In young women with high body mass index, participating in supervised aerobic exercise three times a week for twelve weeks helps maintain stable body weight, waist size, body fat levels, and blood lipid levels, while remaining inactive leads to measurable increases in these measures.

In young women with a BMI between 25 and 27, participating in supervised group aerobic exercise three times a week for 12 weeks leads to measurable decreases in body weight, waist size, and body fat, along with an increase in muscle mass.

In young women with a high body mass index, 12 weeks of supervised mix aerobics leads to larger reductions in body weight, waist size, body fat, and blood cholesterol levels compared to kickboxing or step aerobics.

A 12-week supervised exercise program that burns about 10.5 megajoules per week leads to comparable decreases in body fat and fat mass in overweight and obese men and premenopausal women, with no meaningful difference between the sexes.

In young women with higher body mass index, participating in supervised aerobic exercise three times a week for twelve weeks is associated with an increase in the proportion of muscle mass in the body.

In obese Black South African women aged 20–35 with a BMI of 30–40 kg/m², a 12-week exercise program done four times per week at high intensity increases the body's ability to burn fat during steady exercise and improves maximum oxygen uptake.