Final answer:
The exact percentage of Canadian adults not adhering to physical activity guidelines in 2015 is not specified, but similar trends in the United States where 80% did not meet guidelines suggest it may also be significant in Canada. Adherence to the 2018 Physical Activity Guidelines is vital for health benefits.
Step-by-step explanation:
The percentage of Canadian adults who did not adhere to physical activity guidelines in 2015 is not provided in the reference material given. However, an inference can be made based on provided data from the United States, where a 2018 report from the American Heart Association estimated that 80% of Americans did not meet the physical activity guidelines. Considering lifestyle and behavior trends tend to be similar in Canada and the United States, it is possible that a significant portion of Canadian adults also fell short of the guidelines around that time. The 2018 Physical Activity Guidelines suggest adults engage in at least 150 minutes of moderate-intensity aerobic activity per week, among other recommendations, for substantial health benefits.
The non-adherence to physical activity guidelines can have several implications for health and well-being, contributing to the prevalence of obesity, heart disease, diabetes, and other chronic conditions. Given the similarities in lifestyle between Canadians and Americans, along with the rise of sedentary behaviors and the use of labor-saving devices, it's plausible that Canadians faced a similar challenge of physical inactivity during that period.