Is a night workout affecting my sleep?

There are so many gym myths, and one of them includes night workouts making it harder for you to get to sleep. This has been perpetuated by many researchers who have just accepted this assumption.
However a study from Institute of Human Movement Sciences and Sport at ETH Zurich suggests otherwise.
Researchers analysed the findings of 23 studies, and concluded that intense training 4 hours before going to bed does not have a negative effect on sleep quality. In fact, subjects who participated in evening sports spent 21.2% of their time sleeping in a deep state. Overall, the deep sleep average is 19.9% with the only exception showing training within an hour of bed can make it harder to fall asleep.