Analysis of vibration transmission between experienced and recreational tennis players during backhand stroking

Chiang, Jinn Yen; Chiang, Cheng-Tsung; Wei, Shun Hwa; Shiang, Tzyy Yuang

doi:10.1016/s0021-9290(06)83634-1

Cited by 1 publication

(2 citation statements)

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“…Changes in postural control were also observed as a result of long-term combat sports training in judo [6], karate [7], taekwondo [8], or wrestling athletes [9]. Generally, elite senior athletes showed superior balance measured in static and dynamic tests in comparison to untrained individuals and junior athletes [10]. On the one hand, elite judokas were characterized by a smaller radius of center of foot pressure (COP) and recovered their balance significantly faster after kicking [10].…”

Section: Open Accessmentioning

confidence: 99%

“…Generally, elite senior athletes showed superior balance measured in static and dynamic tests in comparison to untrained individuals and junior athletes [10]. On the one hand, elite judokas were characterized by a smaller radius of center of foot pressure (COP) and recovered their balance significantly faster after kicking [10]. On the other hand, increased COP displacements were found in static positions in elite adult wrestlers and karateka [9,11].…”

Section: Open Accessmentioning

confidence: 99%

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The effect of expertise on postural control in elite sport ju-jitsu athletes

Akbaş¹,

Marszałek²,

Drozd

et al. 2022

BMC Sports Sci Med Rehabil

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Background Due to the high postural control demands of sport ju-jitsu, it is likely that long-term sport ju-jitsu training may induce sport-specific adaptations in postural control, especially in positions directly related to combat. The aim of the study was to assess the differences in postural control between elite sport ju-jitsu athletes and untrained controls in non-ecological and ecological conditions and to investigate the relative contribution of spinal and supraspinal mechanisms to postural control in expert athletes. Methods The study was conducted on eleven male elite ju-jitsu athletes and ten non-athletes. The data was collected with the use of a force plate under two conditions: quiet standing and ju-jitsu combat stance. Apart from the standard analysis of the spatial–temporal parameters of center of foot pressure, non-linear measures were used, namely rambling-trembling and sample entropy. The non-parametric Mann–Whitney U test was used to compare both groups. Results The main findings of the study showed that in quiet standing, elite ju-jitsu athletes and non-athletes had comparable postural control in both the anterior–posterior and mediolateral planes. In contrast, in the combat stance, elite athletes had lower values of postural sway and rambling component (range and rms) and higher values of sample entropy in comparison to the non-athletes (p < 0.05). No differences were found in the trembling component of sway between groups in the combat stance (p < 0.05). Conclusions Smaller postural sway and its rambling component in sport ju-jitsu athletes may indicate the more precise control of center of foot pressure and improved ability in estimating its position. The sample entropy results confirmed that the displacement of center of foot pressure for sport ju-jitsu athletes was more irregular, which demonstrates greater automatization in postural control. The results also confirm the importance of ecological validity in investigating postural adaptations associated with sports expertise.

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