Table 3.  Details of Rehabilitation Activity Time score.

Feature	Our study
How to calculate the Rehabilitation Activity Time	The definition of the Rehabilitation Activity Time includes all activities aimed at mobilizing patients. All rehabilitation sessions that take place during the day are considered in calculating the total RATs for that duration. The duration (from start to finish) of each actually performed rehabilitation activity was measured to the nearest second using a stopwatch. The time needed to prepare for rehabilitation and rest periods during exercise, assessment, and measurement were excluded from the activity time. Therefore, only the duration of the exercises actually performed was recorded.
Calculation of the daily RATs	In one session, each rehabilitation level achieved will be multiplied by the corresponding exercise unit. The activity time of each rehabilitation session is rounded up. Some examples: ▪ Patients with 10 min of passive range of motion per session, three times a day: 1 × 3 (activity time is rounded up to 20 min per session). ▪ Patients spent 30 min preparing; nevertheless, they performed the active muscle training in bed for only 20 min (activity time was rounded up to 15 min × 2 units).