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Figure 3 :Study 2 shows 24-hour cortisol profiles ascertained in the DN-group before and after four consecutive night shifts. PA1/PA2: phase assessment procedure before (gray) /after (black) four night shifts; DN: subgroup of participants that had just changed after four consecutive night shifts back to their usual day-oriented schedule.

Figure 3 :Study 2 shows 24-hour cortisol profiles ascertained in the DN-group before and after four consecutive night shifts. PA1/PA2: phase assessment procedure before (gray) /after (black) four night shifts; DN: subgroup of participants that had just changed after four consecutive night shifts back to their usual day-oriented schedule.