Staffordshire University logo
STORE - Staffordshire Online Repository

Use of Oxygen Pulse in Predicting Doppler-Derived Maximal Stroke Volume in Adolescents

UNNITHAN, Vish and Rowland, Thomas (2015) Use of Oxygen Pulse in Predicting Doppler-Derived Maximal Stroke Volume in Adolescents. Pediatric Exercise Science, 27 (3). pp. 412-419. ISSN 0899-8493

[img] Text
13 Unnnithan PES_FinalCorrectedVersion.pdf - Publisher's typeset copy
Restricted to Repository staff only

Download (855kB) | Request a copy

Abstract or description

Clinical exercise physiologists and physicians administering stress tests in the young have used oxygen pulse as a surrogate measure of stroke volume. It is important to recognize 1) the accuracy of O2 pulse in predicting maximal stroke volume during exercise, and 2) the normal pattern of O2 pulse during a progressive exercise test. This study examined both of these issues in a cohort of 44 healthy adolescent males and females (ages 14–16 years) who performed routine progressive cycle exercise to exhaustion. Gas exchange variables were measured by standard open circuit techniques. Stroke volume at rest and during exercise was assessed by theDoppler ultrasound method. At peak exercise O2 pulse correlated closely with stroke volume (r = .73) with aSEE of 12.6 ml·beat-1. Values of maximal O2 pulse in nonathletic boys and girls were 13.3 ± 2.5 and 11.0 ±1.7 ml·beat-1, respectively. After the initial workload, a steady rise was observed in O2 pulse, entirely reflecting an increasing arterial venous oxygen difference, with a slope of approximately 4 ml/beat per 100 watts workload. The findings support the use of O2 pulse as a valid predictor of stroke volume during exercise in youthwith a moderately high level of accuracy.

Item Type: Article
Faculty: Faculty of Health Sciences > Psychology, Sport and Exercise
Depositing User: Vish UNNITHAN
Date Deposited: 03 Oct 2016 13:53
Last Modified: 03 Oct 2016 13:53
URI: http://eprints.staffs.ac.uk/id/eprint/2513

Actions (login required)

View Item View Item

DisabledGo Staffordshire University is a recognised   Investor in People. Sustain Staffs
Legal | Freedom of Information | Site Map | Job Vacancies
Staffordshire University, College Road, Stoke-on-Trent, Staffordshire ST4 2DE t: +44 (0)1782 294000