title: Can morning rise in salivary cortisol be a biological parameter in an occupational rehabilitation clinic? A feasibility study.
abstract: Objective. To test the feasibility of measuring salivary cortisol in an inpatient clinic for occupational rehabilitation, and cortisol as a biological parameter. Methods. In 17 patients in vocational rehabilitation, cortisol in saliva was measured at awakening, 30 min after and before bedtime. The cortisol measures were taken on day 2 and day 22 of the rehabilitation period. Cortisol awakening response was estimated in absolute value and as percent rise of the value at awakening. Results. The cortisol awakening response in absolute value was 6.7 (SD = 4.9) nmol/L on day 2 and 2.7 (SD = 5.6) nmol/L on day 22. The change was not statistically significant. The mean value for cortisol morning rise calculated in percent was 186% on day 2 and 51% on day 22. Conclusion. It is possible to conduct a clinical study including salivary cortisol in a rehabilitation clinic. This study indicates that cortisol morning rise may be a useful biological parameter for effect of intervention in a rehabilitation clinic; this remains to be tested in a larger population.
authors.affiliation: The Occupational Rehabilitation Centre in Rauland (AiR), 3864 Rauland, Norway ; Department for Physical and Rehabilitation Medicine, University Hospital of Northern Norway (UNN), 9038 Tromsø, Norway.
authors.forename: Kari
authors.initials: K
authors.lastname: Storetvedt
authors.affiliation: National Research Center for the Working Environment, Lersø Parkalle 105, 2100 København Ø, Denmark.
authors.forename: Anne Helene
authors.initials: AH
authors.lastname: Garde
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