This study examined whether 20-m shuttle-run performance, sex, body mass index (BMI), age, height, and weight are associated with peak oxygen uptake (VO2peak) in youth with Down syndrome (DS; n = 53; 25 women, age 8–20 years) and whether these variables can be used to develop an equation to predict VO2peak. BMI, 20-m shuttle-run performance, and sex were significantly associated with VO2peak in youth with DS, whereas age, height, and weight were not. A regression model included only shuttle-run performance as a significant predictor of VO2peak; however, the developed prediction equation had low individual predictability. Therefore, 20-m shuttle-run performance alone does not provide valid prediction of VO2peak in youth with DS. Sex, BMI, age, height, and weight do not improve the prediction of VO2peak.
Stamatis Agiovlasitis is with the Department of Kinesiology at Mississippi State University in Mississippi State, MS. Kenneth Pitetti is with the Physical Therapy Department at Wichita State University, Wichita, KS. Myriam Guerra is with the University Ramon Llull in Barcelona, Spain. Bo Fernhall is with the Department of Kinesiology and Community Health at the University of Illinois at Urbana-Champaign.