Evaluation of a step-counter during treadmill walking in 7-12 year old African-American children.
Ram?rez-Marrero FA, Smith BA, Kirby TE, Leenders N, Sherman WM. Evaluation of a step-counter during treadmill walking in 7-12 year old African-American children. J Natl Black Nurses Assoc. 2002 Jul; 13(1):1-5.