Estimated HRs and 95% CIs for all-cause mortality associated with levels of moderate aerobic physical activity (MPA), vigorous aerobic physical activity (VPA) and muscle- strengthening exercise (MSE) relative to less than 30 min of MPA, less than 30 min of VPA and 0 times of MSE per week. HRs are estimated using CPH models including indicator variables for different levels of all forms of physical activity. CPH models allow for combinations of age, sex and race to have their own baseline hazard. CPH models control for income, education, marital status, smoking status, BMI, chronic conditions and survey year. HRs and 95% CIs are plotted on a natural log scale. BMI, body mass index; CPH, Cox proportional hazard.