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Cancer Causes Control. 2017 Apr;28(4):309-318. doi: 10.1007/s10552-017-0872-4. Epub 2017 Feb 28.

Physical activity and lung cancer risk in men and women.

Author information

1
Department of Social and Preventive Medicine and CRCHUM (Centre de recherche du CHUM), Université de Montréal, 850 Saint-Denis Street, Montréal, QC, Canada.
2
INRS (Institut Armand-Frappier Research Center), Laval, QC, Canada.
3
CRCHUM (Centre de recherche du CHUM), Montréal, QC, Canada.
4
Department of Epidemiology, Biostatistics and Occupational Health, McGill University, Montréal, QC, Canada.
5
Department of Social and Preventive Medicine and CRCHUM (Centre de recherche du CHUM), Université de Montréal, 850 Saint-Denis Street, Montréal, QC, Canada. anita.koushik@umontreal.ca.

Abstract

PURPOSE:

Although evidence has accumulated that recreational physical activities (PA) may reduce lung cancer risk, there is little evidence concerning the possible role of a potentially more important source of PA, namely occupational PA. We investigated both recreational and lifetime occupational PA in relation to lung cancer risk in a population-based case-control study in Montreal, Canada (NCASES = 727; NCONTROLS = 1,351).

METHODS:

Unconditional logistic regression was used to estimate odds ratios (OR), separately for men and women, adjusting for smoking, exposure to occupational carcinogens, and sociodemographic and lifestyle factors.

RESULTS:

In both sexes, increasing recreational PA was associated with a lower lung cancer risk (ORMEN = 0.66, 95% confidence interval (CI) 0.47-0.92; ORWOMEN = 0.55, 95% CI 0.34-0.88, comparing the highest versus lowest tertiles). For occupational PA, no association was observed among women, while increasing occupational PA was associated with increased risk among men (ORMEN = 1.96, 95% CI 1.27-3.01). ORs were not modified by occupational lung carcinogen exposure, body mass index, and smoking level; results were similar across lung cancer histological types.

CONCLUSIONS:

Our results support the previous findings for recreational PA and lung cancer risk. Unexpectedly, our findings suggest a positive association for occupational PA; this requires replication and more detailed investigation.

KEYWORDS:

Case–control studies; Exercise; Histology; Lung neoplasms; Motor activity; Occupation; Recreation

PMID:
28247218
DOI:
10.1007/s10552-017-0872-4
[Indexed for MEDLINE]

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