Age-adjusted baseline characteristics of 51,642 participating women from the Nurses' Health Study and 47,674 women from the Nurses' Health Study II by minutes of muscle-strengthening and conditioning activity per week.

Muscle-strengthening and conditioning activity is defined as resistance exercise and lower intensity conditioning exercise (yoga, stretching, toning). Values are means (standard deviation [SD]) or percentages and are standardized to the age distribution of the study population.a Aerobic MVPA consists of brisk walking, jogging, running, bicycling, tennis, swimming, other aerobic exercise, other vigorous exercise, and stair climbing.P∶S ratio, polyunsaturated fat to saturated fat ratio.