Cardiopulmonary exercise testing in children: an individualized protocol for workload increase.

Abstract:

OBJECTIVES:To investigate the feasibility of individualized workload increments, as used in adults, for exercise testing in children; and to investigate whether this individualized protocol makes it possible to satisfy the usual criteria for maximal exercise (clinical exhaustion, predicted maximum heart rate [HRmax], oxygen uptake [O(2)] plateau, maximal respiratory exchange ratio > 1.1). DESIGN:Prospective clinical study. SETTING:Pediatric exercise testing laboratory. SUBJECTS:Ninety-two children aged 5 to 17 years with various cardiac and respiratory diseases (33 with asthma, 11 with bronchopulmonary dysplasia, 6 with cystic fibrosis, 10 with congenital heart disease, and 32 miscellaneous). INTERVENTIONS:Individualized maximal incremental exercise testing. The increase in workload was adapted to the individual and was calculated from predicted maximal oxygen uptake (O(2)max) for each child. The test lasted 10 to 12 min. RESULTS:The exercise test was well tolerated by all children and was maximal in all but seven patients. A total of 65.7% of children reached the predicted O(2)max and 68.4% satisfied the criteria for a O(2) plateau at peak exercise. The predicted HRmax was achieved in all but two children. The mean maximal respiratory exchange ratio was 1.06. CONCLUSION:The individualized protocol for increasing workload, based on O(2) rather than power, was well tolerated by children. In our view, the best two criteria for assessing the maximality of the tests were clinical exhaustion and HRmax, especially if the O(2) plateau was not reached. These results suggest that individualized protocols could be used instead of standardized tests for exercise testing in children.

journal_name

Chest

journal_title

Chest

authors

Karila C,de Blic J,Waernessyckle S,Benoist MR,Scheinmann P

doi

10.1378/chest.120.1.81

subject

Has Abstract

pub_date

2001-07-01 00:00:00

pages

81-7

issue

1

eissn

0012-3692

issn

1931-3543

pii

S0012-3692(15)35796-2

journal_volume

120

pub_type

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