The Journal of Korean Physical Therapy

The Korean Society of Physical Therapy (대한물리치료학회)
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Effects of Visual Information on Joint Angular Velocity of Trunk and Lower Extremities in Sitting and Squat Motion

  • Bu, Kyoung hee (Graduate School, Silla University) ;
  • Oh, Tae young (Department of Physical Therapy, College of Medical Life Science, Silla University)
  • Received : 2015.03.24
  • Accepted : 2015.04.20
  • Published : 2015.04.25
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Abstract

Purpose: The purpose of this study is to determine the effects of visual information on movement time and each angular velocity of trunk and lower extremity joints while healthy adults are in sitting and squat motion. Methods: Participants consisted of 20 healthy male and female adults; movement time and each angular velocity of trunk, pelvis, hip, knee and ankle of sitting and squat motion according to common vision, visual task and visual block were analyzed using a three dimensional motion analysis system. Results: Each angular velocity of the trunk, pelvis, hip, knee and ankle in phase 2 of the sitting showed significant difference according to the types of visual information (p<0.05). Movement time and each angular velocity of pelvis and hip in phase 2 of squat motion showed significant difference according to the types of visual information (p<0.05). According to the common vision, each angular velocity of knee and ankle in phase 1 was significantly fast in sitting (p<0.05). According to the common vision, each angular velocity of trunk, pelvis, hip, knee, and ankle in phase 2 was significantly fast in sitting (p<0.05). Conclusion: Visual information affects the angular velocity of the motion in a simple action such as sitting, and that in more complicated squat motion affects both the angular velocity and the movement time. In addition, according to the common vision, visual task and visual block, as angular velocities of all joints were faster in sitting than squat motion.

Keywords

References

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