The aim of this study was to assess the long-term effects that the manipulation of the motivational climate can produce on social factors, psychological mediators, motivation and behavioural consequences. 283 student-athletes with ages ranging from 14 to 18 years (M = 13,54 ± 1,31) completed a questionnaire that included the BPNES, the PLOC, the subscales cooperative learning and improvement of the PMCSQ-2, as well as persistence, effort and boredom subscales. Epstein's TARGET strategies were applied to the experimental group during 12 weeks by specially trained coaches. The repeated measures MANOVA showed significant changes in all variables in the experimental group in post-test 1.Furthermore, these changes were maintained in most variables six months after the intervention (post-test 2). No significant changes were observed in the control group. Finally, the results are discussed and future lines of intervention are proposed.

This study was designed with a dual goal: (1) to compare the change in the scores of depressive symptoms by means of the implementation of three intervention programs in comparison to a control group: a) based on Epstein's TARGET (ET), b) without TARGET strategies (NET), and c) under conditions of active exercise (AE); and (2) to analyze whether the Self-determination Index (SDI) predicts the reduction of depressive symptoms. The participants (N = 106; 68 females and 38 males), aged between 18-30 years, were randomly assigned to one of the groups. Each treatment lasted 8 weeks (3 hours/week). Of the ET participants, 59.26% showed a therapeutic response, defined as a 50% reduction in the reference score, versus 25.93% for the NET, 19.23% for the AE, and 3.84% for the control group. After six months, the ET group increased their percentage of therapeutic response by slightly more than 10%, which did not occur in the other groups. SDI predicted lower levels of depressive symptoms, and our findings indicate that TARGET strategies can have a direct effect on depressive symptoms at the time of intervention and an indirect effect at a later stage due to their impact on future levels of physical activity.

La muestra estuvo formada por estudiantes del último ciclo de Educación Primaria (N = 261), con edades comprendidas entre los 10 y los 12 años. El modelo de ecuaciones estructurales mostró que los factores sociales predijeron significativamente la satisfacción de las necesidades psicológicas básicas que, a su vez, predijeron los niveles de motivación intrínseca que, sucesivamente, informaron de los niveles de esfuerzo en las clases de educación física. De todo ello se extraen interesantes consecuencias didácticas para la educación física.

DNA-anti-DNA cold precipitable complexes (CPC) isolated from 21 patients with systemic lupus erythematosus were tested for their ability to stimulate polymorphonuclear leukocyte (PMN) chemotaxis and to activate complement in vitro. The complexes activated complement in 20 out of 21 cases and stimulated PMN chemotaxis in 13 out of 21. The stimulation of chemotaxis was present in the majority of patients with renal involvement (10 out of 13) and active disease (8 out of 9), while being almost negligible in those without renal involvement or active disease. In patients studied sequentially, CPC-stimulated chemotaxis was reduced to nil with the remission of the disease. CPC appears to play a pathogenic role in active systemic lupus erythematosus with renal involvement.

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