Intrinsic foot muscle hardness is related to dynamic postural stability after landing in healthy young men

2021 ◽  
Vol 86 ◽  
pp. 192-198 ◽  
Author(s):  
Noriaki Maeda ◽  
Arisu Hirota ◽  
Makoto Komiya ◽  
Masanori Morikawa ◽  
Rami Mizuta ◽  
...  
2021 ◽  
pp. 1-8
Author(s):  
Junpei Sasadai ◽  
Noriaki Maeda ◽  
Shogo Sakai ◽  
Tsubasa Tashiro ◽  
Hitoshi Arima ◽  
...  

BACKGROUND: The effects of a long-term static stretching program on physical performance parameters have not been elucidated completely, although the effects on muscle flexibility have a consensus. OBJECTIVE: This study aimed to investigate the effect of a long-term static stretching program on physical performance and muscle properties. METHODS: Participants performed a 2-min static stretching for the ankle joint 5 times per week for 4 weeks. Physical performance and muscle properties was measured before and after the static stretching program. RESULTS: Results showed that range of motion (ROM), dynamic postural stability, and muscle hardness were positively changed, whereas other variables i.e. maximal isometric plantar flexion moment, jump heights, muscle-tendon junction displacement and its angle, were not. CONCLUSIONS: Four-week of SS program may improve ROM, dynamic postural stability, and muscle hardness without decreasing physical performance.


Author(s):  
Dragan Marinkovic ◽  
Aleksandra Belic ◽  
Ana Marijanac ◽  
Ellis Martin-Wylie ◽  
Dejan Madic ◽  
...  

2008 ◽  
Vol 11 (2) ◽  
pp. 106-111 ◽  
Author(s):  
Erik A. Wikstrom ◽  
Mark D. Tillman ◽  
Scott M. Schenker ◽  
Paul A. Borsa

2003 ◽  
Vol 8 (3) ◽  
pp. 37-39 ◽  
Author(s):  
Thomas W. Kaminski ◽  
Scott E. Ross ◽  
Kevin M. Guskiewicz

2017 ◽  
Vol 53 ◽  
pp. 5-10 ◽  
Author(s):  
Digna de Kam ◽  
Jip. F. Kamphuis ◽  
Vivian Weerdesteyn ◽  
Alexander C.H. Geurts

Author(s):  
Ke’La Porter ◽  
Carolina Quintana ◽  
Nathan Morelli ◽  
Nicholas Heebner ◽  
Joshua Winters ◽  
...  

2020 ◽  
Vol 29 (2) ◽  
pp. 174-178
Author(s):  
Kelly M. Meiners ◽  
Janice K. Loudon

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.


2020 ◽  
Vol 29 (1) ◽  
pp. 51-64
Author(s):  
Anis Rostami ◽  
Amir Letafatkar ◽  
Alli Gokeler ◽  
Mehdi Khaleghi Tazji

Context: Female volleyball players are more predisposed to anterior cruciate ligament injury in comparison with their male counterparts. Recent research on anterior cruciate ligament injury prevention strategies has shown the positive results of adopting the external focus (EF) of attention in sports. Objective: To determine the effect of 6-week EF instruction exercises on performance and kinetic factors associated with lower-extremity injury in landing after the volleyball blocks of female athletes. Design: Pretest and posttest control study. Setting: University research laboratory. Participants: Thirty-two female volleyball players (18–24 y old) from the same team randomly divided into experimental (n = 16) and control (n = 16) groups. Intervention: The experimental group performed a 6-week exercise program with EF instructions. The control group continued its regular volleyball team schedule. Main Outcome Measures: To assess function, single-leg triple hop test for distance was used. A force plate was used to evaluate kinetic variables including vertical ground reaction forces, the rate of loading, and dynamic postural stability index. All data were assessed at baseline and after the intervention. Results: There was a significant increase in single-leg triple hop test (P < .05) and in the first and second peak ground reaction force, rate of loadings, dynamic postural stability index (P < .05). Conclusion: According to the results of this study, anterior cruciate ligament injury prevention programs should incorporate EF instruction exercises to enhance the kinetics and to increase athletes’ functional performance.


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