The final report of the Biomechanics Research Project carried out during the 6th World Athletics Championships in Athens, 1997. The purposes of this project were: to update the database of biomechanical parameters of elite athletes; to support coaches and athletes with quantitative information on individual techniques; to improve the general knowledge of the limiting factors of athletic performance; to generate data on gender specific techniques; and to support the international media in producing competent, attractive athletics coverage and presentation of the colected scientific data. The project focused on the finals (men and women) of the following events: 100m, 200m, 400m; 100m and 110m hurdles; 5000m and 10,000m; long, triple and high jump; pole vault; and discus throw. Of special interest were different characteristics of female techniques in the jumping, sprinting and throwing events. The long distance events were chosen to study the effects of fatigue on running techniques and mechanical efficiency. The data was gathered using high-speed video techniques, three-dimensional motion analysis, speed and time measurements.