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Rixon, K.P., P.R. Rehor, and M.G. Bemben. Analysis of the assessment of caloric expenditure in four modes of aerobic dance. J. Strength Cond. Res. 20(3):593-596. 2006.-Aerobic dance has been purported to help with weight management; however, it is not known if various forms of dance are as effective as traditional modalities. This study estimated energy expenditure by heart rate for 28 women participating in 4 modes of aerobic dance (Bodycombat [i.e., TAEBO]; Pump;Step; and RPM [i.e., spinning]) compared to 2 running speeds. Pump had significantly (p Ͻ 0.01) lower energy expenditure (8.0 Ϯ 1.6 kcal·min Ϫ1 ) compared to the other classes (RPM: 9.9 Ϯ 1.9 kcal·min Ϫ1 ; Step: 9.6 Ϯ 1.8 kcal·min Ϫ1 ; and Bodycombat: 9.7 Ϯ 2.0 kcal·min Ϫ1 ) and running at 8.05 km·h Ϫ1 (9.16 Ϯ 1.53 kcal·min Ϫ1 ). Also, Step (p Ͻ 0.01), Bodycombat (p Ͻ 0.01), and RPM (p Ͻ 0.01) had significantly higher caloric expenditures than running at 8.05 km·h Ϫ1 but significantly lower than running at 8.37 km·h Ϫ1 (10.30 Ϯ 1.72 kcal·min Ϫ1 ). In conclusion, RPM, Bodycombat, and Step aerobics were equally as effective as jogging between 8.05 and 8.37 km·h Ϫ1 , and they met American College of Sports Medicine guidelines for weight modification and maintenance. Additionally, heart rate assessment provided a quantitative method for estimating energy expenditure and the effectiveness of different aerobic programs.