Box lacrosse The roots of indoor lacrosse are obscure, but its invention has been attributed to one Paddy Brennan, a field lacrosse player and referee from Montreal, who, being annoyed by the constant slowing of play from balls going out of bounds in the field game, experimented with indoor games at the Mount Royal Arena during the early 1920s. Joseph Cattarinich and Leo Dandurand, owners of the National Hockey League's Montreal Canadiens in the 1920s, led the participating ice hockey arena owners to introduce the new sport. In the 1930s, 6 v 6 indoor lacrosse came to be played in the summer
Lacrosse the attacking team to take a shot on goal within 30 seconds of gaining possession of the ball. Box lacrosse is also a much more physical game. Since cross checking is legal in box lacrosse, players wear rib pads and the shoulder and elbow pads are bigger and stronger than what field lacrosse players wear. Box lacrosse players wear a hockey helmet with a box lacrosse cage. There is no offsides in box lacrosse, the players substitute freely from their bench areas as in hockey. However, most players specialize in offense or defense, so usually all five runners substitute for