Stamatis Agiovlasitis

Prediction of oxygen uptake during level treadmill walking in individuals with multiple sclerosis

Abstract:
This study examined whether the oxygen uptake (VO2) during walking at different speeds in people with multiple sclerosis (MS) is underestimated by available prediction equations and whether such underestimation relates to the validity of their assumptions.Methods: The VO2 was measured in 18 adults with MS and 18 adults without MS at rest and during treadmill walking at 2.0, 3.0, and 4.0 mph with open-circuit spirometry. The actual VO2 was compared to that estimated by the American College of Sports Medicine (ACSM) and the van der Walt and Wyndham equations. Rehabilitation and exercise professionals should recognize that these equations underestimate VO2 during treadmill walking in individuals with and without MS.

Citation:
Agiovlasitis, S., Motl, R.W., & Fernhall B. (2010). Prediction of oxygen uptake during level treadmill walking in individuals with multiple sclerosis. Journal of Rehabilitation Medicine, 42, 650-655.

Prediction of VO2peak from the 20-m Shuttle-Run Test in youth with Down Syndrome

Abstract:
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 DS (n=53; 25 women; age 8-20 years) and whether these variables can be used to develop an equation to predict VO2peak. 20-m shuttle-run performance, sex, and BMI 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.

Citation:
Agiovlasitis, S., Pitetti, K.H., Guerra, M., & Fernhall, B. (2011). Prediction of VO2peak from the 20-m shuttle-run in youth with Down syndrome. Adapted Physical Activity Quarterly, 28(3), 146-156.