Determination of ventilatory threshold in adolescents with mental retardation, with and without Down Syndrome

Tracy Baynard, Viswanath B. Unnithan, Kenneth H. Pitetti, Bo Fernhall

Research output: Contribution to journalArticlepeer-review

5 Citations (Scopus)

Abstract

This study evaluated detection of ventilatory threshold (VT) in adolescents with mental retardation (MR) (17 with MR, 13 with MR and Down Syndrome (DS), mean age 17.5 years). Subjects performed an individualized treadmill VO2peak test. Two evaluators reviewed the same VT plots 6 weeks apart, using 5 different methods. VE vs. time elicited the most detectable cases (83%), but significantly fewer youth with DS exhibited a detectable VT using any combination of methods (62% vs. 100%). Only VE vs. time yielded acceptable detection rate, although this may have been influenced by the protocol used. Intra-evaluator correlation coefficients ranged from 0.91-0.97, and interevaluator reliability coefficients ranged from 0.81-0.93. These findings suggest determination of VT is difficult in this population when using an individualized treadmill protocol, especially in adolescents with DS.
Original languageEnglish
Pages (from-to)126-137
Number of pages12
JournalPediatric Exercise Science
Volume16
Issue number2
DOIs
Publication statusPublished - May 2004
Externally publishedYes

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