Showing 3 results for Velocity
Fatima Riyahi, Heydar Sadeghi, Elham Shirzad,
Volume 0, Issue 0 (11-2019)
Abstract
The fencing lunge is one of the most common and fundamental attacking moves in fencing. The aim of this study was to provide kinematical compare of upper extremity among elite female and male senior fencers when performing a lunge. Four female and four male members of Iran National Team were selected as research sample. The subjects were filmed when performing a complete lunge with a camera of 300 Hz sampling rate to record their reactions to a light stimulus. To analyze the collected data, mean, standard deviation and student's-t test at significance level of p≤0.05 were used. The results revealed that elite male fencers had significantly shorter reaction and movement time comparing with elite female fencers. No major differences in other kinematic parameters indicate that elite male and female fencers performed lunge in similar way. The final conclusion of this study is that the existing differences in time of lunge technique may suggest the need for alternative training strategies to prepare fencing athletes.
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Volume 10, Issue 4 (10-2012)
Abstract
Abstract
Identification of one karateka pave the way to reach the top honor. One of the
parameters affecting at success of kumite players is The performance velocity
of techniques. The purpose of this study was to investigate the relationship
between anthropometric characteristics with the performance velocity of Gyakuzuki
technique in Elite female Karatekas. Thirty-one senior female kumite
competitors of the Sepahan Mobarakeh Foolad karate team participated in this
study. Somatotype and The anthropometric profile were measured. Also, The
performance velocity of techniques was evaluated using quintic software. The
findings showed that The mean somatotype of Karatekas was 3.9 - 4.8 – 3.1
(values for endomorph, mesomorph and ectomorph, respectively). The
Mesomorphic component strongly correlated with velocity of techniques Gyakuzuki.
While, The values height, sitting height and humorous bone length
negative correlated with velocity of technique Gyaku-zuki. The results indicated
that the somatotype and anthropometric characteristics influence on the
performance velocity of Gyaku-zuki technique
Vahideh Ranjbari, Mehdi Rafei Borujeni, Shahram Lenjannejadian,
Volume 20, Issue 23 (9-2022)
Abstract
Introduction and aim: The kinematic analysis of elite athletes’ performance is an important method to determine effective parameters of sport performances. The purpose of the present study was to compare kinematic characteristics of the upper extremity in adolescence and adult players in three-step shoot in Handball. Methods: Nine elite adult handball players working in the Super League (23.55 ± 2.69 years) and ten teen handball players (16.4 ± 0.69 years) participated in this study. The pictures related to the final stage of the shoot were recorded three dimensionally and analyzed by a graphic interface in MATLAB software. The data related to the angular position, angular velocity and peak angular velocity and position corresponding to the upper limb joints of athletes, including the wrist, elbow and shoulder were obtained. Statistical data were used for analysis through student t-test for two independent groups with significance level p ≥ 0.05 in order to compare two groups. Findings: There were significant differences between two groups in angular position of elbow joint during extension at maximum angular velocity and linear velocity of the ball at the time of the release. Conclusion: it seems that other factors than cinematic characteristics such as anthropometric characteristics along with muscle strength in adult are important to get the maximum velocity of ball release.
