Abstract MP06: Sport Club Participation During Adolescence and Sports-Related Physical Activity During Adulthood in Relation to Mortality From Cardiovascular Disease: The JACC Study
Background and Purpose: Taking part in cultural or sport club activities during Junior and Senior high school years is an integral part of Japanese culture. This study examines potential effects of sport club participation during Junior and Senior High School and sports-related physical activity during adulthood on mortality from cardiovascular disease (CVD).
Methods: Between 1988 and 1990, as part of the Japan Collaborative Cohort (JACC) Study, 29 526 men and 41 044 women aged 40 to 79 years with no history of coronary heart disease (CHD), cerebrovascular disease, or cancer responded to a questionnaire, which included questions regarding the frequency of sports participation at baseline and sport club participation during Junior and Senior high school. A follow-up study was conducted until the end of 2009, and 4230 cardiovascular deaths (870 CHD and 1859 stroke) were identified. Cox proportional-hazard regression model was used to estimate hazard ratios first separately, and then combined for sports participation during Junior and Senior high school, and sports participation during adulthood at baseline. The multivariate model was adjusted for age, sex, BMI, history of hypertension, history of diabetes, smoking status, alcohol intake, hours of sleep, age of completed education, job style, stress, fish intake, and walking time.
Results: Men and women participating in sports activities at baseline for 5 hours or more per week had a 19% lower risk of CVD mortality compared to the reference category of 1 to 2 hours of sports-related physical activity per week. When examined separately, participation in sport clubs during Junior or Senior high school years was not associated with mortality from CVD. The multivariate-adjusted hazard ratios (95% confidence interval) for CHD and CVD were 0.79 (0.58-1.08) and 0.81 (0.71-0.94), respectively, for sports participation at baseline (≥5h/week versus 1-2h/week); and 0.97 (0.83-1.13) and 0.99 (0.93-1.06), respectively, for sport club participation during Junior or Senior high school years (participants versus non participants). When combined, compared to men and women who did sports for less than 5h/week at baseline and did not participate in sport clubs in Junior or Senior high school, the multivariate-adjusted hazard ratio of CHD for those who did sports for ≥5 h/week and participated in sport clubs was 0.70 (0.46-1.07), and for those who did sports for ≥5h/week but did not participate in sport clubs was 0.90 (0.63-1.27). The corresponding multivariate-adjusted hazard ratios for total CVD were 0.79 (0.66-0.95) and 0.80 (0.68-0.94), respectively.
Conclusion: Participating in sports activities during adolescence might have an additional risk-reducing effect for CHD mortality among those who participate in sports activities during adulthood.
Author Disclosures: K. Gero: None. H. Iso: None. A. Kitamura: None. K. Yamagishi: None. H. Yatsuya: None. A. Tamakoshi: None.
- © 2015 by American Heart Association, Inc.