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Transient effects of jumping lunge on sand on balance ability in healthy adults: a preliminary study
Phys Ther Rehabil Sci 2018;7:172-8
Published online December 30, 2018
© 2018 Korean Academy of Physical Therapy Rehabilitation Science.

Min-hyeok Choia,†, Ho-jin Shina,†, Suk-Chan Hahmb, Min-Goo Leec,* , and Hwi-young Chod,*

aDepartment of Health Science, Gachon University Graduate School, Incheon, Republic of Korea
bGraduate School of Integrative Medicine, CHA University, Seongnam, Republic of Korea
cDepartment of Physiology, Korea University College of Medicine, Seoul, Republic of Korea
dDepartment of Physical Therapy, College of Health Science, Gachon University, Incheon, Republic of Korea
Correspondence to: Min-Goo Lee (ORCID https://orcid.org/0000-0003-2822-4973)
Department of Physiology, Korea University College of Medicine, 73 Inchon-ro, Seongbuk-gu, Seoul 02841, Republic of Korea
Tel: 82-2-2286-1194 Fax: 82-2-925-5492 E-mail: mingoolee@korea.ac.kr
Hwi-young Cho (ORCID https://orcid.org/0000-0003-0465-9665)
Department of Physical Therapy, College of Health Science, Gachon University, 191 Hambangmoe-ro, Yeonsu-gu, Incheon 21936, Republic of Korea
Tel: 82-32-820-4560 Fax: 82-32-820-4420 E-mail: hwiyoung@gachon.ac.kr
*These authors contributed equally to this work as corresponding authors.
These two authors contributed equally to this work as co-first author.
Received November 13, 2018; Revised December 12, 2018; Accepted December 13, 2018.
cc This is an Open-Access article distributed under the terms of the Creative Commons Attribution Non-Commercial License (http://creativecommons.org/licenses/by-nc/4.0) which permits unrestricted non-commercial use, distribution, and reproduction in any medium, provided the original work is properly cited.
Abstract
Objective: The purpose of this study was to show the temporary effects of performing jumping lunges on a sand surface on static balance and dynamic balance.
Design: Randomized controlled trial.
Methods: Twenty healthy subjects volunteered in the study and was randomly assigned into either the sand group (n=10) or the control group (n=10). The subjects in the sand group performed jumping lunges on a sand surface and the subjects in the control group performed jumping lunges on a firm surface. The intervention was performed for 3 sets of 8 repetitions by both groups. To measure static balance, the force plate was employed to measure the center of pressure (CoP) area, and the CoP velocity during one-legged standing. Anterior, postero-medial, postero-lateral movements was assessed using the Star Excursion Balance Test (SEBT) to measure dynamic balance.
Results: After the intervention, the sand group showed statistically significant improvements on all variables (CoP area, CoP velocity) in static balance (p<0.05). There were statistically significant changes in CoP area and CoP velocities between the two groups (p<0.05). In the sand group, there were significant improvements in the postero-medial and postero-lateral directions (p<0.05) except for anterior direction on dynamic balance. In the control group, there was a significant improvement in the postero-lateral and anterior directions (p<0.05). In comparison of the two groups, there was no statistically significant improvement in all variables.
Conclusions: This study demonstrated that performing jumping lunges on a sand surface was effective in improving static and dynamic balance temporarily.
Keywords : Plyometric exercise, Postural balance, Young adult

 

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