並列タイトル等キン ソンショウゴ ノ キン コウド ト elastographyホウ ニ ヨル キン ダンセイ トクセイ ノ カンケイ
Kin sonshogo no kin kodo to elastographyho ni yoru kin dansei tokusei no kankei
The relationship between muscle hardness and muscle elastic property by elastography after muscle damage
一般注記type:text
本研究は押圧式筋硬度計(Push-in Meter : PM)とReal-time Tissue Elastography(RTE)の筋硬度評価の関係性について, 安静時, 筋収縮時, eccentric運動による筋損傷誘発前後について検討した。PMとRTEの相関関係は安静時でR2=0.47, 筋収縮時でR2=0.83であった。eccentric運動後はPMとRTEともに肘関節強制伸展位で筋硬度増加を観察したが, RTEは非伸展位とconcentric運動側でも筋硬度の増加を示した。PMとRTEは筋収縮・伸展時のようにstiffnessが高まる条件では対応するものの, 同一ではないことが明らかとなった。
The aim of this study is to examine the relationships between real-time tissue elastography (RTE) and push-in meter (PM) for assessment of muscle hardness (MH) of resting, contracting and damaging muscle of the upper arm. The relationship between pressure force and the displacement of a muscle was recorded by PM and MH value "E" was calculated using the slope of the force-displacement relationship. The elastograph image was recorded by RTE and strain ratio (SR) in region of interest was calculated for each image. The correlation coefficients between SR and E in resting and contracting were significant (resting : R2=0.47 ; contracting : R2=0.83), but the correlation in resting was not strong. After inducing muscle damage, E measured at forcibly extended elbow position increased, although no significant changes at relaxed elbow position were evident. However, RTE showed an increase in MH both elbow positions. It is concluded that MH assessed by RTE is different from that by PM.
研究種目 : 基盤研究(C)(一般)
研究期間 : 2013～2015
課題番号 : 25350822
研究分野 : 運動生理学
連携機関・データベース国立情報学研究所 : 学術機関リポジトリデータベース（IRDB）（機関リポジトリ）