Comparison of Trunk Muscle Activities and Spinal Curvature when Sitting on a Kneeling Chair and Sitting on a Conventional Chair  -Investigation of Two Sitting Postures-

SUZUKI Tetsu, HIRATA Junya, OHTSUKI Keisuke, WATANABE Susumu

doi:10.1589/rika.26.263

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Other Title

膝当てを取り付けた前傾座面椅子と従来の椅子間における座位時の体幹筋活動と脊椎カーブの比較　　‐２種類の座位姿勢からの検討‐
膝当てを取り付けた前傾座面椅子と従来の椅子間における座位時の体幹筋活動と脊椎カーブの比較--2種類の座位姿勢からの検討
ヒザアテオトリツケタゼンケイザメンイストジュウライノイスカンニオケルザイジノタイカンキンカツドウトセキツイカーブノヒカク 2シュルイノザイシセイカラノケントウ
-Investigation of Two Sitting Postures-
―2種類の座位姿勢からの検討―

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[Purpose] To compare spinal curvature and trunk muscle activity during slump sitting and upright sitting between a kneeling chair and a conventional chair. [Subjects] The subjects were 10 healthy adult women (25.7 ± 4.9 years). [Methods] Trunk muscle activity and spinal curvature were measured with the subjects maintaining slump sitting and upright sitting postures on the conventional and kneeling chairs. [Results] Subjects had a significantly more lordotic spinal curvature when maintaining a slump sitting posture on a kneeling chair than on a conventional chair. In addition, they had significantly lower trunk muscle activity when maintaining a upright sitting posture on a kneeling chair than on a conventional chair. [Conclusion] These results suggest that, compared to a conventional chair, the use of a kneeling chair enables a more efficient upright sitting posture with lower trunk muscle activity, as well as a more efficient slump sitting posture with a smaller reduction in lordosis of the lumbar spine.<br>

Journal

Rigakuryoho Kagaku

Rigakuryoho Kagaku 26 (2), 263-267, 2011

The Society of Physical Therapy Science

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Comparison of Trunk Muscle Activities and Spinal Curvature when Sitting on a Kneeling Chair and Sitting on a Conventional Chair -Investigation of Two Sitting Postures-