Relaxation-induced cortisol changes within lunch breaks – an experimental longitudinal worksite field study
Jarek Krajewski,
Martin Sauerland,
Rainer Wieland,
Corresponding Author
Jarek Krajewski
Experimental Work Psychology, University of Wuppertal, Germany
Correspondence should be addressed to Dr Jarek Krajewski, Experimental Business Psychology, Schumpeter School of Business and Economics, University of Wuppertal (Germany), Gaussstraße 20, 42097 Wuppertal, Germany (e-mail: [email protected]).Search for more papers by this authorMartin Sauerland
Work and Social Psychology, University of Landau, Germany
Search for more papers by this authorRainer Wieland
Work and Organizational Psychology, University of Wuppertal, Germany
Search for more papers by this authorJarek Krajewski,
Martin Sauerland,
Rainer Wieland,
Corresponding Author
Jarek Krajewski
Experimental Work Psychology, University of Wuppertal, Germany
Correspondence should be addressed to Dr Jarek Krajewski, Experimental Business Psychology, Schumpeter School of Business and Economics, University of Wuppertal (Germany), Gaussstraße 20, 42097 Wuppertal, Germany (e-mail: [email protected]).Search for more papers by this authorMartin Sauerland
Work and Social Psychology, University of Landau, Germany
Search for more papers by this authorRainer Wieland
Work and Organizational Psychology, University of Wuppertal, Germany
Search for more papers by this authorAbstract
The aim of the worksite study presented here is to elucidate the cortisol reducing impact of different ways of spending lunch breaks. With the help of the so-called silent room cabin concept it was possible to induce a relaxation opportunity that provides visual and territorial privacy. In order to evaluate its proposed effects, 14 call centre agents were distributed to either 20 min progressive muscle relaxation (PMR) or small talk break group. Participants were analysed in a controlled trial for a period of 6 months (1 day each month with five daily measurements at awakening, awakening +30 min, start of lunch break, end of lunch break, and bedtime) using saliva cortisol measurements as a stress indicator. Results indicated that only the PMR break reduced awakening, lunchtime, and bedtime cortisol response. Although further intervention research is required, our results suggest that post-lunch PMR may sustainably reduce participants' cortisol states in real worksite settings.
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