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Effect of an aerobic exercise intervention on cardiac autonomic regulation: A worksite RCT among cleaners
Högskolan i Gävle, Akademin för hälsa och arbetsliv, Avdelningen för arbets- och folkhälsovetenskap, Arbetshälsovetenskap. Högskolan i Gävle, Centrum för belastningsskadeforskning.ORCID-id: 0000-0002-2741-1868
National Research Centre for the Working Environment, Copenhagen, Denmark.
Institute of Sports Science and Clinical Biomechanics, University of Southern Denmark, Odense, Denmark.
Department of Nutrition, Exercise and Sports, Copenhagen Centre for Team Sport and Health, University of Copenhagen, Copenhagen, Denmark.
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2017 (Engelska)Ingår i: Physiology and Behavior, ISSN 0031-9384, E-ISSN 1873-507X, Vol. 169, s. 90-97Artikel i tidskrift (Refereegranskat) Published
Abstract [en]

Objective

The aim of this randomized controlled trial (RCT) was to determine whether aerobic exercise during work hours affects cardiac autonomic regulation in cleaners characterized by high levels of occupational physical activity and poor cardiorespiratory fitness.

Method

Eligible cleaners (n=116) were randomized to an aerobic exercise group (n=59) or a reference group (n=57) with lectures. The intervention group received two 30-min sessions per week of supervised aerobic exercise over 4 months. Diurnal measurements of heart rate variability (HRV) and physical activity (accelerometry) were obtained at baseline and at 4-month follow-up. Time and frequency domain indices of HRV were derived during work, leisure time and sleep to evaluate cardiac autonomic regulation. Linear mixed models were used to determine the effect of the intervention on HRV indices, with adjustment for age, gender and daily use of antihypertensive and/or heart medication.

Results

Compared with the reference group, the exercise group increased all HRV indices apart from a reduction in LF/HF ratio from baseline to follow-up both during work (p<0.05) and leisure (p<0.05). In contrast, during sleep, the HRV indices tended to decrease in the exercise group compared with the reference group from baseline to follow-up, being significant for the HF spectral component (p=0.03).

Conclusion

Among cleaners, a worksite aerobic exercise intervention improved cardiac autonomic regulation during work and leisure, but not during sleep. The health effect of this contrasting change in autonomic regulation needs further investigation.

Ort, förlag, år, upplaga, sidor
2017. Vol. 169, s. 90-97
Nyckelord [en]
Autonomic, Cardiovascular, Objective measurements, Occupational health, Parasympathetic, Physical activity, Randomized controlled trial
Nationell ämneskategori
Arbetsmedicin och miljömedicin
Identifikatorer
URN: urn:nbn:se:hig:diva-21984DOI: 10.1016/j.physbeh.2016.11.031ISI: 000392774100013PubMedID: 27889332Scopus ID: 2-s2.0-84999791383OAI: oai:DiVA.org:hig-21984DiVA, id: diva2:943734
Tillgänglig från: 2016-06-28 Skapad: 2016-06-28 Senast uppdaterad: 2018-03-13Bibliografiskt granskad

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Hallman, David

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