Journal of Sports Science and Medicine
Journal of Sports Science and Medicine
ISSN: 1303 - 2968   
Ios-APP Journal of Sports Science and Medicine
Androit-APP Journal of Sports Science and Medicine
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©Journal of Sports Science and Medicine (2006) 05, 662 - 671

Research article
Relationship Between %Heart Rate Reserve And %VO2 Reserve During Elliptical Crosstrainer Exercise
Lance C. Dalleck1, , Len Kravitz2
Author Information
1 Human Performance Laboratory, University of Wisconsin, Eau Claire, Eau Claire, WI USA
2 Exercise Physiology Laboratories, University of New Mexico, Albuquerque, NM, USA

Lance C. Dalleck
✉ Department of Kinesiology, McPhee 227, 105 Garfield Avenue, P.O. Box 4004, University of Wisconsin – Eau Claire, Eau Claire, WI 54702, USA.
Email: dalleclc@uwec.edu
Publish Date
Received: 31-07-2006
Accepted: 18-10-2006
Published (online): 15-12-2006
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ABSTRACT

The primary purpose of the study was to determine the relationships between %HRR vs. %VO2R and %HRR vs. %VO2max during maximal elliptical crosstrainer (ECT) exercise. A secondary aim was to compare the %HRR vs. %VO2R and %HRR vs. %VO2max relationships between maximal ECT and treadmill (TM) exercise. Adult subjects (n = 48) completed a maximal exercise test on the ECT, with a subgroup (N = 24) also performing a maximal exercise test on the TM. Continuous HR and VO2 data were analyzed via linear regression to determine y-intercept and slope values for %HRR vs. %VO2R and %HRR vs. %VO2max. Student t-tests were used to determine whether the mean y-intercept and slope values differed from the line of identity (y-intercept = 0, slope = 1). For each group, both the y-intercept and slope for %HRR vs. %VO2R fit the line of identity. Conversely, for all groups both the y-intercept and slope for %HRR vs. %VO2max were significantly different (p < 0.001) from the line of identity (y-intercept ≠ 0, slope ≠ 1). In comparing the regressions of %HRR vs. %VO2R between exercise modes, there were no significant differences (p > 0.05) for either y-intercept (ECT = 0.3 vs. TM = -0.3, p = 0.435) or slope (ECT = 1.01 vs. TM = 1.00, p = 0.079) values. In agreement with previous research on TM and cycle exercise, it was found that %HRR is more closely aligned with %VO2R, rather than %VO2max during ECT exercise. Additionally, it was found that the regressions of %HRR vs. %VO2R and %HRR vs. %VO2max were equivalent between the ECT and TM.

Key words: Exercise mode, regression, exercise prescription


           Key Points
  • The present study showed that %HRR is aligned with %VOR, not %VOmax, during maximal ellipitcal crosstrainer exercise.
  • It was found that the relationships between %HRR vs. %VOR and %HRR vs. %VOmax were equivalent between the ellipitcal crosstrainer and treadmill.
  • This study revealed that the elliptical crosstrainer produced similar maximal physiological values (VOmax, HR, RER) compared to treadmill running during VOmax testing.
 
 
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