The rate pressure product is greater during supine cycle ergometry than during treadmill running
Journal Title: Biology of Sport - Year 2003, Vol 20, Issue 1
Abstract
Supine cycle ergometry (SCE) is used to assess cardiopulmonary fitness and reserves and to predict potential cardiopulmonary complications of cardiac patients and those undergoing abdominal and non-cardiac thoracic surgery. It is also used to simulate exercise during spaceflight. The question arises as to how SCE compares to upright treadmill running (TMR). The purposes were: 1) to compare oxygen uptake, heart rate, blood pressure, and work of the heart (rate-pressure product, RPP) obtained during maximal bouts of SCE and TMR exercise; 2) to compare these parameters at similar oxygen uptakes during SCE and TMR; and 3) to establish a formula for predicting TMR performance based on SCE. Nine males, ages 21-35 years ( =27.44 yr) completed the Bruce TMR and a ramped SCE protocol to determine device specific peak oxygen uptake. Respiratory gasses and volumes, heart rate, blood pressure, and rating of perceived exertion were measured. Oxygen uptake, RPP, mean arterial pressure, parameter means and standard errors were calculated and a paired t-test (P0.05) performed. Absolute and relative peak oxygen uptake and peak heart rates were greater for TMR. SCE produced higher values for systolic, diastolic, and mean arterial pressures, and RPP. Although TMR produces greater systemic stress, SCE causes the greatest exertion by the heart. RPP should be used for evaluation and prescription of exercise rather than HR or BP alone. Increased wall motion abnormalities and ischemic events noted during supine exercise may be due to the heart working harder as well as to better imaging capabilities.
Authors and Affiliations
SR Simonson, FB Wyatt
Keywords
Related Articles
- EP ID EP58849
- DOI -
- Views 137
- Downloads 0
The side-to-side differences in bone mineral status and cross-sectional area in radius and ulna in teenage Taiwanses female volleyball players
Regular physical training has been shown to affect bone development. It has been shown in Caucasians that athletes participated in sports involving long-term unilateral mechanical loading showed significantly larger domi...
ASSESSMENT OF EXTERNAL AND INTERNAL LOADS IN THE TRIPLE JUMP VIA INVERSE DYNAMICS SIMULATION
The triple jump is a demanding athletics event that, after an approach run, consists of three consecutive phases: the hop, the bound, and the jump. During the involved three take-off actions a jumper is exposed to increa...
REPRODUCTIVE HORMONES AND CORTISOL RESPONSES TO PLYOMETRIC TRAINING IN MALES
Plyometric training activities are commonly used by a wide range of athletes to increase jump performance and improve explosive power and muscular activation patterns. The purpose of the study was to evaluate the effects...
THE EFFECTS OF INJURY PREVENTION WARM-UP PROGRAMMES ON KNEE STRENGTH IN MALE SOCCER PLAYERS
The study investigates the effects of the 11+ and HarmoKnee injury prevention programmes on knee strength in male soccer players. Under-21-year-old players (n=36) were divided equally into: the 11+, HarmoKnee and control...
The effects of a 24-week deep water aerobic training program on cardiovascular fitness
The purpose of this study was to determine the influence of prolonged deep water aerobic training on cardiovascular fitness. Two groups of women, each consisting of 19 women between the ages of 30-62 participated in this...