Polymorphism of the PPARD Gene and Dynamic Balance Performance in Han Chinese Children

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.

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Concussion History and Balance Performance in Adolescent Rugby Union Players

The American Journal of Sports Medicine ◽

10.1177/0363546521998709 ◽

2021 ◽

pp. 036354652199870

Author(s):

Mark Matthews ◽

William Johnston ◽

Chris M. Bleakley ◽

Richard J. Davies ◽

Alan T. Rankin ◽

...

Keyword(s):

Dual Task ◽

Inertial Sensor ◽

Dynamic Balance ◽

Rugby Union ◽

Static Balance ◽

Balance Performance ◽

Eyes Closed ◽

History Of ◽

Concussion History ◽

Rugby Players

Background: Sports-related concussion is a worldwide problem. There is a concern that an initial concussion can cause prolonged subclinical disturbances to sensorimotor function that increase the risk of subsequent injury. The primary aim of this study was to examine whether a history of sports-related concussion has effects on static and dynamic balance performance in adolescent rugby players. Hypothesis: Dynamic balance would be worse in players with a history of concussion compared with those with no history of concussion. Study Design: Cross-sectional study; Level of evidence, 3. Methods: Male adolescent rugby players aged 14 to 18 years from 5 schools were recruited before the start of the 2018-2019 playing season. Participants completed questionnaires and physical tests, including dynamic Y balance and single-leg static balance (eyes closed) tests, while performing single and dual tasks. Dynamic balance was assessed using inertial sensor instrumentation. Dependent variables were normalized reach distance and the sample entropy (SEn) of the 3 axes ( x, y, and z). Results: Of the 195 participants, 100 reported a history of concussion. Those with a history of concussion demonstrated higher SEn in all directions, with highest values during anterior (standardized mean difference [SMD], 0.4; 95% CI, 0.0-0.7; P = .027) and posteromedial (SMD, 0.5; 95% CI, 0.2-0.9; P = .004) reach directions compared with those with no history. There was no difference between groups (concussion history vs control) in traditional Y balance reach distances in the anterior or posteromedial directions or single-leg static balance during both single- ( P = .47) and dual-task ( P = .67) conditions. Conclusion: Adolescent rugby union athletes with a history of concussion had poorer dynamic balance during performance tasks compared with healthy controls. Static single-leg balance tests, either single or dual task, may not be sensitive enough to detect sensorimotor deficits in those with a history of concussion.

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CORRELATIONS BETWEEN DYNAMIC BALANCE PERFORMANCE AND ISOKINETIC FUNCTIONS OF KNEE FLEXOR/EXTENSOR MUSCLES IN THE ELDERLY

Medicine & Science in Sports & Exercise ◽

10.1249/00005768-199505001-01303 ◽

1995 ◽

Vol 27 (Supplement) ◽

pp. S233 ◽

Cited By ~ 1

Author(s):

P. G. Siudmak ◽

J. F. Signorile ◽

M. H. Campbell ◽

A. Perry

Keyword(s):

Dynamic Balance ◽

The Elderly ◽

Balance Performance ◽

Knee Flexor ◽

Extensor Muscles

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Acute Effect of Mini-Trampoline Jumping on Vertical Jump and Balance Performance

International Journal of Kinesiology and Sports Science ◽

10.7575/aiac.ijkss.v.7n.2p.1 ◽

2019 ◽

Vol 7 (2) ◽

pp. 1

Author(s):

Nada Rhouni ◽

Nicole C. Dabbs ◽

Trevor Gillum ◽

Jared W. Coburn

Keyword(s):

Significant Interaction ◽

Peak Power ◽

Dynamic Balance ◽

Vertical Jump ◽

Rest Period ◽

Acute Effect ◽

Control Group ◽

Balance Performance ◽

Jump Performance ◽

Warm Up

Jumping and balance are necessary skills for most athletes, and mini-trampoline training has been shown to improve them. Little is known about the acute effect of mini-trampoline jumping on jump performance and dynamic balance. Objectives: The purpose of this study is to investigate the effect of 6 maximal jumps on a mini-trampoline on countermovement vertical jump (CMVJ) variables and on balance parameters. Methods: Twenty one recreationally trained individuals participated in three testing sessions and were either allocated to a control group (N=10) or a trampoline group (N=11). All the participants performed a dynamic warm up prior to their assessments. Baseline CMVJ and balance assessments were measured. For the jump performance tests, the control group rested for 30s, and the trampoline group performed 6 maximal CMVJs on a mini-trampoline. Immediately following the trampoline jumps or the rest period, participants performed three jump trials. The jumping protocol was repeated every minute up to 5 minutes and balance was reassessed immediately after only. Results: There was no significant interaction of time by group and no group effects in all the jumping parameters, however, there was a significant increase in jump height (p <0.001) post-condition, and a significant decrease in peak power (p= 0.01) at the 4th minute for both groups. There was no significant interaction of time by condition, no time effect and no group effect (p>0.05) on the balance variables. Conclusion: These results do not support our hypothesis and show that trampoline jumping does not improve jump and balance performance acutely.

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Adolescents’ Postural Control Learning According to the Frequency of Knowledge of Process

Journal of Motor Learning and Development ◽

10.1123/jmld.2017-0042 ◽

2019 ◽

Vol 7 (2) ◽

pp. 204-214

Author(s):

Julián Gandía ◽

Xavier García-Massó ◽

Adrián Marco-Ahulló ◽

Isaac Estevan

Keyword(s):

Postural Control ◽

Motor Skills ◽

Dynamic Balance ◽

Influential Factors ◽

Physical Education Teachers ◽

Balance Performance ◽

Mean Velocity ◽

Post Test ◽

Control Learning ◽

Skills Learning

Feedback is one of the most influential factors for motor skills learning. Physical Education teachers commonly use verbal cues to provide knowledge of process (KP) when teaching motor skills, but the ideal presentation frequency for KP in adolescents is unclear. The aim of this study was to compare the effectiveness of the frequency of KP (i.e., 100%, 67%, 0%) on dynamic balance. Thirty adolescents, age 14–15 years, participated in the study. Performance on a stabilometer platform was used to assess dynamic balance. Participants received feedback after each trial (100%), in two out of three trials (67%), or no feedback during 12 30-s trials of practice. Adolescents who received feedback (67% or 100%) required lower mean velocity to maintain similar dynamic balance performance (i.e., root mean square). Moreover, adolescents receiving 100% feedback had a higher α-scaling than those who did not received it. During the post-test and the retention, both 67% and 100% KP frequencies were effective at improving postural control, compared to the no feedback control.

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Retraction: Test‐Retest Reliability of Dynamic Balance Performance‐Based Measures Among Adults With a Unilateral Lower‐Limb Amputation

PM&R ◽

10.1002/pmrj.12233 ◽

2019 ◽

Vol 11 (9) ◽

pp. 1036-1036

Keyword(s):

Lower Limb ◽

Dynamic Balance ◽

Lower Limb Amputation ◽

Limb Amputation ◽

Balance Performance ◽

Retest Reliability ◽

Test Retest Reliability

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The TNF-α-308G/A Polymorphism is Not Associated with Ocular Chlamydia trachomatis Infection in Han Chinese Children

Ophthalmic Genetics ◽

10.3109/13816810.2015.1028650 ◽

2016 ◽

Vol 37 (2) ◽

pp. 245-247

Author(s):

Wenwen Xue ◽

Qingzhong Wang ◽

Zhiqiang Li ◽

Lina Lu ◽

Jianfeng Zhu ◽

...

Keyword(s):

Chlamydia Trachomatis ◽

Han Chinese ◽

Chinese Children ◽

Chlamydia Trachomatis Infection ◽

Tnf Α

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A Dynamic Balance Measure for Persons with Severe and Profound Mental Retardation

Perceptual and Motor Skills ◽

10.2466/pms.1993.76.2.619 ◽

1993 ◽

Vol 76 (2) ◽

pp. 619-627 ◽

Cited By ~ 8

Author(s):

James L. DePaepe ◽

Sue Ciccaglione

Keyword(s):

Mental Retardation ◽

Concurrent Validity ◽

Multivariate Analyses ◽

Dynamic Balance ◽

Reliability And Validity ◽

Balance Performance ◽

Age And Gender ◽

Pearson Product Moment Correlation ◽

Significant Difference ◽

And Gender

The present study's purpose was to probe into the reliability and validity measurement of dynamic balance for individuals with IQs below 29. The 91 subjects were asked to complete the Papcsy-DePaepe test and the Bruininks test according to each test's protocol. Correlations of odd-even scores produced a reliability of .98 for the Papcsy-DePaepe test. Concurrent validity was indicated by a Pearson product-moment correlation of .64 between the two tests. Subsequent 3 × 2 × 2 multivariate analyses of variance confirmed a significant difference between the two tests and that retardation was associated with balance performance although age and gender were not.

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