Korean J Fam Pract. 2018; 8(6): 951-956  https://doi.org/10.21215/kjfp.2018.8.6.951
Correlations between Amount of Physical Activity on Working Time and Blood Cholesterol Level
Junho Choi, Yoonju Jo, Duk-Chul Lee*
Department of Family Medicine, Severance Hospital, Yonsei University College of Medicine, Seoul, Korea
Duk-Chul Lee
Tel: +82-2-2228-5950, Fax: +82-2-2228-5760
E-mail: faith@yuhs.ac
ORCID: http://orcid.org/0000-0001-9166-1813
Received: August 23, 2017; Accepted: September 6, 2017; Published online: December 20, 2018.
© The Korean Academy of Family Medicine. All rights reserved.

This is an open-access article distributed under the terms of the Creative Commons Attribution Non-Commercial License (http://creativecommons.org/licenses/by-nc/4.0) which permits unrestricted noncommercial use, distribution, and reproduction in any medium, provided the original work is properly cited.
Background: Previous studies have compared and analyzed various aspects of the correlation between physical activity and dyslipidemia, but few studies compared these two using a more detailed classification of the study population. Therefore, in our study, we compared the correlation between physical activity and dyslipidemia among a more specific group of manual laborers.
Methods: This study was based on data of 2015 Korean manual laborers obtained from the Sixth Korea National Health and Nutrition Examination Survey (2013?2015), from which, data from 2014 to 2015 was considered. Based on results from the surveys and blood tests, the correlation between the amount of physical activity and blood lipid profile was examined with logistic regression analysis after adjusting for confounders.
Results: Physical activity with moderate intensity during labor had a positive effect on total cholesterol and high-density lipoprotein levels when the activity exceeded a certain duration, and any physical activity less than this duration showed no relation with dyslipidemia. In particular, physical activity during manual labor resulted in a statistically insignificant correlation with low-density lipoprotein and triglyceride levels.
Conclusion: This study found that physical activity performed during manual labor alone was not able to improve all blood lipid levels in physical workers.
Keywords: Dyslipidemias; Cholesterol; Physical Acitivity; Physical Acitivity Intensity
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