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 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.

Short-Term Effects of Kinesio Taping on Muscle Recruitment Order During a Vertical Jump: A Pilot Study

2018 ◽  
Vol 27 (4) ◽  
pp. 319-326 ◽  
Author(s):  
Guillermo Mendez-Rebolledo ◽  
Rodrigo Ramirez-Campillo ◽  
Eduardo Guzman-Muñoz ◽  
Valeska Gatica-Rojas ◽  
Alexis Dabanch-Santis ◽  
...  
Keyword(s):  
Ground Reaction Force ◽  
Lower Limb ◽  
Vertical Jump ◽  
Reaction Force ◽  
Countermovement Jump ◽  
Short Term ◽  
Male Athletes ◽  
Squat Jump ◽  
Kinesio Taping ◽  
Recruitment Order

Context: Kinesio taping is commonly used in sports and rehabilitation settings with the aim of prevention and treatment of musculoskeletal injuries. However, limited evidence exists regarding the effects of 24 and 72 hours of kinesio taping on trunk and lower limb neuromuscular and kinetic performance during a vertical jump. Objective: The purpose of this study was to analyze the short-term effects of kinesio taping on height and ground reaction force during a vertical jump, in addition to trunk and lower limb muscle latency and recruitment order. Design: Single-group pretest–posttest. Setting: University laboratory. Participants: Twelve male athletes from different sports (track and field, basketball, and soccer). Interventions: They completed a single squat and countermovement jump at basal time (no kinesio taping), 24, and 72 hours of kinesio taping application on the gluteus maximus, biceps femoris, rectus femoris, gastrocnemius medialis, and longissimus. Main Outcome Measures: Muscle onset latencies were assessed by electromyography during a squat and countermovement jump, in addition to measurements of the jump height and normalized ground reaction force. Results: The kinesio taping had no effect after 24 hours on either the countermovement or squat jump. However, at 72 hours, the kinesio taping increased the jump height (P = .02; d = 0.36) and normalized ground reaction force (P = .001; d = 0.45) during the countermovement jump. In addition, 72-hour kinesio taping reduced longissimus onset latency (P = .03; d = 1.34) and improved muscle recruitment order during a countermovement jump. Conclusions: These findings suggest that kinesio taping may improve neuromuscular and kinetic performance during a countermovement jump only after 72 hours of application on healthy and uninjured male athletes. However, no changes were observed on a squat jump. Future studies should incorporate a control group to verify kinesio taping’s effects and its influence on injured athletes.

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 Unilateral Plyometric Training is Superior to Volume-Matched Bilateral Training for Improving Strength, Speed and Power of Lower Limbs in Preadolescent Soccer Athletes

2020 ◽  
Vol 74 (1) ◽  
pp. 161-176
Author(s):  
Vasileios Drouzas ◽  
Christos Katsikas ◽  
Andreas Zafeiridis ◽  
Athanasios Z. Jamurtas ◽  
Gregory C. Bogdanis
Keyword(s):  
Lower Limb ◽  
Training Group ◽  
Sprint Performance ◽  
Lower Limbs ◽  
Control Group ◽  
Plyometric Training ◽  
Countermovement Jump ◽  
Balance Test ◽  
Squat Jump ◽  
Bilateral Training

Abstract This study compared the effects of unilateral and bilateral plyometric training on strength, sprint performance and lower limb power. Sixty-eight preadolescent soccer athletes were randomly assigned to a unilateral plyometric training group (n=23), a bilateral plyometric training group (n=23) and a control group (n=22). Both plyometric training groups trained with equal volumes of unilateral or bilateral exercises for 15 minutes in each session, at which time the control group performed soccer-specific drills. Plyometric exercises were executed twice weekly for 10 weeks during the competitive season. The following tests were performed before and after the intervention: single-leg and double-leg countermovement jump, squat jump, horizontal jumps in different directions, maximal isometric strength of quadriceps and hamstrings, sprint performance, agility and balance. Unilateral plyometric training resulted in greater improvements compared to the control group in the following variables: hamstrings strength (ES: 0.91, p=0.037), 5m sprint time (ES: 0.93, p=0.004), single-leg countermovement jump (ES: 0.90, p=0.006), single- and double-leg squat jump (ES: 0.87, p=0.030 and ES: 0.73, p=0.067, respectively) and single-leg hop performance (ES: 1.01, p=0.004). The only tests where there was an improvement of BPT compared with the CG were the single-leg and double leg SJ (ES: 0.76, p=0.026; ES: 0.70, p=0.050). Quadriceps strength, side hop test, double-leg horizontal jump test, flamingo balance test and modified agility T-test were equally improved in all three groups (p<0.001). In conclusion, unilateral lower-limb plyometric training is more effective in increasing muscle strength and power in preadolescent soccer players when compared to bilateral training or soccer training alone.

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 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 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.

scholarly journals Effects of Strength Training Combined with Specific Plyometric exercises on body composition, vertical jump height and lower limb strength development in elite male handball players: a case study

2014 ◽  
Vol 41 (1) ◽  
pp. 125-132 ◽  
Author(s):  
Alberto Carvalho ◽  
Paulo Mourão ◽  
Eduardo Abade
Keyword(s):  
Body Composition ◽  
Strength Training ◽  
Body Fat ◽  
Lower Limb ◽  
Vertical Jump ◽  
Fat Content ◽  
Lower Limbs ◽  
Strength Development ◽  
Lower Limb Strength ◽  
Body Fat Content

AbstractThe purpose of the present study was to identify the effects of a strength training program combined with specific plyometric exercises on body composition, vertical jump (VJ) height and strength development of lower limbs in elite male handball players. A 12-week program with combined strength and specific plyometric exercises was carried out for 7 weeks. Twelve elite male handball players (age: 21.6 ± 1.73) competing in the Portuguese Major League participated in the study. Besides the anthropometric measurements, several standardized jump tests were applied to assess VJ performance together with the strength development of the lower limbs in an isokinetic setting. No significant changes were found in body circumferences and diameters. Body fat content and fat mass decreased by 16.4 and 15.7% respectively, while lean body mass increased by 2.1%. Despite small significance, there was in fact an increase in squat jump (SJ), counter movement jump (CMJ) and 40 consecutive jumps after the training period (6.1, 3.8 and 6.8%, respectively). After the applied protocol, peak torque increased in lower limb extension and flexion in the majority of the movements assessed at 90°s-1. Consequently, it is possible to conclude that combining general strength-training with plyometric exercises can not only increase lower limb strength and improve VJ performance but also reduce body fat content.

scholarly journals The effects of neuromuscular performance and perceptual parameters in futsal athletes playing consecutive games

2020 ◽  
Vol 19 (4) ◽  
pp. 292
Author(s):  
Cristiane Blausius Salvi Hübner ◽  
Cristiano André Hübner ◽  
Martim Gomes Weber ◽  
Fernando De Souza Campos ◽  
Renan Felipe Hartmann Nunes ◽  
...  
Keyword(s):  
Outcomes Research ◽  
Perceived Exertion ◽  
Vertical Jump ◽  
Team Sports ◽  
Rating Of Perceived Exertion ◽  
Test Results ◽  
Countermovement Jump ◽  
Squat Jump ◽  
Neuromuscular Performance ◽  
Jump Test

The present study aims to analyze the effects of consecutive futsal games on neuromuscular performance and rating of perceived exertion in athletes. Fourteen male futsal players (16.5 ± 0.51 years, 67.5 ± 11.1 kg; 1.73 ± 0.08 cm; 22.5 ± 2.3kg/m²) from a youth futsal team took part at the study. Our research monitored the team throughout the 4-day qualifying phase of the Campeonato Paranaense de Futsal (the Youth Futsal Championship of the State of Paraná, Brazil). The athletes underwent the following tests immediately after each futsal match: vertical jump test (Squat Jump (SJ)), Countermovement Jump test (CMJ), and a rating of perceived exertion (s-RPE) session. Magnitude based inference analysis reported CMJ values likely lower after the 2nd match when compared with the results obtained after the 1st and 4th matches: (ES= -0.46 low) and (ES= -0.53 moderate), respectively. Furthermore, SJ values reported after the 2nd match are likely lower if compared with the outcomes obtained after the 1st match (ES= -0.56 moderate) and possibly lower when compared with the 3rd matches (ES= -0.45 low). PSE results were significantly different comparing the 1st and 2nd matches (p=0.04); the 1st and 3rd matches (p=0.01); and the 3rd and 4th matches (p=0.01). Moreover, the outcomes research obtained after the 1st match are very likely to be lower when compared with the results from the 2nd (ES= -0.97 high) and 3rd matches (ES= high); and almost certain lower when compared with the 2nd and 3rd matches (ES= -0.45 low). Test results research obtained after the 4th match are very likely to be lower than the ones from the 2nd (EF=-0.83 high) and 3rd matches (ES= 1.01 high). Thus, by investigating the youth futsal tournament, the study could observe under-17 athletes delivered a decreased performance in vertical jump tests throughout the 4-consecutive-day championship, which can be associated with an increased rating of perceived exertion.Keywords: team sports, physical performance, fatigue, muscle damage.

scholarly journals GAMBARAN KOMPONEN FISIK PREDOMINAN (KOMPONEN FISIK DASAR) PELATIH SSO REAL MADRID FIK UNY TAHUN 2016

2019 ◽  
Vol 2 (1) ◽  
pp. 47
Author(s):  
Fatkurahman Arjuna
Keyword(s):  
Vertical Jump ◽  
Squat Jump ◽  
Multistage Test ◽  
Vertical Jumps ◽  
Push Up

Penelitian ini bertujuan untuk mengetahui gambaran komponen fisik predominan (komponen fisik dasar) pelatih SSO Real Madrid FC FIK UNY 2016.  Adapun komponen fisik predominan (komponen fisik dasar) yang diukur meliputi kekuatan, daya tahan otot, speed, kelincahan, kelentukan, power dan daya tahan dasar (kardiovaskuler). Desain yang digunakan dalam penelitian ini adalah penelitian survai, dengan teknik tes. Subjek penelitian ini adalah pelatih SSO Real Madrid FC FIK UNY tahun 2016 sebanyak 11 orang. Instrumen yang digunakan untuk kekuatan otot punggung dan tungkai dalah leg and back dynamometer. Daya tahan otot perut diukur dengan tes sit up, daya tahan otot lengan dan bahu dengan tes push up, daya tahan otot tungkai dengan tes squat jump. Speed dengan tes lari 30 meter. Kelincahan dengan tes beam side step. Kelentukan dengan alat flexometer. Power otot tungkai dengan tes vertical jumps. Daya tahan umum (kardiovascular) dengan multistage test.  Hasil penelitian menunjukkan bahwa pelatih SSO Real Madrid FC FIK UNY 2016 secara umum memiliki kekuatan otot punggung yang baik sekali dengan rata-rata 138,7 kg. Pengukuran kekuatan otot tungkai menunjukkan rata-rata 170,9 kg yang artinya mayoritas pelatih memiliki kekuatan otot tungkai yang cukup dan kurang. Pelatih SSO Real Madrid FC secara umum memiliki daya tahan otot perut yang kurang dengan rata-rata sit up 45,5 kali dan daya tahan otot lengan dan bahu yang baik dan cukup dengan rata-rata push up 20,9 kali. Sedangkan daya tahan otot tungkai secara umum masuk kategori kurang dengan rata-rata squat jump 16,4 kali. Pelatih SSO Real Madrid FC memiliki speed yang kurang dengan rata-rata 4,826 detik. Hasil pengukuran menunjukkan seluruh pelatih memiliki kelincahan yang kurang dengan rata-rata 27,4 detik. Hasil penelitian menunjukkan bahwa seluruh pelatih memiliki kelentukan yang sempurna dengan rata-rata 37,9 cm. Hasil pengukuran power menunjukkan rata-rata vertical jump 45,8 cm, yang artinya pelatih SSO Real Madrid FC memiliki power yang cukup. Sementara hasil penelitian menunjukkan bahwa pelatih SSO Real Madrid FC secara umum memiliki tingkat daya tahan umum (kardiovaskuler) yang kurang dengan rata-rata 33,67 ml.kg/menit.

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