Predicting the rate of oxygen uptake from step counts using ActiGraph waist‐worn accelerometers in adults with Down syndrome

Background Step rate predicts ambulatory intensity as reflected in the rate of oxygen uptake (VO 2 ) – a measure of energy expenditure. Whether step rate as measured by an accelerometer predicts VO 2 in adults with Down syndrome (DS) is unknown. We examined whether step rate predicts VO 2 in adults with and without DS. We also developed an equation for predicting VO 2 and examined its accuracy. Method Sixteen adults with DS (6 women and 10 men;...