Complex sentence: Though checking is not allowed in women's ice hockey, contact is allowed, and as a result, the game has been regarded as one of the most dangerous college sports, with the concussion rate being 2.72 per 1,000 hours played.
Split into simpler sentences: Though checking is not allowed in women's ice hockey, contact is allowed. Because of this, the game has been named one of the most dangerous college sports, with the concussion rate being 2.72 per 1,000 hours played.