Ice breakers can be an effective way of starting a training session or Team Building event. As interactive and often fun sessions run before the main proceedings, they help people get to know each other and buy into the purpose of the event.
If such a session is well-designed and well-facilitated, it can really help get things off to a great start. By getting to know each other, getting to know the facilitators, and learning about the objectives of the event, people can become more engaged in the proceedings and so contribute more effectively towards a successful outcome.