Metabolic cost of aerobic dance bench stepping at varying cadences

Date
2000-05
Authors
Grier, Tamara
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Abstract
Previous research has failed to examine cadence and bench height when determining metabolic cost of aerobic dance bench stepping. The purpose of this study was to determine the acute metabolic and cardiovascular responses of aerobic dance bench stepping at 6 and 8 inch bench heights at cadences of 125 and 130 beats min<sup>-1</sup>. Subjects were 30 moderately fit females, ages 19-47 years, with a minimum of 2 months aerobic dance bench stepping experience. VO<sub>2</sub>max was determined using the Balke-Ware treadmill protocol. Subjects performed 4 submaximal aerobic dance bench stepping tests. Each test measured VO<sub>2</sub>, VCO<sub>2</sub>, HR, and APE at a cadence of 125 or 130 beats min<sup>-1</sup> and 6 or 8 inch bench heights. A two-way repeated measures factorial ANOVA revealed no physiological differences between the two selected cadences. This suggests that the cadence does not affect the intensity of aerobic dance bench stepping. A significant difference was seen in all variables tested which suggests that the height of the bench does influence intensity. A multiple regression model revealed that the relationship between bench height and body weight was linear (R = .49, p<.05, SEE = 1.03 kcal min<sup>-1</sup>). Caloric cost (kcal min<sup>-1</sup>) = 3.06 + (.07 x body weight in kg). The inclusion of step height in the model increased R to .67 and decreased the SEE to .90kcal min<sup>-1</sup> Caloric cost (kcal min<sup>-1</sup>) or 6-inch bench = 2.64 + (.07 x body weight in kg). Caloric cost (kcal min<sup>-1</sup>) for 8-inch bench = 3.68 + (.07 x body weight in kg). Inclusion of body height into the regression model did account for additional variance in the caloric cost (R = .71, SEE= .85 kcal min1 ,F1, 53 = 6.45, P<-05) Caloric cost (kcal· min-1) for 6-inch bench = 8.22 + (.08 x body weight in kg) - (0.04 x height in cm). Caloric cost (kcal min<sup>-1</sup>) for 8-inch bench = 9.26 + (.08 x body weight in kg) - (0.04 x height in cm). It was concluded that cadences of 125 and 130 beats min<sup>-1</sup> do not affect the cardiovascular and metabolic responses in aerobic dance bench stepping. The data suggests that the height of the bench does influence intensity, an 8 inch bench produce a higher metabolic response than a 6 inch bench. A model that estimates caloric cost was devised using bench height, body weight, and body height.
Description
Keywords
Step aerobics, Aerobic dance, Energy metabolism
Citation
Grier, T. D. (2000). <i>Metabolic cost of aerobic dance bench stepping at varying cadences</i> (Unpublished thesis). Southwest Texas State University, San Marcos, Texas.