Diffusion Sport, one of the leading sporting goods industry publications, has been integrated into Grupo Peldaño, a 30-year-old Spanish publishing group with seven other trade magazines in tourism, caravanning and other sectors. Manuel Freixas, the 63-year-old entrepreneur who founded Diffusion Sport in 1982, will continue to run it for at least some months. Jordi Villagut will continue as editorial director. Grupo Peldaño is based in Madrid, but Diffusion Sport will continue to operate out of Barcelona.