scholarly journals Relación entre el Movement change in karate position Test con el rendimiento neuromuscular en atletas de karate: Un estudio piloto (Relationship between Movement change in karate position Test and neuromuscular performance in karate athletes: A pilot stud

Retos ◽  
2020 ◽  
pp. 505-508
Author(s):  
Tomas Herrera-Valenzuela ◽  
Gricelle Miccono-González ◽  
Margaret Fazekas-Molina ◽  
Gonzalo Astorga-Rojas ◽  
Pablo Valdés-Badilla ◽  
...  
Keyword(s):  
Body Mass ◽  
Countermovement Jump ◽  
Squat Jump ◽  
Neuromuscular Performance ◽  
Long Jump ◽  
Physical Abilities ◽  
High Intensity Interval ◽  
Relationship Of ◽  
Movement Change ◽  
Karate Athletes

Resumen. Antecedentes: El karate es un deporte intervalado de alta-intensidad con características aeróbicas y anaeróbicas, la velocidad y la fuerza explosiva son habilidades físicas determinantes para los atletas de karate durante el combate. Problema y objetivo: El principal objetivo de este estudio fue examinar la relación del Movement change in karate position Test “MKUKS” con el rendimiento neuromuscular medido a través de pruebas de salto en atletas de karate categoría junior. Métodos: Una muestra de 10 atletas de karate, distribuidos en 4 hombres (edad:17.3 ± 2.1 años; masa corporal: 69.0 ± 15.8 kg; talla: 1.74 ± 0.04 m) y 6 mujeres (edad: 17.3 ± 1.6 años; masa corporal: 57.9 ± 2.5 kg; talla: 1.59 ± 0.04 m), pertenecientes a la selección chilena categoría junior fue evaluada. Resultados: Observamos una correlación entre el MKUKS con el salto largo bilateral (r = -.68, p = .03), squat jump (r = -.65, p = .04), el salto contramovimiento (r = -.70, p = .02), y salto contramovimiento con brazos (r = -.68, p = .03). Conclusiones: La prueba MKUKS se relaciona significativamente con el rendimiento neuromuscular en atletas de karate. Abstract. Background: Karate is a high intensity interval sport with aerobic and anaerobic characteristics, velocity and explosive strength are crucial physical abilities for karate athletes during the combat. Problem and Aim: The main objective of this study was to examine the relationship of the Movement change in karate position Test “MKUKS” with the neuromuscular performance measured through jump tests in karate athletes junior category Methods: A team of 10 karate athletes, distributed in 4 men (age: 17.3 ± 2.1 years; body mass: 69.0 ± 15.8 kg; height: 1.74 ± 0.04 m) and 6 women (age: 17.3 ± 1.6 years; body mass: 57.9 ± 2.5 kg; height: 1.59 ± 0.04 m), belonging to the Chilean national junior team was evaluated. Results: We observed a correlation between the MKUKS with the bilateral long jump (r = -.68, p = .03), squat jump (r = -.65, p = .04), countermovement jump (r = -. 70, p = .02), and countermovement jump with arms (r = -.68, p = .03). Conclusions: MKUKS is significantly related to neuromuscular performance in karate athletes.

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 Plyometric exercise combined with high-intensity interval training improves metabolic abnormalities in young obese females more so than interval training alone

2016 ◽  
Vol 41 (1) ◽  
pp. 103-109 ◽  
Author(s):  
Ghazi Racil ◽  
Hassane Zouhal ◽  
Wassim Elmontassar ◽  
Abderraouf Ben Abderrahmane ◽  
Maysa Vieira De Sousa ◽  
...  
Keyword(s):  
Oxygen Uptake ◽  
Physical Fitness ◽  
Body Mass ◽  
Interval Training ◽  
Peak Oxygen Uptake ◽  
Z Score ◽  
High Intensity Interval Training ◽  
Squat Jump ◽  
Plyometric Exercise ◽  
High Intensity Interval

The aim of this study was to compare the effects of 12 weeks of high-intensity interval training (HIIT) with the effects of 12 weeks of plyometric exercise combined with HIIT (P+HIIT) on anthropometric, biochemical, and physical fitness data in young obese females. Sixty-eight participants (age, 16.6 ± 1.3 y; body mass, 82.8 ± 5.0 kg; body fat, 39.4% ± 3.3%; body mass index z score, 2.9 ± 0.4) were assigned to 1 of 3 groups: HIIT (2 blocks per session of 6–8 bouts of 30-s runs at 100% velocity at peak oxygen uptake, with 30-s active recovery between bouts at 50%velocity at peak oxygen uptake (n = 23)); P+HIIT (2 blocks per session of 3 different 15-s plyometric exercises with 15-s passive recoveries, totaling 2 min for each plyometric exercise + the same HIIT program (n = 26)); or control (no exercise (n = 19)). Anthropometric (body mass, body mass index z score, body fat, lean body mass, and waist circumference), biochemical (plasma glucose, insulin, leptin and adiponectin concentrations, leptin/adiponectin ratio, and homeostasis model assessment of insulin resistance (HOMA-IR)), physical fitness (peak oxygen uptake, velocity at peak oxygen uptake, squat jump, and countermovement jump performances), and energy intake data were collected. Both training programs improved the anthropometric, biochemical, and physical fitness variables. However, the P+HIIT program induced greater improvements than did the HIIT program in lean body mass (+3.0% ± 1.7%), plasma glucose and leptin concentrations (–11.0% ± 4.7% and –23.8% ± 5.8%, respectively), plasma leptin/adiponectin ratio (–40.9% ± 10.9%), HOMA-IR (–37.3% ± 6.2%), and squat jump performance (22.2% ± 7.5%). Taken together, these findings suggest that adding plyometric exercises to a HIIT program may be more beneficial than HIIT alone in obese female adolescents.

Relationship between explosive strength characteristics with change of direction speed in junior and cadet karate athletes

2021 ◽  
pp. 1-10
Author(s):  
Alex Ojeda-Aravena ◽  
Tomás Herrera-Valenzuela ◽  
Pablo Valdés-Badilla ◽  
Jairo Azócar-Gallardo ◽  
Victor Campos-Uribe ◽  
...  
Keyword(s):  
Multiple Regression Model ◽  
Superior Performance ◽  
Percentage Increase ◽  
Strength Index ◽  
Squat Jump ◽  
Change Of Direction ◽  
Explosive Strength ◽  
Physical Abilities ◽  
The Relationship ◽  
Karate Athletes

BACKGROUND: Explosive strength and change of direction speed (CODS) are relevant physical abilities in karate. OBJECTIVE: To examine the relationship between the characteristics of explosive strength and the 5-m linear sprint (5M) with CODS performance and ii) to examine the influential characteristics of explosive strength on CODS performance. METHODS: Eighteen cadet and junior karate athletes, eight females and ten males were evaluated. The physical abilities assessments included: squat jump (SJ), countermovement jump (CMJ), 5M and CODS. Also, pre-stretch percentage increase (PSA), eccentric utilization index (EUR) reactive strength index (RSI) were calculated. RESULTS: Superior performance (p< 0.05) was documented in SJ, CMJ and CODS in male vs. female. Also, significant correlations between CODS with SJ and CMJ (r=-0.70 to -0.80; R2=-0.51 to -0.73; p< 0.05, respectively) and correlations (r=-0.14 to -0.22; R2= 0.01 to 0.04; p> 0.05) between CODS with RSI, EUR and PSA. Multiple regression model documented that only SJ significantly influenced CODS performance in male (R2= 60%; p= 0.009) and female (R2= 71%; p= 0.001). CONCLUSION: CODS correlate with SJ and CMJ. In particular, SJ influence CODS independently of gender.

scholarly journals PREDICTION OF PHYSICAL VARIABLE TO SQUAT LONG JUMP ACHIEVEMENT (A MULTIVARIATE CORRELATIONAL STUDY ON TRAINED STUDENTS OF A STATE SENIOR HIGH SCHOOL IN PEKALONGAN REGENCY)

2018 ◽  
Vol 10 (2) ◽  
Author(s):  
Abdurachman Abdurrachman ◽  
Sugiyanto Sugiyanto ◽  
Muchsin Doewes
Keyword(s):  
Body Mass Index ◽  
Body Mass ◽  
Negative Relationship ◽  
Total Sample ◽  
Limb Length ◽  
Running Speed ◽  
Long Jump ◽  
Physical Abilities ◽  
Correlational Method ◽  
Linearity Test

Achievement of squat long jump needs to be supported with several components that are divided into anthropometric elements and physical abilities. This study aims to determine the relationship and the extent to which squat long jump achievement can predict limb length, body mass index, body flexibility, and running speed. The subjects of this research were trained students of state senior high schools in Pekalongan Regency, with a total sample of 60 students. The independent variables in this research included limb length, body mass index, body flexibility, and running speed, whereas the dependent variables consisted of long jump and squat style achievement. The data were obtained through the test and measurement of each variable. This study used multivariate correlational method. Data were analyzed with normality test, linearity test, simple and multiple regression analysis, and hypotheses were tested with t-test and F-test. The results showed that limb length, body mass index, and flexibility had a positive relationship, whereas body mass index and running speed had a negative relationship with the squat long jump achievement. The prediction value of limb length was 0.027, body mass index -0.049, body flexibility 0.026, and running speed -0.234. The conclusion of this study is that there was a significant relationship among the variables, and limb length, body mass index, body flexibility and running speed can be predicted based on squat long jump achievement.

scholarly journals Functional High-Intensity Interval Training Lowers Body Mass and Improves Coordination, Strength, Muscular Endurance, and Aerobic Endurance of Inmates in a German Prison

2021 ◽  
Vol 12 ◽  
Author(s):  
Milan Dransmann ◽  
Martin Koddebusch ◽  
Bernd Gröben ◽  
Pamela Wicker
Keyword(s):  
Body Mass ◽  
High Intensity ◽  
Motor Performance ◽  
Interval Training ◽  
Fat Free Mass ◽  
High Intensity Interval Training ◽  
Post Test ◽  
Long Jump ◽  
High Intensity Interval ◽  
The Times

This study examined the effects of circuit-like functional high-intensity interval training (HIIT) on body composition and motor performance of inmates in an open German prison. The group of inmates (n=11) consisted of predominantly overweight males [average body-mass-index (BMI)=31.2]. They performed 6weeks of training including 3 sessions per week. The 6-week training program was framed by a pre-test and a post-test that assessed anthropometry and motor performance. On average, the inmates participated in 91.9% of all training sessions. The intervention significantly lowered body mass (p=0.007) and BMI (p=0.006). Fat mass and fat-free mass did not change significantly from pre-test to post-test. The times in 20m sprint did not change. The performance in lateral jumping from side-to-side (p=0.024), standing long jump (p=0.001), and 30–15 Intermittent Fitness Test (p&lt;0.001) improved significantly. The greatest improvements were observed in the number of sit-ups (p&lt;0.001) and push-ups (p&lt;0.001). These findings suggest that (functional) HIIT is a practical and effective training method in the context of a prison.

scholarly journals Relación de la Asimetría Bilateral y el Déficit Bilateral con la Velocidad del Cambio de Dirección en Atletas Cadetes de Karate: Un estudio Piloto (Relationship of Bilateral Asymmetry and Bilateral Deficit with the Change of Direction Speed in Cadet Kara

Retos ◽  
2021 ◽  
Vol 42 ◽  
pp. 100-108
Author(s):  
Alex Ojeda-Aravena ◽  
Jairo Azócar-Gallardo ◽  
Tomás Herrera-Valenzuela ◽  
José Manuel García-García
Keyword(s):  
Negative Relationship ◽  
Bilateral Asymmetry ◽  
Bilateral Deficit ◽  
Change Of Direction ◽  
Explosive Strength ◽  
P 16 ◽  
Physical Abilities ◽  
Relationship Of ◽  
The Relationship ◽  
Karate Athletes

  Antecedentes: La Asimetría Bilateral (AB) y el Déficit Bilateral (DBL) y su potencial relación negativa con el rendimiento físico es actualmente estudiada, aunque la relación con la velocidad del cambio de dirección (CODS) y el sprint lineal (5-M) en atletas de karate se desconoce. Objetivo: Examinar las correlaciones entre la AB y el DBL con el CODS y 5-M, así como entre el salto horizontal con el CODS y 5-M. Métodos: Diez atletas hombres de categoría cadetes participaron voluntariamente de este estudio. Entre las habilidades físicas evaluadas se incluyeron: salto horizontal bilateral (SBJ), salto horizontal unilateral derecho (RSBJ), salto horizontal unilateral izquierdo (LSBJ), CODS y 5-M. Posteriormente, la AB y el DBL fueron calculados. Resultados: Se reportó una baja AB (5.17 ± 3.61%) y presencia de DBL (-36.9 ± 6.2 %). Correlaciones moderadas entre la AB con CODS (r = -.38; R2 = .15%; p = .30) y 5-M (r = -.47; R2 = .22%; p = .19) y entre DBL con 5-M (r = .51; R2 = .26%; p = .16) y bajas con CODS (r = .20; R2 = .04%; p = .60). Correlaciones significativas (p < .05) entre CODS con RSBJ (r = -.92; R2 = .85%; p = .00), SBJ (r = -.87; R2 = .75%; p = .00) y LSBJ (r = -.82; R2 = .67%; p = .00). Conclusiones: La AB y el DBL se relacionarían negativamente con el CODS y 5-M. Aunque, el CODS se relaciona con la fuerza explosiva horizontal bilateral y unilateral. Abstract. Background: Bilateral asymmetry (AB) and Bilateral Deficit (DBL) and their potential negative relationship with physical performance is currently studied, although the relationship with change of direction speed (CODS) and linear sprint (5-M) in karate athletes is unknown. Aim: To examine correlations between AB and DBL with CODS and 5-M, as well as between horizontal jump with CODS and 5-M. Methods: Ten male cadet athletes voluntarily participated in this study. The physical abilities assessed included: bilateral horizontal jump (SBJ), right unilateral horizontal jump (RSBJ), left unilateral horizontal jump (LSBJ), CODS and 5-M. Subsequently, AB and DBL were calculated. Results: Low AB (5.17 ± 3.61%) and presence of DBL (-36.9 ± 6.2 %) were reported. Moderate correlations between AB with CODS (r = -.38; R2 = .15%; p = .30) and 5-M (r = -.47; R2 = .22%; p = .19) and between DBL with 5-M (r = .51; R2 = .26%; p = .16) and low with CODS (r = .20; R2 = .04%; p = .60). Significant correlations (p < .05) between CODS with RSBJ (r = -.92; R2 = .85%; p = .00), SBJ (r = -.87; R2 = .75%; p = .00) and LSBJ (r = -.82; R2 = .67%; p = .00). Conclusions: AB and DBL would be negatively related to CODS and 5-M. However, CODS is related to bilateral and unilateral horizontal explosive strength.

scholarly journals Relationship Between Jump Performance and Sport Ages in U16 Basketball Players

2019 ◽  
Vol 8 (2) ◽  
pp. 207
Author(s):  
Ozlem Orhan ◽  
Sezen Cimen Polat ◽  
Imdat Yarim
Keyword(s):  
Body Mass Index ◽  
Body Weight ◽  
Body Mass ◽  
The Other ◽  
Countermovement Jump ◽  
Basketball Players ◽  
Jump Performance ◽  
Squat Jump ◽  
Significant Difference ◽  
Jump Ability

This study was conducted to evaluate the jump performance of youth basketball players according to their sport ages. 26 male basketball players (14.1&plusmn;1.6 year) who participated in the study were divided into two groups of sport ages of 4 and below (&le;4) and 6 and above (&ge;6). The group with sports ages &le;4 consisted of 12 male basketball players with a height of 162&plusmn;2.56 cm, a body weight of 51.4&plusmn;3.04 kg, a body mass index of 19.4&plusmn;0.74 kg/m&sup2;. The other group with sports ages &ge;6 consisted of 14 male basketball players with a height of 155.9&plusmn;1.98 cm, a body weight of 45.7&plusmn;1.85 kg, a body mass index of 18.8&plusmn;0.69 kg/m. All basketball players&rsquo; squat jump (SJ) and countermovement jump (CMJ) were measured (Optojump Microgate Bolzano, Italy). The Mann Whitney U test was used to determine whether there were differences between groups in terms of T flighttimes and jump heights. Statistically significant level of p&lt;0.05 was accepted. As a result of the study, no statistically significant difference was observed between the sport ages and SJ and CMJ splashes. In this respect, it can be considered that the Jump performance does not develop in parallel with the training age, and that the jump ability of this cause may be more related to motor skill and ability than the training age.

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 Effects of Nine-Month Lifestyle Intervention on Cardiometabolic Risk Factors: Sex Differences in Obese Individuals

Obesities ◽  
2021 ◽  
Vol 1 (1) ◽  
pp. 29-35
Author(s):  
Florent Besnier ◽  
Anil Nigam ◽  
Martin Juneau ◽  
Valérie Guilbeault ◽  
Elise Latour ◽  
...  
Keyword(s):  
Risk Factors ◽  
Body Composition ◽  
Sex Differences ◽  
Body Mass ◽  
Cardiometabolic Risk ◽  
Interval Training ◽  
Cardiometabolic Risk Factors ◽  
Obese Women ◽  
Baseline Values ◽  
High Intensity Interval

Limited data is available on the sex differences and individual responses of cardiometabolic parameters adjusted with potential confounders (i.e. sex, age, baseline values) after a longer term Mediterranean diet (MedD) and high intensity interval training (HIIT) in obese subjects. The objective of this study was to compare the effects of nine-month MedD counseling and supervised HIIT on cardiometabolic risk factors and individual responses in obese women (n = 99) and obese men (n = 35). Body composition (body mass, fat mass, lean body mass, waist circumference), cardiorespiratory fitness (METs), and cardiometabolic risk factors (blood pressure, blood sample variables) were measured at baseline and after nine months of a program combining MedD and HIIT two to three times a week. When adjusted with sex, age, and baseline values, obese women similarly improved their body composition, METs, and cardiometabolic risk factors vs. obese men. The proportion of responders according to clinical cutoff levels were the same in obese women and men. A longer MedD and HIIT intervention similarly improves body composition, cardiometabolic risk factors, and individual responses in obese women and men, even after adjustment of confounders (sex, age, baseline value).

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