ORIGINAL ARTICLE
Oxygen uptake efficiency slope during exercise in adults with Down syndrome
Goncalo V. Mendonca,
Afonso Borges,
Sang O. Wee,
Bo Fernhall,
Corresponding Author
Goncalo V. Mendonca
CIPER: Laboratory of Motor Behavior, Faculdade de Motricidade Humana, Universidade de Lisboa, Portugal, Lisbon, Portugal
Correspondence
Goncalo V. Mendonca, CIPER: Laboratory of Motor Behavior, Faculdade de Motricidade Humana, Universidade de Lisboa, Portugal, Lisbon, Portugal.
Email: [email protected]
Search for more papers by this authorAfonso Borges
Laboratory of Motor Behavior, Faculdade de Motricidade Humana, Universidade de Lisboa, Portugal, Lisbon, Portugal
Search for more papers by this authorSang O. Wee
Department of Kinesiology, California State University, San Bernardino, CA, USA
Search for more papers by this authorBo Fernhall
Department of Kinesiology, California State University, San Bernardino, CA, USA
Search for more papers by this authorGoncalo V. Mendonca,
Afonso Borges,
Sang O. Wee,
Bo Fernhall,
Corresponding Author
Goncalo V. Mendonca
CIPER: Laboratory of Motor Behavior, Faculdade de Motricidade Humana, Universidade de Lisboa, Portugal, Lisbon, Portugal
Correspondence
Goncalo V. Mendonca, CIPER: Laboratory of Motor Behavior, Faculdade de Motricidade Humana, Universidade de Lisboa, Portugal, Lisbon, Portugal.
Email: [email protected]
Search for more papers by this authorAfonso Borges
Laboratory of Motor Behavior, Faculdade de Motricidade Humana, Universidade de Lisboa, Portugal, Lisbon, Portugal
Search for more papers by this authorSang O. Wee
Department of Kinesiology, California State University, San Bernardino, CA, USA
Search for more papers by this authorBo Fernhall
Department of Kinesiology, California State University, San Bernardino, CA, USA
Search for more papers by this authorAbstract
Background
Persons with Down syndrome (DS) have low aerobic exercise capacity. The present authors sought to compare the oxygen uptake efficiency slope (OUES) between adults with and without DS performing graded exercise testing (GXT) and to investigate its relationship with peak oxygen uptake (VO2peak) in both groups of participants.
Method
Twenty-three participants with DS and 24 non-disabled controls performed GXT with VO2 measurements. OUES was calculated from data of the first 75%, 90% and 100% GXT time. Multiple linear regression analyses were computed to explore associations between the independent (OUES and DS) and the dependent variables (VO2peak).
Results
VO2peak, GXT time and OUES were lower in participants with DS (p < .05). OUES and DS explained 69.3% of the variance in VO2peak.
Conclusions
Our findings show that OUES values are lower in persons with DS. Additionally, it was shown that OUES has predictive value for VO2peak estimations in DS.
CONFLICT OF INTEREST
The present authors declare that the results of the study are presented clearly, honestly and without fabrication, falsification or inappropriate data manipulation.
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