Please see the pdf version of the abstract.
Ryan, G.; Cravens, S.; Nicholl, L.; and Dobrosielski, D.
"Comparison of Step Test Performance between Peruvian and American College Students,"
International Journal of Exercise Science: Conference Proceedings: Vol. 9
, Article 82.
Available at: http://digitalcommons.wku.edu/ijesab/vol9/iss5/82