Aerobic exercise reduces biomarkers related to cardiovascular risk among cleaners: effects of a worksite intervention RCT
Research output: Contribution to journal › Journal article › Research › peer-review
- Korshøj et al_Int Arch Occup Environ Health_2016_Vol 89(2)_239-249
Final published version, 469 KB, PDF document
Mette Korshøj, Marie Højbjerg Ravn, Andreas Holtermann, Åse Marie Hansen, Peter Krustrup
PURPOSE: Blue-collar workers have an increased risk of cardiovascular disease. Accordingly, elevated levels of biomarkers related to risk of cardiovascular disease, such as high-sensitive C-reactive protein, have been observed among blue-collar workers. The objective was to examine whether an aerobic exercise worksite intervention changes the level of inflammation biomarkers among cleaners.
METHODS: The design was a cluster-randomized controlled trial with 4-month worksite intervention. Before the 116 cleaners aged 18-65 years were randomized, they signed an informed consent form. The reference group (n = 59) received lectures, and the aerobic exercise group (n = 57) performed worksite aerobic exercise (30 min twice a week). Levels of biomarkers (high-sensitive C-reactive protein, fibrinogen, cholesterol, low- and high-density lipoprotein cholesterol and triglyceride) were collected at baseline and after 4 months. A repeated-measure, multi-adjusted, mixed-model intention-to-treat analysis was applied to compare between-group differences. The study was registered as ISRCTN86682076.
RESULTS: Significant (p < 0.05) between-group reductions from baseline to follow-up were found for high-sensitive C-reactive protein (-0.54 ± 0.20 µg/ml; 95 % CI -0.94, -0.14), low-density lipoprotein cholesterol (-0.32 ± 0.11 mmol/L; 95 % CI -0.54, -0.10) and the ratios of LDL/HDL (-0.30 ± 0.08; 95 % CI -0.46, -0.14), and LDL/TC cholesterol (-0.04 ± 0.02; 95 % CI -0.07, -0.01).
CONCLUSION: This study indicates that an aerobic exercise intervention among cleaners leads to reduced levels of high-sensitive C-reactive protein and low-density lipoprotein cholesterol, and an unaltered level of fibrinogen. The aerobic exercise seems to improve inflammatory levels and lipoprotein profile among cleaners, with no signs of cardiovascular overload.
|Journal||International Archives of Occupational and Environmental Health|
|Number of pages||11|
|Publication status||Published - 2016|
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