01565nas a2200241   4500000000100000008004100001260007600042653002600118653001600144653002500160653002300185653001200208653001800220100002900238700003000267700002400297245009400321300001100415490000600426520086300432022001401295020001401309       1998                            d  c01/1998bSociedad Española para el Estudio de la Ansiedad y el Estrés10aRelaxation techniques10aBiofeedback10aBreathing techniques10aAutogenic training10aAnxiety10aMeta-analysis1 aAna Isabel Rosa Alcázar1 aJosé Olivares Rodríguez1 aJulio Sánchez Meca00aDifferential effects of relaxation techniques on anxiety: A meta-analytic review in Spain  a97-1100 v43 aIn this paper the results of a metaanalytic review about the effectiveness of relaxation techniques on anxiety problems are presented. A total of 14 independent primary studies carried out in Spain from 1980 to 1996 were localised. The effect size index selected to integrate the study outcomes was the standardised mean difference, d, achieving an average value of d+ = 0.931. The results do not showed statistically significant differences among different relaxation techniques, although higher results were obtained when several relaxation techniques were combined (autogenic training and progressive relaxation, progressive relaxation and biofeedback). The mean effect size for state-anxiety (d+ = 1.126) stand out against trait-anxiety (d+ = 0.932) and general anxiety (d+ = 0.930). Finally, the implications of results to future research are discussed.  a1134-7937  a2174-0437