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ERIC Number: EJ847593
Record Type: Journal
Publication Date: 2006-Dec
Pages: 7
Abstractor: As Provided
Reference Count: 21
ISSN: ISSN-0270-1367
Metabolic Cost of Stride Rate, Resistance, and Combined Use of Arms and Legs on the Elliptical Trainer
Mier, Constance M.; Feito, Yuri
Research Quarterly for Exercise and Sport, v77 n4 p507-513 Dec 2006
We measured the effects of stride rate, resistance, and combined arm-leg use on energy expenditure during elliptical trainer exercise and assessed the accuracy of the manufacturer's energy expenditure calculations. Twenty-six men and women (M age = 29 years, SD = 8; M body weight = 73.0 kg, SD = 15.2) participated. Twenty-two participants performed two tests, one without the arm poles (leg-only) and the other with arm poles (combined arm-leg). The other 4 participants performed one test without the arm poles. Both tests consisted of six 5-min stages (two stride rates, 110 and -1 134 strides.min[superscript -1] , and three resistance settings: 2, 5, and 8). Steady-state oxygen uptake (VO[subscript 2]), minute ventilation (VE), heart rate (HR) and rating of perceived exertion (RPE) were measured. Repeated measures analysis of variance determined higher (p less than 0.001) VO[subscript 2], VE, and RPE, but not HR, during combined arm-leg versus leg-only exercise at any given intensity. Increases in stride rate and resistance increased VO[subscript 2], VE, RPE, and HR with the greatest effect on VE and HR from Levels 5 to 8. The manufacturer's calculated energy expenditure was overestimated during both tests. Although the oxygen cost for elliptical trainer exercise was calculated to be approximately 0.1[superscript -1] per stride and 0.7[superscript -1].min[superscript -1] per resistance level, VO[subscript 2] varied widely among individuals, possibly due to differences in experience using the elliptical trainer, gender, and body composition. The elliptical trainer offers (a) a variety of intensities appropriate for most individuals and (b) both arm and leg exercise. Due to the wide variability in VO[subscript 2], predicting the metabolic cost during elliptical trainer exercise for an individual is not appropriate. (Contains 5 tables.)
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Publication Type: Journal Articles; Reports - Research
Education Level: N/A
Audience: N/A
Language: English
Sponsor: N/A
Authoring Institution: N/A