the purpose of this study was to examine the effects of two different flexibility training methods, 3s (scientific stretching for sport) and ss (slow active stretching). warmup effects, differential joint responses, and the standardization of training procedures were controlled. ss were 12 school girl basketball players, aged 12 to 1a. the research design consisted of four replications of a 3x3 graeco-latin square. ss were assessed for flexibility at the beginning of a six week flexibility training program, at the conclusion of training and then after two two-week retention periods. data were analyzed with anova and orthogonal comparisons. significance was determined at 0.05 level. results showed: 1) flexibility training methods (3s and ss) improved flexibility, 2) the shoulder joint acquired more flexibility than either the knee or ankle joint, 3) neither flexibility training method was superior to the other, 4) within two weeks of training cessation, both 3s and ss effects were lost to a significant degree when compared to control effects. 5) after two weeks of training cessation, there was no difference between changes of the control and two training groups, and 6) there was no difference in loss of flexibility between the shoulder, the knee and ankle joints.