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Occupational Medicine Advance Access published online on October 4, 2009
Occupational Medicine, doi:10.1093/occmed/kqp141
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© The Author 2009. Published by Oxford University Press on behalf of the Society of Occupational Medicine. All rights reserved. For Permissions, please email: journals.permissions@oxfordjournals.org

High job control enhances vagal recovery in media work

Harri Lindholm1, Juha Sinisalo2, Jari Ahlberg3, Antti Jahkola1, Markku Partinen4, Christer Hublin5 and Aslak Savolainen6

1 Centre of Expertise for Health and Work Ability, Finnish Institute of Occupational Health, Topeliuksenkatu 41 A, 00250 Helsinki, Finland
2 Department of Cardiology, Helsinki University Central Hospital, Haartmaninkatu 4, 00290 Helsinki, Finland
3 Institute of Dentistry, University of Helsinki, POB 41, 00014 Helsinki, Finland
4 Skogby Sleep Clinic, Rinnekoti Research Center, Rinnekodintie 10, 02989 Espoo, Finland
5 Centre of Expertise for Human Factors at Work, Finnish Institute of Occupational Health, Topeliuksenkatu 41 A, 00250 Helsinki, Finland
6 Finnish Broadcasting Company, POB 80, 00024 YLE, Helsinki, Finland

Background Job strain has been linked to increased risk of cardiovascular diseases. In modern media work, time pressures, rapidly changing situations, computer work and irregular working hours are common. Heart rate variability (HRV) has been widely used to monitor sympathovagal balance. Autonomic imbalance may play an additive role in the development of cardiovascular diseases.

Aims To study the effects of work demands and job control on the autonomic nervous system recovery among the media personnel.

Methods From the cross-sectional postal survey of the employees in Finnish Broadcasting Company (n = 874), three age cohorts (n = 132) were randomly selected for an analysis of HRV in 24 h electrocardiography recordings.

Results In the middle-aged group, those who experienced high job control had significantly better vagal recovery than those with low or moderate control (P < 0.01). Among young and ageing employees, job control did not associate with autonomic recovery.

Conclusions High job control over work rather than low demands seemed to enhance autonomic recovery in middle-aged media workers. This was independent of poor health habits such as smoking, physical inactivity or alcohol consumption.

Keywords      Autonomic nervous system; media work; recovery

Correspondence to: Juha Sinisalo, Department of Cardiology, Helsinki University Central Hosptial, Haartmaninkatu 4, 00290 Helsinki, Finland. Tel: +35 8504279007; fax +35 8947174574; e-mail: juha.sinisalo{at}hus.fi


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