KPER 1200 Lecture 2: Schellenberg Term 2[1146]

• School: University of Manitoba
• Department: Kinesio, Phys Ed, & Recreation
• Course: KPER 1200
• Professor: Schellenberg

Document Summary

All-cause mortality death by any cause the ultimate dependent variable. Null hypothesis (starting point) physical activity does not affect the risk of all-cause mortality. Alternative hypothesis (predictions) physical activity reduces the risk of all-cause mortality. Began in 1976 with 121,700 female nurses. How diet lifestyle and genetics affect women"s lifestyles. Research paper 2001 analyzed data from nurses health study. Started with 1980 dataset, the first-year physical activity was assessed. 1980: average number of hours spent each week on different activities. 1982: for how many hours per week on average do you engage in active strenuous activities enough to build up a sweat? . 1986 and beyond: hours per week on specific activities. Used results to estimate average physical activity hours per week. Women who engaged in physical activity were at a lower risk of all-cause mortality. Risk of all-cause mortality decreased by approximately 20-30% as activity level increased. They did a review of 33 studies, involving almost 900,000 participants.