Perfenia Paul Pletnikoff1, Tomi-Pekka Tuomainen1, Jari A Laukkanen2, Jussi Kauhanen1, Rainer Rauramaa3, Kimmo Ronkainen1, Sudhir Kurl4. 1. Institute of Public Health and Clinical Nutrition, University of Eastern Finland, Kuopio, Finland. 2. Institute of Public Health and Clinical Nutrition, University of Eastern Finland, Kuopio, Finland; Lapland Central Hospital, Department of Internal Medicine, Rovaniemi, Finland. 3. Kuopio Research Institute of Exercise Medicine, Kuopio, Finland. 4. Institute of Public Health and Clinical Nutrition, University of Eastern Finland, Kuopio, Finland. Electronic address: sudhir.kurl@uef.fi.
Abstract
OBJECTIVES: Little is known about the role of cardiorespiratory fitness (CRF) and leisure-time physical activity (LTPA) with the risk of lung cancer. Previous research shows that maintaining a sufficient amount of physical activity may have a protective effect against cancer. The aim of this study is to examine the associations of CRF, LTPA and lung cancer among middle-aged Finnish men. DESIGN: Prospective cohort study. METHODS: In a population-based cohort study of 2305 men from Eastern Finland with no history of cancer at baseline. CRF and LTPA data was collected at baseline, 73 cases of lung cancer occurred during an average follow-up of 20-years. RESULTS: In a multivariate adjusted model, every 3.8mL/kg/min (1 SD) increase of CRF was related to a 31% decrease in lung cancer risk across all VO2max quartiles. Furthermore, a 2.8-fold (95% CI 1.14-7.22, p=0.024) increased risk of lung cancer among men in the lowest quartile (≤20.3mL/kg/min) of CRF as compared those in the highest quartile (>35.1mL/kg/min). In a multivariate adjusted model LTPA was not associated to lung cancer. CONCLUSIONS: In middle-aged men with no history of lung cancer, increasing levels of CRF serves as a protective factor against lung cancer. Increasing CRF may reduce the risk of lung cancer. Furthermore, CRF is a better predictor of lung cancer than LTPA.
OBJECTIVES: Little is known about the role of cardiorespiratory fitness (CRF) and leisure-time physical activity (LTPA) with the risk of lung cancer. Previous research shows that maintaining a sufficient amount of physical activity may have a protective effect against cancer. The aim of this study is to examine the associations of CRF, LTPA and lung cancer among middle-aged Finnish men. DESIGN: Prospective cohort study. METHODS: In a population-based cohort study of 2305 men from Eastern Finland with no history of cancer at baseline. CRF and LTPA data was collected at baseline, 73 cases of lung cancer occurred during an average follow-up of 20-years. RESULTS: In a multivariate adjusted model, every 3.8mL/kg/min (1 SD) increase of CRF was related to a 31% decrease in lung cancer risk across all VO2max quartiles. Furthermore, a 2.8-fold (95% CI 1.14-7.22, p=0.024) increased risk of lung cancer among men in the lowest quartile (≤20.3mL/kg/min) of CRF as compared those in the highest quartile (>35.1mL/kg/min). In a multivariate adjusted model LTPA was not associated to lung cancer. CONCLUSIONS: In middle-aged men with no history of lung cancer, increasing levels of CRF serves as a protective factor against lung cancer. Increasing CRF may reduce the risk of lung cancer. Furthermore, CRF is a better predictor of lung cancer than LTPA.
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