Investigation of the Validity of Visual Assessment of Center of Gravity in the Analysis of Posture and Movement

DOI 6 Citations 6 References

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  • 姿勢・動作分析における身体重心点の視覚的評価の検討

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Though it is important to know/comprehend the center of gravity position in posture and movement, the center of gravity position, which is actually invisible, is estimated on the basis of experiments in many cases. Since the center of gravity is the center of the weight of each body part, we speculated that the midpoint of the centers of gravity of both upper body and lower body, which can be roughly observed, approximates the center of gravity. In this study, we divided the body into upper body and lower body and defined the midpoint of the centers of gravity calculated from each of the divided body parts as the observational center of gravity. The difference between the observational center of gravity and the center of gravity position obtained from a three dimensional movement analysis system was investigated for posture and movement in the frontal and sagittal planes. The result shows that the center of gravity approximated the midpoint of the centers of gravity of both the upper body and lower body, suggesting their usefulness as clinical observation points.

Journal

  • Physical Therapy Japan

    Physical Therapy Japan 33 (3), 112-117, 2006-06-20

    Japanese Society of Physical Therapy

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