Complex sentence: In 1998, with the appointment of Sven Goran Eriksson, Di Salvo started to work as the fitness coach of the first team during this time the club enjoyed the most successful period in its history.
Split into simpler sentences: In 1998, with the appointment of Sven Goran Eriksson, Di Salvo started to work as the fitness coach of the first team. During this time the club enjoyed the most successful period in its history.