וְדָוִ֛ד מְכַרְכֵּ֥ר בְּכָל־עֹ֖ז לִפְנֵ֣י יְהוָ֑ה וְדָוִ֕ד חָג֖וּר אֵפ֥וֹד בָּֽד׃
And David danced before the LORD with all his might; and David was girded with a linen ephod.
Malbim on II Samuel
AND DAVID sacrificed his own honor for the honor of Hashem in three ways:
Radak on II Samuel
"And David danced before HaShem with all his might" - Danced with all his strength and concentration. And its targum is "praised."