Validity of an Accelerometer Used to Measure Step Count in Children With Idiopathic Toe Walking

    loading  Checking for direct PDF access through Ovid



To assess the validity of accelerometer use in children with idiopathic toe walking (ITW).


Seventy-five children, 2 to 13 years old, with ITW were videotaped ambulating 50 ft wearing a NL-1000 accelerometer. Because of concerns for accelerometer accuracy in young children, 2 groups were created: 5 years or younger (n = 45) and 6 years or older (n = 30). Step counts recorded via accelerometer and video were compared and correlated.


There was a significant difference in accelerometer and video step counts for 2- to 5-year-olds (W = 72.00, P < .001). No significant difference was found for 6- to 13-year-olds (W = 65.00, P = .24). Spearman ρ values were 0.78 and 0.92 for the 5 years or younger and 6 years or older groups, respectively.


Accelerometers accurately count steps in 6- to 13-year-olds with ITW but are inaccurate in 2- to 5-year-olds.

Related Topics

    loading  Loading Related Articles