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At a more fine-grained level of analysis, the total time constitutes the time each key is held down (the dwell time) plus the time between the release of one key and the depression of the next (the transition time). All of the individual dwell times plus all of the transition times will sum to the total time. We could express these numbers another way by dividing the time for each individual band by the total time for that trial to obtain a relative proportion of time represented by each ...
A recent review of the results of more than 60 observational, epidemiological studies of physical activity and breast cancer concluded that physically active women have a lower risk of developing breast cancer than sedentary women (Physical Activity Guidelines Advisory Committee 2008). A systematic review of case–control studies of recreational activity and breast cancer risk estimated that each additional hour of physical activity per week reduced risk of postmenopausal breast cancer by 6% ...
