Submaximal Treadmill Test Predicts V̇O2max in Overweight Children - 08/08/11
, Aaron L. Carrel, MD a, Jens Eickhoff, PhD a, R. Randall Clark, MS b, Susan E. Peterson, MS b, David B. Allen, MD a
Reprint requests: Blaise A. Nemeth, MD, MS, 2870 University Ave, Suite 200, Madison, WI 53705Résumé |
Objective |
To demonstrate the ability of a submaximal test to predict V̇O2max in overweight children.
Study design |
A total of 130 children, 11 to 14 years old, with body mass index >85 percentile for age and sex performed a submaximal walking test. V̇O2max was measured by using open circuit spirometry during a graded exercise test to volitional fatigue. An equation to predict V̇O2max was modeled by using the variables of sex, weight (kg), height (cm), heart rate (HR) after 4 minutes during the submaximal test (4minHR), HR difference (4minHR − resting HR), and submaximal treadmill speed (miles per hour [mph]) in 75% of the subjects. Validation was performed by using the remaining 25% of subjects.
Results |
A total of 113 subjects achieved a maximal effort and was used in the statistical analysis. Development and validation groups were similar in all aspects.
 |
On validation, the mean square error was 241.06 with the predicted V̇O2max within 10% of the observed value in 67% of subjects.
Conclusion |
V̇O2max was accurately predicted in this cohort of overweight children by using a submaximal, treadmill-based testing protocol.
Le texte complet de cet article est disponible en PDF.Abbreviations : 1-MRW, 4minHR, 20-MST, BMI, HR
Plan
| The authors declare no conflicts of interest, real or perceived. |
Vol 154 - N° 5
P. 677 - mai 2009 Retour au numéro
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