometric dynamometer package and relevant software.In the current project a high precision isometric force transducers (2000 and 5000 N), instrumental amplifier, high precisionAnalog-to-Digital Converter connected to a high speed microcontroller were implemented. A graphic LCD, MicroSDmemory card used in the data logger to display and record the force data. Professional software was designed tocommunicate with the data logger by a USB port and display four-channel line charts in online mode. Offline data processingand record the processed data on a database is also available. This device provided an innovative method of simultaneousright & left side dynamometry using two sensors to measure any imbalance in the strength between two limbs.Additionally, this package has a grip dynamometer, a pull and press hands dynamometer, and optional connectionto other force sensors. The linearity of the sensors’ output for 0, 10, 50, 100, 200 kg weights was 99.99 and testretestmeasurements confirmed very high reliability (0.99±0.012). This package was extensively applied in thelaboratory researches due to its unique simultaneous force measurement feature. Hence, this package withdistinctive specifications can extensively implement in clinic, gym, laboratory, field tests.

In different sport activities, taping is widely used as a treatment in the prevention and treatment of lower orupper extremity disorders. The aim of this study was to determine the immediate effect of Kinesio Taping (KT)on the ground reaction force (GRF) components during bilateral drop landing task in athletes with concurrentpronated foot and patella-femoral pain syndrome (PFPS). Twelve male athletes (mean age = 20.1 ± 1.4 years;mean height = 169.4 ± 4.8 cm; mean weight = 66.9 ±10.4 kg) with concurrent PFPS and pronated foot werevolunteered to participate in this study. Subjects were instructed to perform three bilateral drop landingattempts, before and after Kinesio Taping. To perform the bilateral drop landing tests, the subjects wereinstructed to execute a double-leg landing task by stepping off a platform (height=30 cm) and landing barefootwith both feet on a Kistler force platform at a frequency of 1000 Hz. Meanwhile, they were asked to employtheir natural landing style. Paired sample t test was chosen to measure differences between both with andwithout taping conditions. The statistical significant level was set at P <0.05.Results: Peak vertical GRF amplitude (Fzmax) was similar between both conditions (P>0.05). However, tapingcondition displayed a lower peak posterior GRF amplitude (by 44%) than that without taping condition(P=0.002). Furthermore, peak medio-lateral GRF amplitudes (Fymax and Fymin) did not show any significantdiferences between both conditions (P>0.05). KT could decrease the possibility of injury by improving bothamplitude and time to peak of GRF during bilateral drop landing task in athletes with concurrent pronated foottype and PFPS.

In this study, an investigation was done in order to increase stability of ankle and reduce injuries resulting twistwhile using aid orthosis and effort in providing superior samples. Therefore this study aims to investigate theeffect of ankle hinged Stirrup brace on the Sagittal position of ankle joint in healthy individuals.Eighteen healthy subjects participated in this quasi-experimental study (8 males, 10 females) aged 19 to 30years. Individuals were selected by non-random sampling and accessible sampling type based on inclusioncriteria. Dorsiflexion angle at the moment of heel contact with the ground while walking in the 3 different stepsof test with just shoes, shoes with articulated Stirrup brace, shoes with modified articulated Stirrup brace(stretch strep) was recorded by using (VICON Motion Systems) motion analysis system. For comparison of thesupposed positions also paired t test was used. Articulated ankle brace have no significant effect on the anklejoint sagittal plane position. In addition, the modified brace cause a significant change in the position of theankle joint sagittal plane and increase the angle of the ankle joint in the desire direction. Adding a stretch strapto the main plantar brace according to the picture presented in the research methodology as an involuntary factorcreates movement restrictions in the sagittal plane to increase dorsiflexion angle that the change would lead toincreased dorsiflexion ankle angle in order to increase consistency at the moment of heel contact with theground in healthy individuals.

In this study, the kinematic effect of two molding methods in the manufacture of foot orthoses on ankle jointwas examined. The aim of this study was to determine a more beneficial method about ankle kinematics in themanufacture of insoles for people with flexible flat foot. Ten males aged 19 to 27 years, with normal BMI andnormal gait pattern participated in this study, all of them had flexible flatfoot. Each person wearing specialshoes on three situations: stepped without the insole, with the Slipper cast insole and Circumferential wrapmethod insole and in each situation completed a walk cycle. The kinematic data were collected and measuredfor each subject under three assumed positions by VICON motion analysis system. For comparison and analysisof three assumed situation, repeated measures test (ANOVA) was used. The results of this study show that theuse of two molding method, had no immediate effect on reducing the average maximum eversion angle of theankle. Eversion speed limit in the ankle was not affected by insole molding and no significant difference wasobserved. Compared to the situation without insoles, insole with the Slipper cast and Circumferential wrapmolding method led to little difference in amplitude eversion. This study evaluated immediate effect of insoles.Two custom foot orthotics intervention did not lead to significant decreases in maximum eversion angle ofankle in the frontal plane.

Ankle injury research is typically performed with cadavers or by the clinical measuring technique which both of them haveseveral problems such as general degradation of tissues. Numerical methods help us to overcome these problems.Therefore, the goal of this study was to compute the stress in Anterior Talofibular (ATF) ligament under different strategiesof landing using finite element modeling for males and females. These strategies included the variation of the ankle flexionangle and hindfoot angle at the instant of initial contact with the ground. For calculating stress in ATF ligament, ankletorques were inputted to finite element model. Ankle torques were obtained from a five-link dynamic model using inversedynamic approach. Input data for dynamic model included motion kinematics during drop landing from 60 cm heightduring 0.198 seconds after initial contact of the foot with the ground. Finite element model was created by manipulating ofCT and MR images using the appropriate software. Results showed that stress in ATF ligament increase when torques inthe ankle joint increase. Results from finite element model showed that when initial ankle with the ground was 68.7 degreespeak ATF ligament stress for females was lower than when initial ankle with the ground was 88.7 degrees. Additionally,increased initial plantar flexion of ankle leads to increasing stress up to 5.27 times in ATF ligament. Comparing this modeland previous investigations’ results showed that this method is a useful tool to simulate landing condition for any personand to help us to predict whether those conditions probably lead to injuries or not.