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Validation of the sensormedics (S2900Z) metabolic cart for pediatric exercise testing

Unnithan, V.B., Wilson, J., Buchanan, D., Timmons, J.A., and Paton, J.Y. (1994) Validation of the sensormedics (S2900Z) metabolic cart for pediatric exercise testing. Canadian Journal of Applied Physiology, 19 (4). pp. 472-479. ISSN 1066-7814 (doi:10.1139/h94-039)

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Publisher's URL: http://dx.doi.org/10.1139/h94-039

Abstract

The accuracy of many microprocessor controlled exercise testing systems has not been established, particularly for testing children. A metabolic cart (Sensormedics S2900Z) was validated against a reference system (Douglas bag) in children. The systems were tested using 10 active, healthy children (age 11.6 +/- 2.3 yrs) during physiological steady state at two exercise intensities, submaximal walking and running. Eight children performed a high ventilatory flow (HVF) protocol, running for 11 min. All 10 performed a low ventilatory flow (LVF) protocol, walking for 11 min. In both, gas samples were measured after 6 to 7 and 10 to 11 min into the Douglas bag, and after 8 to 9 min by the test system. There was minimal evidence of bias for VO2 at either ventilation rate. Greater variability was noted for FeCO2 and VCO2. In conclusion, the Sensormedics S2900Z appears to be adequate for testing children.

Item Type:Article
Status:Published
Refereed:Yes
Glasgow Author(s):Unnithan, Prof Viswanath and Paton, Dr James
Authors: Unnithan, V.B., Wilson, J., Buchanan, D., Timmons, J.A., and Paton, J.Y.
College/School:College of Medical Veterinary and Life Sciences > School of Medicine
College of Medical Veterinary and Life Sciences > School of Medicine > Clinical Specialities
Journal Name:Canadian Journal of Applied Physiology
Journal Abbr.:Can J Appl Physiol.
ISSN:1066-7814
ISSN (Online):1543-2718
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