Table 2. Interventional procedures.

LEX: Leg exercise apparatus

Day	Procedure
Pre LEX	Informed consent
	D-dimer
	Ultrasonography
	Practice exercise using LEX
The first day of LEX (before LEX)	Blood pressure, pulse rate, and percentage saturation of oxygen
	Modified Borg scale
The first day of LEX  (after LEX)	Blood pressure, pulse rate, and percentage saturation of oxygen
	Modified Borg scale
LEX period	Exercise using LEX three times per day
Before the last day of LEX	D-dimer
	Ultrasonography
The last day of LEX (before LEX)	Blood pressure, pulse rate, and percentage saturation of oxygen
	Modified Borg scale
The last day of LEX (after LEX)	Blood pressure, pulse rate, and percentage saturation of oxygen
	Modified Borg scale