M E Roebroeck

A comparison of one-legged and two-legged countermovement jumps.

G J van Ingen Schenau, A J van Soest, M F Bobbert, 1985, Medicine and science in sports and exercise.

Everyday physical activity in adolescents and young adults with meningomyelocele as measured with a novel activity monitor.

J B Bussmann, H J Stam, J. Bussmann, 2001, The Journal of pediatrics.