Abstract
The aim of this investigation is to compare velocity and power variables during loaded-squat jump (SJLoaded) exercise of national athletes dealing with different sports branches and to identify whether velocity and power parameters become different or not according to branches. In accordance with this purpose, a total of 36 national athletes (age: 20.3±1.68 years; height: 173.5±6.46 cm; weight: 72.3±10.29 kg) composed of 12 wrestlers (age: 19.5±.90 years; height: 172.3±6.19 cm; weight: 75.5±13.9 kg), 12 arm wrestlers (age: 20.5±2.02 years; height: 174.7±4.76 cm; weight: 72.6±8.31 kg) and 12 kickboxers (age: 20.7±1.81 years; height: 173.5±8.29 cm; weight: 68.9±6.94 kg) dealing with different sports branches have voluntarily participated in this study. For identifying velocity and power parameters, SJLoaded exercise was executed with an external load that corresponds to 40% of body weights of the athletes by utilizing an isoinertial velocity transducer (T-Force dynamic measurement system) and values of mean velocity (MV), mean propulsive velocity (MPV), peak velocity (PV), mean power (MP), mean propulsive power (MPP) and peak power (PP) were determined. All data analyzes were performed in the SPSS 16.0 statistical program. Firstly, in order to analyze data, it was determined that the data indicated normal distribution by looking at the Shapiro-Wilk coefficient regarding the normality of the distribution of the data. Therefore one-way analysis of variance (One-way ANOVA) was utilized to identify statistical significant differences among athletes competing in different branches with regard to the velocity and power variables during the SJLoaded exercise. According to analyze results, no statistical significant difference wasn’t seen among branches with regard to MV [f (2.33) = 1.306], MPV [f (2. 33)=2.195], PV [f (2. 33)=2.242], MP [f (2. 33)=1.225], MPP [f (2. 33)=2.787] and PP [f (2. 33)= 2.607] parameters during SJLoaded exercise (p>0.05). The velocity and power parameters obtained in the SJLoaded exercise don’t differ according to the branches.
Highlights
It is believed that kinetics and kinematics related to resistance trainings are an important stimulant in consist of neuromuscular adaptations (Crewther et al, 2006)
The physical characteristics of the athletes were presented in table 1 and the results of descriptive statistical pertaining to velocity and power parameters in SJLoaded exercise were presented in table 2
In this study comparing power (MP, mean propulsive power (MPP), peak power (PP)) and velocity (MV, mean propulsive velocity (MPV), peak velocity (PV)) parameters during SJLoaded movement of national athletes who are engaged in different sports branches and analyzing whether these parameters become different as per the branches, it has been observed that there isn’t significant discrepancy statistically among the branches in respect to both velocity and power parameters
Summary
It is believed that kinetics and kinematics related to resistance trainings are an important stimulant in consist of neuromuscular adaptations (Crewther et al, 2006). The power and strength characteristics (Harman, 2008) used to describe some crucial abilities that participate to peak human effort in sports activities or other physical exercises are crucial at sport events requiring an ability of creating a considerably high force against high work rate (power) and great resistances (strength). For this reason, the achievement in several sports branches depends on the player's maximal strength and explosive leg power to a large extent (Yessin & Hatfield, 2007). Determining velocity and power parameters is able to be beneficial while ascertaining specific characteristics of training in sport branches requiring explosiveness in different movements. The aim of this investigation is to compare velocity and power parameters in SJLoaded movement of national athletes dealing with different branches and to identify whether velocity and power parameters become different or not according to the branches
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