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.

scholarly journals The Effects of Different Types of Eccentric Overload Training on Strength, Speed, Power and Change of Direction in Female Basketball Players

2020 ◽  
Vol 5 (3) ◽  
pp. 50
Author(s):  
Joey O Brien ◽  
Declan Browne ◽  
Des Earls
Keyword(s):  
Training Stimulus ◽  
Post Intervention ◽  
Basketball Players ◽  
Squat Jump ◽  
Change Of Direction ◽  
Back Squat ◽  
Counter Movement Jump ◽  
Overload Training ◽  
Post Hoc ◽  
Eccentric Overload

The aim of this study was to investigate the effect of two types of eccentric (ECC) overload training on strength, speed, power and change of direction in female basketball players. Twenty amateur basketball players (mean ± SD: age: 23.67 ± 6.05 years; height: 1.73 ± 0.05 m; body mass: 80.28 ± 17.67 kg) participated in a randomized trial. The players performed either flywheel inertial training (FIT) (n = 11) or tempo ECC training (TET) (n = 9) for 4 weeks, performing two sessions weekly. Performance characteristics, one repetition back squat (1RM), counter-movement jump (CMJ), squat jump (SJ), 10-metre sprint (10 m), change of direction (COD) and sit and reach flexibility (S&R) were tested pre and post intervention. Post-hoc testing revealed significant improvements in the FIT group for 1RM (p ≤ 0.001; ES = 0.59), 10 m (p = 0.003; ES = −0.54) and CMJ (p ≤ 0.001; ES = 1.04), while significant improvements were revealed in the TET group for 1RM (p = 0.007; ES = 0.71) and S&R (p ≤ 0.001; ES = 0.58). In conclusion, both FIT and TET groups demonstrated a positive training stimulus for increasing muscular strength. FIT may produce superior adaptions in CMJ and 10-m sprint, while TET may produce superior adaptions in S&R. Neither group achieved increases in either SJ or COD.

scholarly journals A Comparison of Isokinetic Knee Strength and Power Output Ratios Between Female Basketball and Volleyball Players

2017 ◽  
Vol 18 (3) ◽  
Author(s):  
Jarosław Kabaciński ◽  
Michał Murawa ◽  
Anna Fryzowicz ◽  
Lechosław Bogdan Dworak
Keyword(s):  
Power Output ◽  
Peak Torque ◽  
Quadriceps Muscle ◽  
Maximal Power ◽  
Basketball Players ◽  
Maximal Power Output ◽  
Squat Jump ◽  
Knee Strength ◽  
Counter Movement Jump ◽  
Volleyball Players

AbstractPurpose. Tests such as the counter movement jump (CMJ) and squat jump (SJ) allow for determining the ratio of maximal power output generated during SJ to CMJ (S/C). The isokinetic peak torque ratio of the hamstrings contracting eccentrically to the quadriceps contracting concentrically (H/Q) is defined as functional H/Q. The purpose of this study was to compare the S/C and functional H/Q between female basketball and volleyball players. Methods. The total of 14 female basketball players (age, 19.8 ± 1.4 years) and 12 female volleyball players (age, 22.3 ± 4.2 years) participated in the study. A piezoelectric force platform was used for the CMJ and SJ. Moreover, isokinetic tests of the hamstrings and quadriceps muscle torque during eccentric and concentric contraction were performed. Results. The results of the S/C and functional H/Q at 90 deg · s

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 The Occurrence of Different Vertical Jump Types in Basketball Competition and their Relationship with Lower-Body Speed-Strength Qualities.

2021 ◽  
Vol 1 (1) ◽  
Author(s):  
Scott Talpey ◽  
Andrew Smyth ◽  
Mathew O'Grady ◽  
Matthew Morrison ◽  
Warren Young
Keyword(s):  
Vertical Jump ◽  
Lower Body ◽  
Basketball Players ◽  
Squat Jump ◽  
Professional Basketball ◽  
Counter Movement Jump ◽  
One Step ◽  
Run Up ◽  
Standing Start ◽  
Vertical Jumps

Jumps occur frequently in basketball and can be executed from a single-leg take-off following a run-up or bilaterally from a standing start. Understanding the type of jumps performed in competition and how different muscular qualities influence their performance, informs training prescription. Firstly, to quantify the occurrence of different jump types performed in competition an analysis of 15 semi-professional basketball games was undertaken. Secondly, to understand the influence of muscular qualities on performance of different jump types, Semi-professional male basketball players (N=17) performed jump tests; standing vertical jump, running vertical jumps with a double leg take-off (RVJ2) and a single leg take-off (RVJ1) and tests of lower-body speed-strength; reactive strength index (RSI) from a drop jump, counter movement jump (CMJ) and squat jump.  A stationary approach was employed for 69%, a running approach for 26% and a one-step approach for 5%. RVJ1 displayed non-significant (P=0.07) moderate correlation with jump height attained from the CMJ (r=0.439) and a very large (r =.806) significant (P<0.01) correlation with RSI. Most jumps were executed from a stationary start with a bilateral take-off while a run-up occurred prior to a substantial proportion of jumps. Jumps with a single-leg take-off from a run-up strongly correlate with RSI.

scholarly journals Training Effects of Plyometric Training on Jump Parameters in D- And D/C-Squad Badminton Players

2014 ◽  
Vol 1 (2) ◽  
pp. 22-33
Author(s):  
M Fröhlich ◽  
H Felder ◽  
M Reuter
Keyword(s):  
Dynamic Performance ◽  
Technical Training ◽  
Drop Jump ◽  
Plyometric Training ◽  
Short Term ◽  
Squat Jump ◽  
Counter Movement Jump ◽  
Before And After ◽  
Force Data ◽  
Positive Effect

Plyometric training is popular among individuals involved in dynamic sports, and plyometric exercises such as jumping, hopping, skipping and bounding are executed with the goal of increasing dynamic muscular performance, especially jumping. Much less information is available on the effectiveness of plyometric training (PT) in badminton, where jumping high (e.g. forehand overhead jump-smash) is important for success. The aim of the study was to investigate the effects of an 8-week periodized PT program on jumping high and power among male and female junior badminton players, using high-impact bilateral plyometric exercises. Starting and finishing with the biomechanical diagnostics of the squat jump (SJ), counter movement jump (CMJ), and drop jump (DJ) on force plates, kinematic analysis of forehand overhead smashes, anthropometric data as well as force data for pre- and posttest were analyzed. Before and after the biomechanical diagnostics, the players (n=11) undergo an 8-week PT (2 units per week) with a total of 2286 jumps. 8 male and 3 female junior badminton players (age: 16.0±1.6 years, height: 175.5±9.9 cm, mass: 69.3±11.4 kg) were tested in jumping high and forehand overhead jump-smashes performance. Looking at the plyometric strength parameters of the squat jump (P<0.05; dz=0.8) and the floor reaction-time of the drop jump (P<0.05; dz=1.1), the positive effect of the 8-week PT in junior badminton players is significant. Consequently, this form of training is essential for the development of junior and top-level badminton players. Moreover, the study has shown that the contact of the overhead smash cannot be increased by improving plyometric strength training (P>0.05). Therefore, the focus must be on technical training. Consequently, it is considered to be important to include short-term PT in in-season preparation in order to improve complex badminton-specific dynamic performance (smash-jumping).

scholarly journals Sensibilidade e especificidade do diagnóstico de desempenho da força por diferentes testes de saltos verticais em futebolistas e voleibolistas na puberdade

2013 ◽  
Vol 19 (5) ◽  
pp. 367-370 ◽  
Author(s):  
Jefferson Eduardo Hespanhol ◽  
Miguel de Arruda ◽  
Marcus Antonio Cossío Bolaños ◽  
Rodrigo Lopes Pignataro Silva
Keyword(s):  
Drop Jump ◽  
Squat Jump ◽  
Counter Movement Jump

OBJETIVO: Avaliar a sensibilidade e a especificidade de diferentes protocolos de medida dos testes de saltos verticais para o diagnóstico da força explosiva em futebolistas e voleibolistas na puberdade. MÉTODOS: Estudo transversal com população não probabilística de 110 jovens atletas do sexo masculino (60 futebolistas e 50 voleibolistas) na faixa etária de 13 a 18 anos pertencentes a clubes da região metropolitana de Campinas, SP, Brasil. Os participantes tiveram sua maturação biológica avaliada por dois métodos: autoavaliação e medida clínica. Após essa avaliação, foram incluídos os classificados como púberes (25 futebolistas e 23 voleibolistas). Foram coletados dados antropométricos (massa corporal, estatura e dobras cutâneas) e testes de saltos verticais: squat jump (SJ), counter movement jump (CMJ), drop jump (DJ; 40 cm height) e saltos verticais contínuos com cinco segundos de duração (CJ5s). Foram calculadas as medidas de desempenho diagnóstico: sensibilidade, especificidade e acurácia. O nível de significância adotado foi 5% para todos os testes. RESULTADOS: As forças explosivas estimadas pelos métodos de SJ e CMJ apresentaram sensibilidades equivalentes, enquanto o SJ apresentou maior especificidade do que os três métodos, e a acurácia do SJ foi diferente dos outros métodos, a qual foi alta (superior a 80%). CONCLUSÃO: O diagnóstico da força explosiva como teste SJ apresentou sensibilidade e especificidade elevadas, com seu valor preditivo alto na puberdade.

scholarly journals CARACTERÍSTICAS ANTROPOMÉTRICAS E MOTORAS EM JOGADORES DE FUTEBOL: DIFERENÇAS ENTRE CATEGORIAS SUB17, SUB19 E PROFISSIONAL.

2019 ◽  
Vol 27 (3) ◽  
pp. 13
Author(s):  
Diego Hilgemberg Figueiredo ◽  
Diogo Hilgemberg Figueiredo ◽  
Helcio Rossi Gonçalves ◽  
Luiz Claudio Reeberg Stanganelli ◽  
Antônio Carlos Dourado
Keyword(s):  
Squat Jump ◽  
Counter Movement Jump ◽  
Para Determinar ◽  
Post Hoc

O objetivo do presente estudo foi analisar e comparar as características antropométricas e motoras de atletas pertencentes as categorias Sub17, Sub19 e Profissional. Todos os dados foram coletados anteriormente ao início da temporada competitiva. A amostra deste estudo foi composta por 48 futebolistas masculinos divididos em três grupos: Sub17 (n=14), Sub19 (n=14) e Profissional (n=14). Para avaliar as características antropométricas foram realizadas avaliações de estatura e de composição corporal por meio de Plestimografia por deslocamento de ar. Já para determinação das características motoras foram realizados o teste de resistência aeróbia (Yo-Yo IR1); Counter movement jump (CMJ); Squat jump (SJ); performance de sprint 5m e 30m e potência anaeróbia (RAST teste) para determinação das potências máxima, média e mínima. Para determinar as diferenças entre as categorias no que se refere as características antropométricas e motoras uma ANOVA one way de medidas repetidas complementando-se com o teste post-hoc de Bonferroni foi utilizado, levando-se em consideração um nível de significância de p>0,016. Atletas profissionais apresentaram maiores valores de peso corporal e massa magra absoluta se comparadas as categorias Sub17 e Sub19, não sendo identificadas diferenças para massa gorda absoluta e relativa e massa magra relativa. Não foram identificadas diferenças antropométricas entre os atletas das categorias Sub17 e Sub19. Atletas profissionais apresentaram valores de CMJ, SJ, sprint de 30m e potência máxima, média e mínima maiores do que atletas Sub17 e Sub19, não apresentando diferença em relação ao Yo-Yo IR1 e sprint de 5m. Atletas Sub19 apresentaram maiores valores de Yo-Yo IR1 se comparados ao Sub17 e Profissionais e maiores valores de CMJ, sprint de 30m e potência média e mínima se comparado aos atletas Sub17. Atletas de diferentes categorias apresentam características antropométricas e motoras distintas, enfatizando a importância em acompanhar o desenvolvimento destas características de acordo com a idade.

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 SÉRIES MÚLTIPLAS DE SQUAT JUMP AUMENTAM O SALTO VERTICAL DE SALTADORES DE ELITE NO ATLETISMO?

2018 ◽  
Vol 26 (1) ◽  
pp. 39
Author(s):  
Tulio Alfano Moura ◽  
Leonardo Dos Santos Oliveira ◽  
Robson Furlan Ricardo ◽  
Marcelo Alves Costa ◽  
Victor Hugo Alves Okazaki
Keyword(s):  
Drop Jump ◽  
Squat Jump

Em provas do atletismo que requerem potência muscular, há uma maior tendência de utilização de fibras do tipo II. Desta forma, exercícios de força como atividade condicionante podem acarretar em melhora no processo de contração muscular e no desempenho da atividade seguinte. Portanto, o objetivo do estudo foi analisar o efeito de diferentes atividades condicionantes na altura de salto vertical em atletas de provas de salto no atletismo. Doze atletas de elite do atletismo brasileiro (7 homens e 5 mulheres; 16 a 27 anos), em início de temporada esportiva, realizaram um teste de salto vertical com contra-movimento. Os testes foram realizados após três condições em dias distintos, a saber: I) Sem Atividade Condicionante (Controle), II) Squat Jump com 80% da massa corporal e III) Drop Jump de uma altura de 40cm. Foram realizados três saltos verticais após cada atividade condicionante. Adotou-se um intervalo de três minutos entre a realização da atividade condicionante e salto vertical e de um minuto entre cada tentativa de salto vertical. Foi demonstrado efeito do fator atividade condicionante para a altura de salto vertical, F(11, 22) = 9,69; P < 0,001. A condição Squat Jump apresentou maior altura do salto vertical quando comparada à condição controle (P = 0,003; ?2 = 0,64). Em contrapartida, não foi encontrado aumento do salto vertical na condição Drop Jump quando comparada à condição controle (P = 0,99). O número de saltos e o limitado controle da técnica utilizada durante a realização do Drop Jump podem ter influenciado o desempenho do salto vertical. Desta forma, o aparecimento da potencialização pós-ativação está condicionado à intensidade e à natureza da atividade condicionante. Por conseguinte, sugerimos que a realização de Squat Jump pode ser benéfica para o desempenho de atletas de modalidades de potência.

scholarly journals CORRELAÇÃO ENTRE O PICO DO SINAL ELETROMIOGRÁFICO EM SALTOS E VALORES MÉDIOS DO CONTROLE POSTURAL EM ATLETAS DE HANDEBOL E PRATICANTES DE MUSCULAÇÃO DO SEXO FEMININO

2018 ◽  
Vol 26 (1) ◽  
pp. 22
Author(s):  
Samuel Klippel Prusch ◽  
Igor Martins Barbosa ◽  
Hyago Bernardes Da Rosa ◽  
Vinicius Da Silva Lessa De Oliveira ◽  
Lucas Souza Santos ◽  
...  
Keyword(s):  
Porto Alegre ◽  
Squat Jump ◽  
Contrôle Postural ◽  
Counter Movement Jump ◽  
De Se

O objetivo do presente estudo foi correlacionar valores da atividade eletromiográfica dos músculos de membros inferiores de saltos verticais com valores do controle postural de mulheres ativas. Fizeram parte do estudo 28 indivíduos, sendo todos mulheres, divididas em dois grupos, onde 16 se encontravam no Grupo Handebol (GH) e 12 no Grupo Musculação. Para aquisição do sinal EMG dos músculos foi utilizado um eletromiógrafo Miotec (Porto Alegre, Brasil), com quatro canais de entrada operando na frequência de 2000 Hz, para os músculos: bíceps femoral, reto femoral, vasto lateral, e gastrocnêmico medial. Para avaliação dos saltos, utilizou-se os saltos Squat Jump (SJ) e Counter Movement Jump (CMJ), sendo usada a média dos dois melhores saltos de cada categoria. O pico do percentual da contração voluntária isométrica máxima (CVIM) na fase de impulsão de cada um dos saltos foi utilizado para as correlações em cada um dos quatro músculos avaliados. O controle postural foi avaliado através do teste de permanecer o mais imóvel possível durante 30 segundos, em apoio bipodal e unipodal direito. As variáveis referentes ao controle postural foram oriundas da média do percentual da CVIM ao longo dos 30 segundos analisados do controle postural. Para análise dos dados foi utilizado teste ''t'' para amostras independentes. Já as correlações foram obtidas através do teste de Pearson, além do critério de Malina para avaliar a força de correlação entre as variáveis. O nível de significância para todos os testes foi de 5%. Como resultados foram observados que tais grupos possuem características físicas bastante semelhantes. Contudo, é de se pensar que, em virtude de tempos de práticas e horas semanais de atividades distintas, seus músculos possuam certas diferenças funcionais e morfológicas. Assim, a plasticidade muscular sendo resposta para as entre os grupos.

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