scholarly journals Postactivation potentiation improves jumps performance in children ages 6 to 8 years old

2021 ◽  
Vol 38 (3) ◽  
pp. 192-196
Author(s):  
C Gerber ◽  
P Sirieiro ◽  
I Nasser ◽  
C Taber ◽  
H Miranda
Keyword(s):  
Body Mass ◽  
Vertical Jump ◽  
Cross Sectional Study ◽  
Postactivation Potentiation ◽  
Cross Sectional ◽  
Jump Performance ◽  
Jumping Performance ◽  
Jump Test ◽  
Low Load ◽  
Vertical Jumps

Introduction: The aim of the present study was to investigate the effects of postactivation potentiation (PAP) in vertical and horizontal jump performance in pre-pubertal children. Material and method: One hundred and nineteen children (65 girls and 54 boys; 6.8 ± 0.7 years old; 124.5 ± 6.4 cm; 25.2 ± 5.1 kg) participated in this study. This was a transversal cross-sectional study which incorporated a within-subjects repeatedmeasures design, where participants completed all protocols. The experimental procedure required four total testing, separated by one week, using a counterbalanced. This study investigated jumping performance associated with weighted jumps, lowload vertical jumps, and horizontal jumps. During two sessions the participants performed vertical jumps with and without PAP, the other two sessions the same procedures were performed for horizontal jumps. The PAP protocol consisted of one set of five weighted countermovement jumps with low-load (10% of body mass) and a rest interval of four minutes prior to the jump tests. Paired t-tests were used between conditions (PAP and control) in the vertical jump and horizontal jump test. In addition, Cohen’s d effect size and 95% confidence interval was used. Results: Significant jump height was observed in the vertical jump in the PAP condition compared to the control condition (p = 0.007). Similar results were observed for the horizontal jump tests, with significant longer distance observed in the PAP condition (p = 0.036). Conclusions: Pre-pubertal children can benefit from the effects of PAP in vertical and horizontal jumping performance when preceded by low-load ballistic movements. A protocol implementing low-loads, determined by a relative percentage of body mass is effective to promote PAP for young children.

scholarly journals HUBUNGAN TINGKAT KECUKUPAN ENERGI, PROTEIN DAN INDEKS MASSA TUBUH (IMT) DENGAN POWER ATLET BELADIRI

2018 ◽  
Vol 12 (1) ◽  
pp. 34
Author(s):  
Laila Maulida Hidayah ◽  
Lailatul Muniroh
Keyword(s):  
Body Mass Index ◽  
Body Mass ◽  
Vertical Jump ◽  
Normal Activity ◽  
Cross Sectional Study ◽  
The Body ◽  
Cross Sectional ◽  
Martial Art ◽  
Jump Test ◽  
The Relationship

Athletes require greater energy and protein than people with normal activity to balance the body’s metabolic rate. The body mass index is a factor which directly related to the physical performance of martial-art athletes. The objective of this study was to analyze the relationship between energy, protein suffi ciency and body mass index with power of martial-art athletes. This research was observational analytic with cross sectional study design. Samples were consisted of 46 athletes who has won at least one martial art games. Data were collected through interview. Energy and protein adequacy level were measured by 2 × 24 hours food recall questionnaires; body weight and height measured by digital scale and microtoice; and power was measured with vertical jump test. There was a positive relationship between adequacy level of protein (p = 0.011) and athletes’s power, but negative correlation between BMI and athlethes’s power (p = 0.019). There was no relationship between the adequacy level of energy with power of martial-art athletes. It was concluded that increament of protein adequacy level could increase athlete’s power. Otherwise, escalation of body mass index could decrease the power of athletes. Therefore, it is needed to monitor nutrient intake and BMI to increase the power of martial-art athletes.

Effects of Eccentric Preloading on Concentric Vertical Jump Performance in Youth Athletes

2019 ◽  
Vol 35 (5) ◽  
pp. 327-335 ◽  
Author(s):  
Zachary M. Gillen ◽  
Lacey E. Jahn ◽  
Marni E. Shoemaker ◽  
Brianna D. McKay ◽  
Alegra I. Mendez ◽  
...  
Keyword(s):  
Vertical Jump ◽  
Random Order ◽  
Jump Condition ◽  
Thigh Muscle ◽  
Ultrasound Images ◽  
Cross Sectional ◽  
Jump Performance ◽  
Youth Athletes ◽  
Muscle Cross Sectional Area ◽  
Vertical Jumps

This study measured peak force (PF), peak rate of force development (PRFD), peak power (PP), concentric impulse, and eccentric impulse during static jump (SJ), countermovement jump (CMJ), and drop jump (DJ) in youth athletes to examine changes in vertical jump power with progressively greater eccentric preloading in relation to age, maturity, and muscle mass. Twenty-one males ranging from 6 to 16 years old performed the following vertical jumps in a random order: SJ, CMJ, and DJ from drop heights of 20, 30, and 40 cm (DJ20, DJ30, and DJ40, respectively). Measurements included PF, PRFD, PP, eccentric impulse, and concentric impulse for each vertical jump condition. Maturity offset was calculated, while ultrasound images quantified thigh muscle cross-sectional area (CSA). PF and PRFD increased from CMJ to DJ20. PP increased from SJ to CMJ. Concentric impulse remained unchanged, but eccentric impulse increased systematically from across jumps. The change in PP from SJ to CMJ was correlated with age, height, weight, maturity offset, and CSA. The CMJ resulted in the greatest concentric PP with the least amount of eccentric preloading. The inability of young athletes to translate the energy absorbed during the eccentric phase of the stretch-shortening cycle of DJs may be influenced by growth and development.

scholarly journals AGILITY, SPRINT AND VERTICAL JUMP PERFORMANCE RELATIONSHIP IN YOUNG BASKETBALL PLAYERS

2021 ◽  
pp. 133-137
Author(s):  
Denis Čaušević ◽  
Ensar Abazović ◽  
Semir Mašić ◽  
Amila Hodžić ◽  
Šemso Ormanović ◽  
...  
Keyword(s):  
Correlation Analysis ◽  
Body Mass ◽  
Vertical Jump ◽  
T Test ◽  
Countermovement Jump ◽  
Basketball Players ◽  
Physical Demands ◽  
Jump Performance ◽  
Jumping Performance ◽  
Sprint Ability

This study aimed to examine the relation between agility, sprint ability, and vertical jump performance of young basketball players. Fifty (n=50) young basketball players (mean±SD: age = 12.63±0.95; height = 160.84±6.31 cm; body mass = 50.82±6.88 kg) participated in the study. The agility T-test and 505 test were assessed to determine agility, 10m and 20m sprint was measured to determine sprint ability and countermovement jump (CMJ) for jumping performance. The results of Pearson’s Product Moment Correlation analysis indicated large to very large relation between agility tests and sprint performance (r = 0.61 to 0.85); agility and jump performance (r = - 0.64 to - 0.67); sprint and jumping performance (r = -0.59 to -0.77). The results of the study suggest that agility, sprint, and jumping performance share common physical demands, therefore it is necessary to develop them during the training.

Estado nutricional y fuerza de tren inferior: diferencias entre sexo y área geográfica entre niños y niñas. (Nutritional status and lower train force: differences between gender and geographical area between boys and girls)

Retos ◽  
2021 ◽  
Vol 42 ◽  
pp. 612-617
Author(s):  
Matias Ruben López Ferrada ◽  
Fernando Javier Cerda Navarrete ◽  
Cristian José Oñate Navarrete ◽  
Roberto Lagos Hernandez
Keyword(s):  
Nutritional Status ◽  
Vertical Jump ◽  
Geographical Area ◽  
Geographic Area ◽  
Cross Sectional Study ◽  
Cross Sectional ◽  
Rural Sector ◽  
Urban Sector ◽  
Jump Test ◽  
Vertical Test

  El presente estudio transversal pretende determinar y establecer la asociación entre las variables de estado nutricional y fuerza en el segmento inferior entre estudiantes Chilenos correspondientes a la región de la Araucanía, pertenecientes a un sector urbano en contraste con estudiantes de un sector rural. La muestra fue de 120 escolares, divididos en 60 niños y 60 niñas cuyas edades fluctuaron entre los 10 y 11 años . Se realizó medición del IMC (Kg/H^2) para luego clasificar su estado nutricional y también la prueba de salto vertical Test de Sargent (fuerza de tren inferior) en la población escolar. Los grupos fueron comparados con la prueba estadística Chi-cuadrado con intervalos de confianza del 95 %. Para los resultados del test de Sargent se realizó correlación de Pearson. Se encontró una alta prevalencia de niñas de ambos sectores, encasilladas en el rango de sobrepeso y obesidad. Así mismo, presentan similitud en la prueba de salto vertical (test de Sargent) en donde no existieron diferencias significativas al momento de correlacionar entre sexo y área geográfica.  Abstact. The present cross-sectional study aims to determine an establish the association between the variables of nutritional status and lower segment in Chilean students from Araucanía Region an urban sector in contrast to students from a rural sector. The sample was 120 schoolchildren, divided into 60 boys and 60 girls whose ages fluctuated between 10 and 11 years of age. BMI (Kg / H ^ 2) was measured to later classify their nutritional status and also the Sargent vertical jump test (lower body strength) in the school population. The groups were compared with the statistical T-student test for independent samples with 95% confidence intervals. Pearson's correlation was performed for the results of the Sargent test. A high prevalence of girls from both sectors was found, classified as overweight and in the obesity range. Likewise, there are more overweight children in the urban sector than in the rural sector. Presenting similarity in the vertical jump test (Sargent test) where there were no significant differences when correlating between sex and geographic area.

scholarly journals Prevalence of Thinness among Santal Preschool Children Using New Body Mass Index Cut-Off Points

2011 ◽  
Vol 2011 ◽  
pp. 1-4
Author(s):  
Subal Das ◽  
Kaushik Bose
Keyword(s):  
Body Mass Index ◽  
Preschool Children ◽  
Nutritional Status ◽  
Body Mass ◽  
Cross Sectional Study ◽  
High Rate ◽  
Tribal Community ◽  
Community Based ◽  
Cross Sectional ◽  
Purulia District

A community-based cross-sectional study was undertaken to determine the prevalence of undernutrition using body mass index (BMI) among 2–6-year Santal preschool children of Purulia District, West Bengal, India. A total of 251 (116 boys and 135 girls) children from 12 villages were measured. Commonly used indicators, that is, weight, height, and BMI, were used to evaluate the nutritional status. More boys (59.5%) than girls (53.3%), based on BMI, were undernourished. Significant age differences in weight (F=44.29∗∗∗; df=3), height (F=58.48∗∗∗; df=3), and BMI (F=3.52∗∗∗; df=3) among boys were observed. Similarly, significant differences between ages in mean weight (F=56.27∗∗∗; df=3), height (F=64.76∗∗∗; df=3), and BMI (F=2.62∗∗∗; df=3) were observed among the girls. The present study revealed that the nutritional status of the preschool children of Santal tribal community of these villages was poor with very high rate of thinness in boys and girls (59.5% and 53.3%, resp.).

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