Abstract
Saitoh M, Matsunaga A, Kamiya K, Ogura MN, Sakamoto J, Yonezawa R, Kasahara Y, Watanabe
H, Masuda T. Comparison of cardiovascular responses between upright and recumbent
cycle ergometers in healthy young volunteers performing low-intensity exercise: assessment
of reliability of the oxygen uptake calculated by using the ACSM metabolic equation.
Objectives
To clarify (1) differences in cardiovascular response during low-intensity exercise
in the upright versus the recumbent position, and (2) whether the oxygen uptake (V̇o2) calculated by the American College of Sports Medicine (ACSM) metabolic equation
reflects the actual V̇o2 at low-intensity testing.
Design
Repeated-measures comparison study.
Setting
University research laboratory.
Participants
Thirty-one healthy, young volunteers (age, 23±2y).
Interventions
Not applicable
Main outcome measures
Blood pressure, rate pressure product (RPP), V̇o2, oxygen pulse, carbon dioxide output (V̇co2), and ventilatory equivalent (V̇e) were measured during graded exercise testing using upright and recumbent cycle ergometers.
The estimated V̇o2 was calculated by using the ACSM metabolic equation.
Results
Systolic blood pressure, RPP, V̇o2, oxygen pulse, V̇co2, and V̇e at 15 or 30W were significantly higher in the recumbent position than in the upright
one (P<.05), however, no significant differences were observed at 50 and 70W. The estimated
V̇o2 during exercise was significantly higher than the actual one, at every level of intensity,
from 15 to 70W (P<.05).
Conclusions
Cardiovascular responses should be carefully monitored even during low-intensity exercise
using a recumbent cycle ergometer. The V̇o2 estimated using the ACSM metabolic equation did not reflect the actual V̇o2 during low-intensity exercise at 70W or less.
Key words
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References
- ACSM’s guidelines for exercise testing and prescription.6th ed. Williams & Wilkins, Philadelphia2000
- Physiologic response to recumbent versus upright cycle ergometry, implications for exercise prescription in patients with coronary arteries disease.Am J Cardiol. 1992; 69: 40-44
- Cardiovascular responses during upright and semirecumbent cycle ergometry testing.Med Sci Sport Exerc. 1989; 21: 581-585
- Physical responses of cardiac patients to supine, recumbent, and upright cycle ergometry.Arch Phys Med Rehabil. 1995; 76: 257-261
- Exercise physiology. System of energy delivery and utilization.in: 4th ed. Williams & Wilkins, Philadelphia1996: 296-312
- [Cardiopulmonary response during supine and sitting bicycle exercise].Jpn J Phys Fitness Med. 1995; 44 ([Japanese]): 105-112
- [Adaptation to a cycle ergometer exercise of patients with acute myocardial infarction undergoing phase I cardiac rehabilitation. Cardiovascular responses and autonomic nervous activities during low-intensity exercise].J Jpn Assoc Cardiac Rehabil. 2002; 7 ([Japanese]): 104-108
- Adaptation process to a low-intensity exercise with cycle ergometer by patients with acute myocardial infarction undergoing phase I cardiac rehabilitation.Circ J. 2004; 68: 938-945
- Predischarge early exercise therapy in patients with acute myocardial infarction on the basis of anaerobic threshold (AT).Jpn Circ J. 1990; 54: 1419-1425
- The effects of posture on the metabolic and ventilatory response to low level steady state exercise.Clin Sci. 1986; 71: 553-558
- Cardiovascular and pulmonary responses to exercise.in: Ellestad M. Selvester R. Mishkin F. James F. Stress testing. 5th ed. Oxford Univ Pr, New York2003: 11-41
- Estimating exercise stroke volume from asymptomatic oxygen pulse in humans.J Appl Physiol. 1996; 81: 2674-2679
- Exercise testing and interpretation.Lea & Febiger, Philadelphia1987
- Position as a variable for cardiovascular responses during exercise.Clin Cardiol. 1987; 10: 137-142
- Submaximal responses to upright, recumbent and supine bicycle ergometer exercise [abstract].Med Sci Sport Exerc. 1990; 22: S12
- Cardiopulmonary responses at various angles of cycle backrest inclination.J Jpn Phys Ther Assoc. 1999; 2: 31-36
- American College of Sports Medicine. ACSM resource manual for the guidelines for exercise testing and prescription.4th ed. Williams & Wilkins, Philadelphia2001
- Energy and thermal regulation during bed rest and spaceflight.J Appl Physiol. 1989; 67: 507-516
- Effect of 20 days bed rest upon peripheral capillary filtration rate, venous compliance and blood flow in arms and legs.Acta Physiol Scand. 1994; 616: 65-69
- Effects of diltiazem on cardiac function and regional blood flow at rest and during exercise in a conscious rat preparation of chronic heart failure.Circulation. 1985; 71: 1262-1270
- Reduced exercise tolerance in chronic heart failure and its relationship to neurohumoral factors.Eur Heart J. 1991; 12: 21-28
Article Info
Footnotes
Supported in part by a grant-in-aid for scientific research (grant no. 15500383) from the Ministry of Education, Science, and Culture in Japan.
No commercial party having a direct financial interest in the results of the research supporting this article has or will confer a benefit upon the authors(s) or upon any organization with which the author(s) is/are associated.
Identification
Copyright
© 2005 American Congress of Rehabilitation Medicine and the American Academy of Physical Medicine and Rehabilitation. Published by Elsevier Inc. All rights reserved.
