scholarly journals THE RELATIONSHIP BETWEEN MORPHOLOGICAL CHARACTERISTICS AND THE MANIFESTATION OF EXPLOSIVE POWER OF LOWER LIMBS IN BASKETBALL PLAYERS

2021 ◽  
Author(s):  
Vladan Pelemiš ◽  
Ivan Prskalo ◽  
Damir Mandić ◽  
Zoran Momčilović ◽  
Vladimir Momčilović
Keyword(s):  
Negative Correlation ◽  
Vertical Jump ◽  
Morphological Characteristics ◽  
Significant Negative Correlation ◽  
Lower Limbs ◽  
Predictor Variables ◽  
Countermovement Jump ◽  
Basketball Players ◽  
Squat Jump ◽  
Explosive Power

Vertical jump is seen as the main motor skill in basketball, on which the final result largely depends. The research was conducted with the aim of identifying the connection between morphological characteristics and the manifestation of tests for assessing the explosive power of lower limbs of adolescent basketball players (14.99±0.82 years of age). The assessment of the explosive power of lower limbs was done using the tensiometer Quattro Jump - Kistler Portable performance analysis system 2019, Type 9290DD Switzerland, and standardized tests countermovement jump and squat jump were applied. The system of predictor variables included the factor of longitudinal skeletal dimensions, transverse skeletal dimensions, body volume and weight factor, and subcutaneous adipose tissue factor. All anthropometric measures were strictly taken in accordance with IBP standards. The results of the regression analysis indicated that the system of predictor variables had a statistically significant effect on the manifestation of explosive power of lower limbs in the variable countermovement jump (P=0.05) and squat jump (P=0.01). High values of the coefficients of determination in both cases explain from 92% to 97% of the total variation. The predictor variable Wrist diameter (Beta = -0.78) had the highest significant negative correlation in the countermovement jump test, while the following predictor variables also had the highest significant negative correlation with the squat jump criterion: Chest circumference (Beta=-1.07), Body weight (Beta=-060) and Thigh circumference (Beta=-0.39). Furthermore, negative correlations of variables for the assessment of transverse skeletal dimensions in young basketball players and negative linear correlation of variables for the assessment of subcutaneous adipose tissue in both criteria were observed. The authors recommend dividing athletes by positions they play in, in order to obtain more accurate information about the negative correlation between morphological characteristics and vertical jump tests.

scholarly journals Explosive Strength of Lower Limbs in 10 – 12 Years Old Athletes of Individual Sports

2020 ◽  
Vol 60 (1) ◽  
pp. 94-104
Author(s):  
Daniela Leütterová ◽  
Petra Tomková ◽  
Dalibor Dzugas ◽  
Peter Kačúr ◽  
Pablo Prieto Gonzalez
Keyword(s):  
Vertical Jump ◽  
Lower Limbs ◽  
Statistical Characteristics ◽  
Strength Development ◽  
Countermovement Jump ◽  
Squat Jump ◽  
Explosive Strength ◽  
Jump Test ◽  
Student’S T ◽  
Individual Sports

SummaryThe aim of the study was to determine the levels of lower limb explosive strength of girls in different sport specialization. The sample consisted of 24 girls in aerobic gymnastics (n = 12) and athletic (n = 12) aged 10 to 12 years. To assess the levels of girls’ lower limbs explosive strength, we administered the following tests: countermovement jump test, countermovement jump with free arms test, squat jump test, 10-seconds repetitive jumping test. Testing sessions took place in September 2019. To obtain data about the levels of lower limbs explosive strength, we recorded step height (cm) and duration of the flight phase (s). Data about the lower limbs explosive strength were collected using the Optogait system for optical detection. We applied basic statistical characteristics, namely Student’s t-test and multivariate linear regression. There were no significant differences between girls in aerobic gymnastics and athletics. We recorded better test results in the group of girl’s athletes in the countermovement jump, countermovement jump with free arms and squat jump. In the group of girl’s involved in aerobic gymnastics, we recorded better results in the 10-second repetitive vertical jumping and vertical jump strength. According to the collected data, we may conclude that the training process of the selected girls in terms of explosive strength development is significantly different. Girls involved in aerobic gymnastics showed a higher level of performance in the 10-second vertical jump, which results from the structure of sport specificity.

Lower Limb Kinetics and Kinematics during Two Different Jumping Methods

2015 ◽  
Vol 22 ◽  
pp. 29-35 ◽  
Author(s):  
Yang Shu ◽  
Dong Sun ◽  
Qiu Li Hu ◽  
Yan Zhang ◽  
Jian She Li ◽  
...  
Keyword(s):  
Lower Limb ◽  
Impact Force ◽  
Vertical Jump ◽  
Lower Limbs ◽  
Countermovement Jump ◽  
Kinematic Parameters ◽  
Squat Jump ◽  
High Level ◽  
Vertical Jumps ◽  
Kinematics Parameters

The purpose of the study is to investigate into the dynamic and kinematic parameters of lower limbs about two types of jump high-level basketball athlete doing: countermovement jump and squat jump. There were distinctively different in jump height between two types. Kinetics and kinematics parameters of squat jump were less than countermovement jump. Using Vertical Jumps countermovement jump can increase the height of vertical jump effectively. These jumps all can cushion the pressure of impact force in landing phase.

scholarly journals The bilateral strength and power asymmetries in untrained boys

Open Medicine ◽  
2015 ◽  
Vol 10 (1) ◽  
Author(s):  
Tomas Maly ◽  
Frantisek Zahalka ◽  
Lucia Mala ◽  
Pavol Cech
Keyword(s):  
Vertical Jump ◽  
Lower Limbs ◽  
Knee Extensors ◽  
Isokinetic Dynamometer ◽  
Countermovement Jump ◽  
Isokinetic Dynamometry ◽  
Squat Jump ◽  
Bilateral Deficit ◽  
The Difference ◽  
Knee Flexors

AbstractThe aim of the study was to identify the level of isokinetic strength and power of lower limbs in 13-year- old untrained boys (n=22, height: 158.5±8.0 cm, mass: 49.1±12.6 kg), to determine bilateral deficit between the limbs in the tests and examine their mutual relationship. Maximum peak muscle torque of knee extensors (PTQ) and flexors (PTH) on dominant (DL) and non-dominant leg (NL) were measured by isokinetic dynamometer. Three types of a vertical jump: countermovement jump with (CMJFA) and without arms (CMJ) and squat jump (SJ) were performed on two force platforms. We found the significant effect (p<.01) of independent vari- ables (knee extensors, flexors, AV) and their interaction on PT. AV did not indicate any significant effect on bilat- eral ratio of knee extensors (F4,84=.74, p>.05, ηp2=0.03), however a significant effect of AV was found in knee flexors (F4,84=2.70,p<.05, ηp2=.114). The type of jump had no effect on the difference between force exerted by DL and NL (F1,21=.102, p>.05, ηp2=.01). Bilateral deficit (Q:Q, H:H) did not significantly correlate with bilateral deficit in jumps (p>.05). Despite the possibility of identifying muscle asymmetries in the sense of strength imbalances, their mutual relation- ship with results in isokinetic dynamometry and power jump tests is still unclear.

scholarly journals Muscular Strength Spurts in Adolescent Male Basketball Players: The INEX Study

2021 ◽  
Vol 18 (2) ◽  
pp. 776
Author(s):  
Eduardo Guimarães ◽  
José A. R. Maia ◽  
Mark Williams ◽  
Filipa Sousa ◽  
Eduardo Santos ◽  
...  
Keyword(s):  
Muscular Strength ◽  
Handgrip Strength ◽  
Height Velocity ◽  
Adolescent Male ◽  
Strength Development ◽  
Maximal Velocity ◽  
Countermovement Jump ◽  
Basketball Players ◽  
Squat Jump ◽  
Medicine Ball

Although successful performance in basketball requires high levels of muscular strength during adolescence, its development is confounded by the effects of normal growth. We examine the timing, intensity and sequence of muscular strength according to biological age (years from peak height velocity (PHV)) and hypothesize that young basketball players attain their peak muscular strength spurts around PHV. A total of 160 adolescent male basketballers, aged 11–15 years, were followed bi-annually over 3 consecutive years. The years from attainment of PHV and peak weight velocity (PWV) were estimated and five muscular strength measures (sit-ups, handgrip, seated medicine ball throw, squat jump and countermovement jump) were aligned to years from PHV in 3-month intervals. Strength velocities were estimated using a non-smooth mathematical model. The mean ages at-PHV and at-PWV were 13.90 ± 1.40 years and 13.90 ± 1.79 years, respectively. Maximal velocity in sit-ups was attained 6 months prior to attainment of PHV (intensity = 10.69 repetitions·year−1), whereas maximal velocity in squat jump occurred 6 months after-PHV (intensity = 3.93 cm·year−1). Handgrip strength, seated medicine ball throw and countermovement jump maximal velocity peaked at-PHV (intensity = 8.47 kgf·year−1, intensity = 0.75 m·year−1, intensity = 5.59 cm·year−1, respectively). In general, maximal velocity spurts did not differ in their timing, with the velocities reaching a peak concurrent with PHV and PWV or within 6 months of its attainment. Basketball coaches, as well as strength and conditioning trainers, should consider individual differences in strength development and be aware of rapid periods of growth in stature when planning and designing muscular strength training regimes.

scholarly journals Evaluación de la factibilidad de un sistema de entrenamiento combinado en el desarrollo de fuerza explosiva de los miembros inferiores de los taekwondocas (Assessment of the feasibility of a combined training system in the development of explosive streng

Retos ◽  
2020 ◽  
pp. 411-420
Author(s):  
Lisbet Guillen Pereira ◽  
Angel Freddy Rodriguez Torres ◽  
Giovanny Capote Lavandero ◽  
Pablo Anthony Rendón Morales ◽  
María Elena Lagla Melendres ◽  
...  
Keyword(s):  
Vertical Jump ◽  
Training System ◽  
Lower Limbs ◽  
Test Protocol ◽  
Squat Jump ◽  
Combined Training ◽  
Explosive Strength ◽  
Post Test ◽  
Explosive Force ◽  
The Impact

 La investigación se centró en evaluar el impacto de un sistema de entrenamiento combinado para desarrollar la fuerza explosiva de los miembros inferiores de los taekwondocas, viene a reforzar el enfoque del desarrollo de la capacidad mediante una lógica metodológica que parte de la creación de las condiciones morfológicas y funcionales para asegurar la potenciación de una hipertrofia sarcoplasmática, como base del desarrollo de la hipertrofia sarcomérica y finalmente favorecer la conversión a potencia y el desarrollo de la fuerza explosiva, en concordancia se transitó por un diagnóstico, elaboración y validación, utilizando convenientemente métodos y técnicas como: entrevista, encuesta, observación, la prueba, la medición, el criterios de experto, la estadística descriptiva e inferencial y el pre-experimento, este último con tres momentos (pre-test/ intervención de 16 semanas/ post-test), participaron 20 taekwondocas universitarios Categoría Sénior y dos entrenadores. Se consideró la evaluación de la fuerza máxima (1RM) de los planos musculares que intervienen directamente en las técnicas de pateo, por estar asociada con la calidad del reclutamiento de la fibras motoras; la evaluación de la fuerza explosiva se realizó mediante el test de salto vertical: Squat Jump (SJ) extraído del protocolo del test de Bosco, para ello fue necesario emplear una plataforma de contacto digital. Los datos se compararon mediante una prueba T de diferencias de medias, cuyos resultados mostraron cambios significativos (p= .000) entre el pre y post tratamiento, verificándose Hi, concluyendo que el sistema de entrenamiento combinado mejoró el desarrollo de la fuerza explosiva de los miembros inferiores de los taekwondocas.  Summary: The research focused on assessing the impact of a combined training system to develop the explosive strength of the lower limbs of the taekwondoins. It wants to reinforce the approach of capacity development through a methodological logic that starts from the creation of morphological and functional conditions to ensure the enhancement of a sarcoplasmic hypertrophy, as a basis for the development of sarcomeric hypertrophy, and finally, favor the conversion to power and the development of the explosive force. At the same time, it went through a diagnosis, elaboration and data validation, using propper methods and techniques such as: interview, survey, observation, testing, measurement, expert criteria, descriptive and inferential statistics, and the pre-experiment. The last one with three stages (pre-test / 16-week intervention / post-test) Twenty senior category university taekwondoins and two coaches participated. The evaluation of the maximum force (1RM) of the muscular planes that directly influence in the kicking techniques was considered. As it was associated to the quality of motor fiber recruitment; The evaluation of the explosive force was performed using the vertical jump test: Squat Jump (SJ) extracted from the Bosco test protocol. For this, it was necessary to use a digital contact platform. The data were compared using a T-test, the results of which showed significant changes (p = .000) between the pre and post treatment, verifying Hi. Concluding that the combined training system improved the development of the explosive strength of the limbs lower of the taekwondoinst.

scholarly journals REGRESSION ALGORITHMS IN ASSESSING THE IMPACT OF MORPHOLOGICAL AND MOTOR CHARACTERISTICS ON 60-M SPRINT

2019 ◽  
pp. 221
Author(s):  
Milica Filipović ◽  
Veroljub Stanković ◽  
Milan Čoh ◽  
Biljana Vitošević ◽  
Dragana Radosavljević
Keyword(s):  
Motor Skills ◽  
High Reliability ◽  
Statistical Significance ◽  
Vertical Jump ◽  
Age Groups ◽  
Morphological Characteristics ◽  
Sprint Performance ◽  
Explosive Power ◽  
Upper And Lower Extremities ◽  
The Impact

The aim of the present study was to identify the relationship between morphological parameters and motor skills that are important for sprint performance in children aged 8 to 16 years divided into four age groups (U10, U12, U14, U16) in both genders. The sample consisted of two hundred eighty one participant who trained sprinting in various athletic clubs. A prediction set of twenty-five variables for assessing morphological characteristics and motor skills was applied, and the criterion variable was a sprint at 60m. Using multiple correlation, it has been established that a large number of morphological characteristics are statistically significant positive correlation with the sprint, especially the longitudinal variables, while the variables of skinfolds showed a low negative statistical significance in relation to the given criterion. In the field of motor skills, the highest number of positive statistically significant correlations were found in the tests of explosive power of the upper and lower extremities, agility test and horizontal and vertical jump tests. In order to determine which morphological features and motor skills should be applied in sprint running training, we tested related attributes using different algorithms for data mining (LR, M5, KNN, SVM, MLP, RBF). The results suggests that the predictors that we use can continue to be applied with high reliability in assessing sprint performance, but also in the monitoring of the training process in order to profile the better sprint achievements.

scholarly journals Short-Term Compound Training on Physical Performance in Young Soccer Players

Sports ◽  
2020 ◽  
Vol 8 (8) ◽  
pp. 108 ◽  
Author(s):  
Athos Trecroci ◽  
Marco Duca ◽  
Damiano Formenti ◽  
Giampietro Alberti ◽  
F. Marcello Iaia ◽  
...  
Keyword(s):  
Vertical Jump ◽  
The Other ◽  
Soccer Players ◽  
Plyometric Training ◽  
Countermovement Jump ◽  
Short Term ◽  
Squat Jump ◽  
Change Of Direction ◽  
Compound Training ◽  
Strength Exercises

This study aimed to investigate the effects of a five-week compound training (with strength and plyometric exercises performed on separate days) on sprint, change of direction, and vertical jump in young soccer players. Eighteen novices in strength and plyometric training were assigned to either a compound training (CMPT) or a control condition (CNT). Both groups trained three times per week. One session was dedicated to soccer-specific drills. The other two weekly sessions were dedicated to circuit-based training routines employing on one-day strength exercises and on the other day plyometric exercises in the CMPT group. At the same time, the CNT group performed two weekly soccer-specific training sessions. All players were tested by 15-m sprint, change-of-direction and acceleration test (CODAT), squat jump, and countermovement jump with arms swing tests. CMPT group improved CODAT, squat jump and countermovement jump to a higher extent compared to CNT group (large vs small or trivial effects, p < 0.05), while both groups had similar 15-m sprint performance (p > 0.05). These results support the use of compound training to improve change of direction and vertical jump performances in young novice soccer players, which are unfamiliar with structured and advanced strength and plyometric training.

Eficiency of Jumping Preparation in Younger Pupils in Athletics

2020 ◽  
Author(s):  
Ivan Čillík ◽  
Miriam Karperová
Keyword(s):  
Motor Performance ◽  
Vertical Jump ◽  
Lower Limbs ◽  
Training Process ◽  
Running Speed ◽  
Output Measurement ◽  
Arm Swing ◽  
Explosive Power ◽  
Standing Long Jump ◽  
Long Jump

The aim was to find out, compare and evaluate the eficiency of take-off preparation for selected indicators of motor performance in athletes in the category of younger pupils. The monitored group consisted of 5 girls (average age 12.4 ± 0.22 year) and 4 boys (average age 12.9 ± 0.12 year) regularly participating in the training process three times a week. During 8 weeks in the racing period, take-off preparation was applied in the training pro-cess, consisting of two different batteries of take-off drills. The take-off preparation took place two to three times a week, taking into account the participation of athletes in the race. We performed the following tests to determine the eficiency of the take-off preparation to change the level of motor performance in selected indicators: 50m run, 20m cursory run, standing long jump, vertical jump with countermovement without arm swing and repeated vertical take-off drills without arm swing in 10s. We found that in the output measurement, the athletes of monitored group achieved an improvement in motor performance in tests for explosive power of lower limbs and the maximum running speed tests.

scholarly journals Explosive strength evolution of Romanian professional rugby players – Backs

2021 ◽  
Vol 8 (3) ◽  
pp. 37-43
Author(s):  
Oprean Alexandru ◽  
Puni Alexandru-Rares ◽  
Ungurean Bogdan-Constantin ◽  
Cojocariu Adrian
Keyword(s):  
Body Mass ◽  
Lower Limbs ◽  
Total Body Mass ◽  
Squat Jump ◽  
Explosive Strength ◽  
The Past ◽  
Explosive Power ◽  
Strength Evolution ◽  
Total Body ◽  
Rugby Players

The purpose of this study is to highlight the evolution of the explosive strength in the 4-year interval of the backs compartment and the level of adaptation to the game requirements. The hypothesis in this study is that the explosive strength of the lower limbs in rugby backs developed during the past 4 years, trying to keep up with the higher needs in the first Romanian league. Explosive power was measured using the ‘Just Jump System’, which is a plyometric test mat on which the players conducted a set of three tests: squat jump, control movement jump and free jump. The forwards significantly improved their explosive strength in a 4-year period. Although the total body mass got bigger, the players managed to improve their lower limbs’ explosive strength; this fact proves a good physical adaptation to the requirements of the rugby game.   Keywords: Power, jump.

scholarly journals DIFFERENCES IN AGILITY AND EXPLOSIVE POWER OF BASKETBALL PLAYERS IN RELATION TO THEIR POSITIONS ON THE TEAM

2019 ◽  
Vol 16 (2) ◽  
pp. 739
Author(s):  
Milan Mitić ◽  
Miloš Paunović ◽  
Mladen Živković ◽  
Nikola Stojanović ◽  
Ivana Bojić ◽  
...  
Keyword(s):  
Drop Jump ◽  
Anova Analysis ◽  
Basketball Players ◽  
Squat Jump ◽  
Explosive Power ◽  
Counter Movement Jump ◽  
Rapid Changes ◽  
Center Position ◽  
Direction Of Movement ◽  
Post Hoc

Basketball is a sports game which consists of rapid changes in direction of movement, sudden stopping and starting for driving and dribbling and a great number of jumps. The various positions on a basketball team precisely determine the requirements for specific forms of movement, even though contemporary basketball strives for all players in all positions to possess the aforementioned abilities. A sample of 15 male basketball players, divided into three groups of five players each, based on their positions on the team, including the guard, forward and center position, was used to determine differences in agility (Agility T Test, Hexagon Agility Тest, Illinois Agility Test и Lane Agility Drill) and explosive power (the Squat jump, Countermovement Jump, Drop Jump and One-legged Counter Movement Jump). To determine the differences between the basketball players in relation to their positions on the team, the ANOVA analysis for independent samples was used as was a post-hoc analysis. The research results have indicated that there is a difference between the guard position compared to the forward and center position.

Sign in / Sign up

Export Citation Format

Share Document