American Journal of Sports Science and Medicine
ISSN (Print): 2333-4592 ISSN (Online): 2333-4606 Website: http://www.sciepub.com/journal/ajssm Editor-in-chief: Ratko Pavlović
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American Journal of Sports Science and Medicine. 2021, 9(1), 8-12
DOI: 10.12691/ajssm-9-1-3
Open AccessArticle

Effects of Lower Limbs Exercise with Light and Heavy Loads on the Center of Gravity Sway

Kenji Takahashi1, Shin-ichi Demura2 and Hiroki Aoki3,

1Department of International Tourism, Faculty of Human and Social Studies, Nagasaki International University, Nagasaki Japan

2Kanazawa University, Ishikawa Japan

3National Institute of Technology, Fukui College, Fukui Japan

Pub. Date: July 15, 2021

Cite this paper:
Kenji Takahashi, Shin-ichi Demura and Hiroki Aoki. Effects of Lower Limbs Exercise with Light and Heavy Loads on the Center of Gravity Sway. American Journal of Sports Science and Medicine. 2021; 9(1):8-12. doi: 10.12691/ajssm-9-1-3

Abstract

Background: Fatigue to the lower limbs due to exercise load affects the center of gravity sway (COGS) during standing, and the greater the load, the greater the COGS. Research Question: Do different exercise loads to the lower limbs have an effect on the COGS and does sitting/resting promote recovery after exercise. Methods: The subjects were 30 healthy young men. The COGS after light and heavy load exercises was compared after a 3-min sitting/resting period before and after the load exercises. For each test, the COGS was measured for 30 s. Bicycle pedaling for 30 s with loads of 1% (light load) and 7.5% (heavy load) of body weight was selected as the load exercise for the lower limbs. The x-axis and y-axis trajectory lengths, total trajectory length, outer peripheral area, and rectangular area were selected as variables affecting the COGS. Results: Repeated measures analysis of variance clarified that of all variables, COGS after heavy load exercises was significantly greater than that after light load exercises and during standing after sitting/resting. However, there was no significant difference in COGS after light load exercise and during standing. Significance: The COGS after heavy load exercise was greater than that after light load exercise. The light load exercise used in this study had no effect on COGS in young men. Even after heavy load exercise, the COGS recovered after a 3-min sitting/resting period.

Keywords:
recovery effect pedaling exercise fatigue of the lower limb trajectory lengths young men

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