Exhibit 4-46. Manual entry fields disabled The fields for manual entry of heart rate are disabled after Recovery 2 is completed.
At this point, the VO 2 max is calculated and the ISIS system will not allow a change
to be made to the heart rate.
End of Stage 1:
After 3 minutes in Stage 1 the ISIS system will advance to Stage 2. The treadmill
controller will automatically increase the speed and grade of the treadmill. The timer
will be reset to zero and will start timing the 3-minute Stage 2.