AU - Strong WB, Stanitski CL, Smith RE, Wilmore JH, Pratt M TI - STrength, flexibility, and maturity in adolescent athletes PT - JOUR DP - 1989 TA - American Journal of Diseases of Children pages = {560-563}, VI - 143 IP - 5 AID - 10.1001/archpedi.1989.02150170058022 [doi] 4100 - http://dx.doi.org/10.1001/archpedi.1989.02150170058022 SO - American Journal of Diseases of Children May 1, 1989 143(5):560