וְדָוִ֛ד מְכַרְכֵּ֥ר בְּכָל־עֹ֖ז לִפְנֵ֣י יְהוָ֑ה וְדָוִ֕ד חָג֖וּר אֵפ֥וֹד בָּֽד׃
大衛在永恆者面前竭盡全力地跳舞；大衛腰間束著細麻布以弗得。
Radak
"And David danced before HaShem with all his might" - Danced with all his strength and concentration. And its targum is "praised."
Malbim
AND DAVID sacrificed his own honor for the honor of Hashem in three ways:
Rashi
Linen robe. A linen robe, Foursaint in O.F. Yonasan translated, robe as Yonasan also translated "the robes of Tomor, the sister of Avsholom," robes (Further, 13:18)