Publications by authors named "Yumi Okayama"

Article Synopsis
  • The study aimed to examine how factors like muscle and fat tissue, joint mobility, and muscle strength influence the ability to perform deep squats among 18 healthy university students.
  • Measurements included physical characteristics, body composition, and range of motion, followed by muscle strength and activity assessments during deep squatting.
  • Results indicated that those who could perform deep squats had lower body weight and muscle activity, as well as better hip and ankle flexibility, suggesting that both soft tissue characteristics and joint mobility are important for deep squatting ability.
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Background: Mediated by balance systems, postural control relies heavily on visual input. However, the precise relationship between various visual conditions and postural strategies for balance remains unclear. This study investigated alterations in the center of pressure (COP) and ankle muscle activity during standing positions in healthy individuals under different visual conditions.

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The 'StretchPole' foam roller product is mainly used to loosen muscle groups and joints in the deeper layers of the body that are normally inaccessible to the human hand, and to realign the skeletal structure by lying on the pole and performing exercises. It is also used to strengthen the core, which plays an important role in postural maintenance and stability. The purpose of this study was to determine the effects of the 'Solacon' exercise routine using a StretchPole on shoulder joint range of motion.

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This article describes the intervention for improvement of the limitation of range of ankle dorsiflexion. The limitation of range of ankle dorsiflexion has close relation to an ankle motion axis displacement. And its displacement is related to a shortening of the soft tissue around ankle joint at typical parts.

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