scholarly journals The Role of Anthropometric Parameters on Single-Leg Balance Performance in Young Sub-Elite Soccer Players

2020 ◽  
Vol 8 (3) ◽  
pp. 589-597
Author(s):  
Dirk Krombholz ◽  
Luca Daniel ◽  
Peter Leinen ◽  
Thomas Muehlbauer ◽  
Stefan Panzer
Keyword(s):  
Body Weight ◽  
Center Of Pressure ◽  
Dynamic Balance ◽  
Body Height ◽  
Force Plate ◽  
Young Male ◽  
Soccer Players ◽  
Balance Performance ◽  
Anthropometric Parameters

The main purpose of this study was to determine the covariation of anthropometric parameters and the center of pressure (CoP) of young soccer players. Sub-elite young male players between 16 and 17 years (N = 42) were instructed to perform single-leg balance tasks under different conditions: static and dynamic balance on firm and foam ground. Single-leg balance was measured with a Kistler force plate. The measures of postural control were the CoP displacement in anterior-posterior and medio-lateral directions. Further, the following anthropometric variables were assessed: body height, body weight, foot length, and foot width. Results indicated only two small-sized correlations between body height/weight and the CoP measures. The covariation between body height, body weight, and the CoP measures for the single-leg stance in young male sub-elite soccer players was less than 10%.

Single-Leg Balance Performance in Sub-Elite Young Soccer Players and Swimmers as a Function of Age and Sports Experience

2019 ◽  
Vol 7 (3) ◽  
pp. 374-388 ◽  
Author(s):  
Peter Leinen ◽  
Thomas Muehlbauer ◽  
Stefan Panzer
Keyword(s):  
Center Of Pressure ◽  
Dynamic Balance ◽  
Age Groups ◽  
Force Plate ◽  
Soccer Players ◽  
Functional Specialization ◽  
Balance Performance ◽  
Balance Test ◽  
Balance Task ◽  
Anterior Posterior

The present study investigated if accumulated, advanced, regular soccer practice (balance-demanding exercise) compared to regular swim practice (non-balance–demanding exercise) induces a more pronounced functional specialization in postural control. Therefore, single-leg balance performance in sub-elite young soccer players (under 13 [U13]: n = 16; U15: n = 18; U19: n = 15), and sub-elite young swimmers (U13: n = 7; U15: n = 4; U19: n = 5) was tested in different balance task conditions (i.e., static and dynamic balance on firm and foam surface). All athletes practiced 3–10 times per week. Single-leg balance of the dominant and non-dominant leg was measured using a force plate. The standard deviation of the center of pressure displacements in anterior-posterior and medio-lateral directions were used as dependent variables. Irrespective of age groups and type of sport, the results failed to indicate significant leg differences in single-leg balance performance. The soccer players showed significant better single-leg balance performance in anterior-posterior direction in the dynamic balance test on the firm and foam surface compared to the swimmers. Functional specialization was accompanied by the type of sport but not by accumulated practice.

GENDER COMPARISON STUDY OF ANTHROPOMETRIC PARAMETER IN YOUNG VOLLEYBALL PLAYERS

2020 ◽  
pp. 13-18
Author(s):  
Anisa Nurja
Keyword(s):  
Body Weight ◽  
Waist Circumference ◽  
Body Height ◽  
Young Male ◽  
Anthropometric Measurement ◽  
Anthropometric Parameters ◽  
Anthropometric Measures ◽  
Anthropometric Parameter ◽  
Volleyball Players ◽  
The Mean

An important role in whole performance of volleyballers plays the anthropometric parameters. Anthropometric differences mostly define the position and the role of the players in the court. The aim of this study was to determine the difference in some anthropometric parameters of young female volleyball players and young male volleyball players. This study assess 22 young boys volleyballer (17.1± 1.8 SD) and 25 young girls volleyballer (16.9 ± 1.9 SD) located in Tirana. Anthropometric measures assessed were: body-height, body-weight, body-waist circumference. Equipment used for measuring were digital scale with height rod (Health O meter professional scales) and flexible metric tape. Independent samples test and t-test were used to analyze quantitative data. Boys had the mean and SD of body-height (177.95 ± 8.351) while girls showed the mean and SD (165.52 ± 6.593). In terms of body-weight, boys were presented with mean and SD (71.9 ± 8.608) while the girls had the mean and SD (62.39 ± 10.597). Boys displayed a mean value in waist-circumference (81.18 ± 5.413) while girls showed the mean and SD of (73.79 ± 7.475). This research provided an original comparison of anthropometric measurement between boys and girls on young volleyball players where boys had larger mean of body-weight, body-height and body – waist circumference.

scholarly journals Effects of white Gaussian noise on dynamic balance in healthy young adults

2021 ◽  
Vol 11 (1) ◽  
Author(s):  
Ziyou Zhou ◽  
Can Wu ◽  
Zhen Hu ◽  
Yujuan Chai ◽  
Kai Chen ◽  
...  
Keyword(s):  
Young Adults ◽  
Gaussian Noise ◽  
Center Of Pressure ◽  
Dynamic Balance ◽  
White Gaussian Noise ◽  
Fluctuation Analysis ◽  
Balance Performance ◽  
Short Term ◽  
Crossover Point ◽  
Short Time

AbstractIt has been known that short-time auditory stimulation can contribute to the improvement of the balancing ability of the human body. The present study aims to explore the effects of white Gaussian noise (WGN) of different intensities and frequencies on dynamic balance performance in healthy young adults. A total of 20 healthy young participants were asked to stand at a dynamic balance force platform, which swung along the x-axis with an amplitude of ± 4° and frequency of 1 Hz. Their center of pressure (COP) trajectories were recorded when they were stimulated by WGN of different intensities (block 1) and different frequencies (block 2). A traditional method and detrended fluctuation analysis (DFA) were used for data preprocessing. The authors found that only with 75–85 dB WGN, the COP parameters improved. WGN frequency did not affect the dynamic balance performance of all the participants. The DFA results indicated stimulation with 75 dB WGN enhanced the short-term index and reduced the crossover point. Stimulation with 500 Hz and 2500 Hz WGN significantly enhanced the short-term index. These results suggest that 75 dB WGN and 500 Hz and 2500 Hz WGN improved the participants’ dynamic balance performance. The results of this study indicate that a certain intensity of WGN is indispensable to achieve a remarkable improvement in dynamic balance. The DFA results suggest that WGN only affected the short-term persistence, indicating the potential of WGN being considered as an adjuvant therapy in low-speed rehabilitation training.

scholarly journals „Z”-scores of anthropometric and motor parameters of girls in aerobic gymnastics

2014 ◽  
Vol 61 (2) ◽  
pp. 55-58
Author(s):  
M. Tibenská ◽  
H. Medeková
Keyword(s):  
Body Weight ◽  
Body Height ◽  
Sport Performance ◽  
Z Score ◽  
Anthropometric Parameters ◽  
Percentage Of Body Fat ◽  
Standing Long Jump ◽  
Z Scores ◽  
Long Jump ◽  
Shuttle Run

Abstract This study presents the evaluation of chosen anthropometric and motor parameters in group of female junior competitors throughout the course of 2-year preparation of aerobic gymnastics by means of Z-scores. The observed group consisted of 12 girls (average age at the beginning of observance 14.08 ± 1.19 years). Evaluation of anthropometric (body height, body weight, body mass index, percentage of body fat, acting body weight) and motor parameters (sit-ups in 30 seconds and 60 seconds, pull-ups to bar, modified push-ups, standing long jump, backwards tandem walking, shuttle run 4×10 m, Jacík’s test) was carried out in standard conditions in nine girls at 3-month intervals. It has been confirmed that female probands with higher Z-score of motor parameters together with lower Z-score of anthropometric parameters achieved higher sport performance during the 2-year observance at competitions, with an exception of one such proband.

Dynamic and Static Assessment of Single-Leg Postural Control in Female Soccer Players

2020 ◽  
Vol 29 (2) ◽  
pp. 174-178
Author(s):  
Kelly M. Meiners ◽  
Janice K. Loudon
Keyword(s):  
Lower Extremity ◽  
Postural Stability ◽  
Postural Sway ◽  
Center Of Pressure ◽  
Force Plate ◽  
Soccer Players ◽  
Balance Test ◽  
Left Lower Extremity ◽  
Static Assessment ◽  
Dynamic Postural Stability

Purpose/Background: Various methods are available for assessment of static and dynamic postural stability. The primary purpose of this study was to investigate the relationship between dynamic postural stability as measured by the Star Excursion Balance Test (SEBT) and static postural sway assessment as measured by the TechnoBody™ Pro-Kin in female soccer players. A secondary purpose was to determine side-to-side symmetry in this cohort. Methods: A total of 18 female soccer players completed testing on the SEBT and Technobody™ Pro-Kin balance device. Outcome measures were anterior, posterior medial, and posterior lateral reaches from the SEBT and center of pressure in the x- and y-axes as well as SD of movement in the forward/backward and medial/lateral directions from the force plate on left and right legs. Bivariate correlations were determined between the 8 measures. In addition, paired Wilcoxon signed-rank tests were performed to determine similarity between limb scores. Results: All measures on both the SEBT and postural sway assessment were significantly correlated when comparing dominant with nondominant lower-extremities with the exception of SD of movement in both x- and y-axes. When correlating results of the SEBT with postural sway assessment, a significant correlation was found between the SEBT right lower-extremity posterior lateral reach (r = .567, P < .05) and summed SEBT (r = .486, P < .05) and the center of pressure in the y-axis. A significant correlation was also found on the left lower-extremity, with SD of forward/backward movement and SEBT posterior medial reach (r = −.511, P < .05). Conclusions: Dynamic postural tests and static postural tests provide different information to the overall assessment of balance in female soccer players. Relationship between variables differed based on the subject’s lower-extremity dominance.

scholarly journals Associations Between Variations in Accumulated Workload and Physiological Variables in Young Male Soccer Players Over the Course of a Season

2021 ◽  
Vol 12 ◽  
Author(s):  
Hadi Nobari ◽  
Ana Ruivo Alves ◽  
Filipe Manuel Clemente ◽  
Jorge Pérez-Gómez ◽  
Cain C. T. Clark ◽  
...  
Keyword(s):  
Strong Association ◽  
Body Height ◽  
Young Male ◽  
Peak Height ◽  
Soccer Players ◽  
Height Velocity ◽  
Peak Height Velocity ◽  
Intermediate Period ◽  
Physiological Variables ◽  
Fitness Levels

This study sought to analyze the relationship between in-season training workload with changes in aerobic power (VO2max), maximum and resting heart rate (HRmax and HRrest), linear sprint medium (LSM), and short test (LSS), in soccer players younger than 16 years (under-16 soccer players). We additionally aimed to explain changes in fitness levels during the in-season through regression models, considering accumulated load, baseline levels, and peak height velocity (PHV) as predictors. Twenty-three male sub-elite soccer players aged 15.5 ± 0.2 years (PHV: 13.6 ± 0.4 years; body height: 172.7 ± 4.2 cm; body mass: 61.3 ± 5.6 kg; body fat: 13.7% ± 3.9%; VO2max: 48.4 ± 2.6 mL⋅kg–1⋅min–1), were tested three times across the season (i.e., early-season (EaS), mid-season (MiS), and end-season (EnS) for VO2max, HRmax, LSM, and LSS. Aerobic and speed variables gradually improved over the season and had a strong association with PHV. Moreover, the HRmax demonstrated improvements from EaS to EnS; however, this was more evident in the intermediate period (from EaS to MiS) and had a strong association with VO2max. Regression analysis showed significant predictions for VO2max [F(2,20) = 8.18, p ≤ 0.001] with an R2 of 0.45. In conclusion, the meaningful variation of youth players’ fitness levels can be observed across the season, and such changes can be partially explained by the load imposed.

scholarly journals The Effect of Teeth Clenching on Dynamic Balance at Jump-Landing: A Pilot Study

2017 ◽  
Vol 33 (3) ◽  
pp. 211-215
Author(s):  
Tomomasa Nakamura ◽  
Yuriko Yoshida ◽  
Hiroshi Churei ◽  
Junya Aizawa ◽  
Kenji Hirohata ◽  
...  
Keyword(s):  
Muscle Activity ◽  
Masseter Muscle ◽  
Center Of Pressure ◽  
Dynamic Balance ◽  
Reaction Force ◽  
Force Plate ◽  
Vertical Ground Reaction Force ◽  
Jump Landing ◽  
Teeth Clenching ◽  
Vertical Ground

The aim of this study was to analyze the effect of teeth clenching on dynamic balance at jump landing. Twenty-five healthy subjects performed jump-landing tasks with or without teeth clenching. The first 3 trials were performed with no instruction; subsequently, subjects were ordered to clench at the time of landing in the following 3 trials. We collected the data of masseter muscle activity by electromyogram, the maximum vertical ground reaction force (vGRFmax) and center of pressure (CoP) parameters by force plate during jump-landing. According to the clenching status of control jump-landing, all participants were categorized into a spontaneous clenching group and no clenching group, and the CoP data were compared. The masseter muscle activity was correlated with vGRFmax during anterior jump-landing, while it was not correlated with CoP. In comparisons between the spontaneous clenching and the no clenching group during anterior jump-landing, the spontaneous clenching group showed harder landing and the CoP area became larger than the no clenching group. There were no significant differences between pre- and postintervention in both spontaneous clenching and no clenching groups. The effect of teeth clenching on dynamic balance during jump-landing was limited.

scholarly journals Comparison of the level of coordination motor abilities in boys with sensory impairments and able-bodied peers

2012 ◽  
Vol 26 (4) ◽  
pp. 55-62
Author(s):  
Izabela Rutkowska ◽  
Katarzyna Stranowska ◽  
Bartosz Molik ◽  
Grzegorz Bednarczuk ◽  
Krzysztof Koc ◽  
...  
Keyword(s):  
Spatial Orientation ◽  
Dynamic Balance ◽  
Statistical Significance ◽  
Body Height ◽  
Lower Limbs ◽  
Whole Body ◽  
Anthropometric Parameters ◽  
Motor Abilities ◽  
Sensory Impairments ◽  
Global Coordination

Abstract Introduction: Looking for solutions to improve physical fitness of persons with sensory impairments, both in the context of physiotherapy and the creation of adapted physical activity programs in the physical education and extracurricular activities, it seems important to determine the effect of sensory impairments at the level of coordination motor abilities (CMA). The aim of the study was to compare the coordination motor abilities of blind, deaf and able-bodied boys aged 14-17. Material and methods: The research was carried out on 37 boys: totally blind students (14) from the Education Centre for Blind Children in Laski, deaf students (18) from Deaf Institute in Warsaw and able-bodied peers (15) from School No.51 in Warsaw. The following tests evaluating selected CMA were used in the research: spatial orientation, dynamic balance, high frequency of movement, rhythmicising, kinesthetic differentmiation, connection of movement. Participants performed motor tests such as: walking into goal, turn on a bar of a gym bench, flat tapping, rhythmic drumming of upper and lower limbs, long jump at 50% capacity, transfering a gym stick, skiping with clapping under the knees, The Starosta Global Coordination Test. Measurements and evaluation of basic anthropometric parameters were done as well as Body Mass Index was calculated. Means of results of every tests were evaluated through nonparametric Krauskal-Wallis test. Statistical significance between the groups was determined using the U Mann-Whitney test. Results: Coordination motor abilities differentiated the groups of boys - blind, deaf and able-bodied. The lowest level of the CMA was obtained in a group of blind boys and there were only little differences between the deaf and able-bodied participants. For the blind boys the most difficult test was rotation on the bench gym, which may indirectly indicate low level of dynamic balance. Conclusions: The ability to rhythmic whole body and spatial orientation were the CMA that needed improvement in the group of deaf boys. There is no correlation between the results obtained in tests of CMA and body height, weight, BMI and age of individuals

Standing Balance Performance and Knee Extensors’ Strength in Diabetic Patients with Neuropathy

2020 ◽  
Vol 36 (3) ◽  
pp. 171-177
Author(s):  
Hananeh Younesian ◽  
Nader Farahpour ◽  
Mehrdokht Mazde ◽  
Martin Simoneau ◽  
Katia Turcot
Keyword(s):  
Conduction Velocity ◽  
Center Of Pressure ◽  
Force Plate ◽  
Sensory Nerve ◽  
Quadriceps Strength ◽  
Knee Extensors ◽  
Control Group ◽  
Diabetic Patients ◽  
Balance Performance ◽  
Type 2 Diabetic Patients

Diabetes peripheral neuropathy (DPN) leads to balance impairment among diabetes mellitus (DM). The aims of this study were to (1) distinguish between DM patients who have/do not have DPN and to (2) compare quadriceps’ strength and balance performance of DM, DPN, and healthy groups. Fifteen healthy females and 33 females with type 2 diabetic patients participated. The electrodiagnostic method was used to classify diabetic patients into DM and DPN. A dynamometer was used to measure quadriceps’ strength. Single-leg standing on a force plate was also used to quantify participants’ balance. Smaller conduction velocity and amplitude and greater distal latency of all nerves were observed in the DPN compared with the DM in particular for sensory nerve. In DPN, conduction velocity was asymmetrical. The quadriceps’ strength of both legs in DPN and the right leg in DM was smaller than in the control group. The root mean square of the center of pressure was similar between DM and DPN. But it was larger in DPN than in the control group. DPN is associated with asymmetrical conduction velocity, smaller quadriceps’ strength, and weaker balance performance that is suggestive of higher risk of falling. Balance training is recommended for the DPN group during their rehabilitation to reduce their falling risk.

scholarly journals Effect of Milwaukee brace on static and dynamic balance of female hyperkyphotic adolescents

2012 ◽  
Vol 37 (1) ◽  
pp. 76-84 ◽  
Author(s):  
Arezoo Eshraghi ◽  
Nader Maroufi ◽  
Mohammad Ali Sanjari ◽  
Hassan Saeedi ◽  
Mohammad Reza Keyhani ◽  
...  
Keyword(s):  
Sagittal Plane ◽  
Center Of Pressure ◽  
Balance Control ◽  
Dynamic Balance ◽  
Normal Subjects ◽  
Balance Performance ◽  
Functional Reach ◽  
Significant Difference ◽  
The Right ◽  
Milwaukee Brace

Background: Biomechanical factors, such as spinal deformities can result in balance control disorders. Objectives: The purpose of this study was to examine the effect of bracing on static and dynamic balance control of hyperkyphotic female adolescents. Study Design: Clinical trial. Methods: A force platform was employed to record center of pressure (COP) parameters. Ten adolescents undergoing Milwaukee brace for hyperkyphosis and 14 normal subjects participated in the study. The COP data were collected with and without brace immediately on first day and after 120 days of continuous brace wear. Results: No significant difference was found in dynamic and static balance tests with and without brace on the first day ( P > 0.05). After 120 days, the values of COP displacement in functional reach to the right and left for the hyperkyphotic adolescents when performing without brace enhanced significantly compared to the first day. The forward reach distance was not significantly different between the normal and hyperkyphotic subjects ( P = 0.361); however, hyperkyphotic participants had significantly smaller reach distance in the functional reach to the right (21.88 vs. 25.56cm) and left (17.04 vs. 21.25cm). Conclusion: It might be concluded that bracing had a possible effect on improvement of dynamic balance performance, because the subjects could reach the target in dynamic reach tests with higher displacement in sagittal plane without losing their balance control. Clinical relevance Little is known about the biomechanical aspects of brace wear in individuals with hyperkyphosis. This study investigated balance differences between the healthy and hyperkyphotic individuals, and outcomes of Milwaukee brace wear. It might provide some new insight into the conservative treatment of hyperkyphosis for clinicians and researchers.

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