During soccer practice, what is the most appropriate immediate treatment for a large laceration on an arm that is bleeding?

In the event of a large laceration that is actively bleeding, applying pressure with a clean cloth is the most appropriate immediate treatment. This action helps to control the bleeding by promoting clot formation and reducing blood loss. When direct pressure is applied to the area of the laceration, it can help stem the flow of blood until further medical treatment can be obtained.

Using ice directly on the wound may provide some local pain relief and help reduce swelling, but it is not effective for controlling bleeding and can also risk causing additional tissue damage. Applying a tourniquet is typically reserved for severe cases where there is significant life-threatening bleeding and is not generally recommended as a first response for a manageable laceration because it can lead to complications if not properly administered. Rinsing the wound with water immediately may also expose the wound to contaminants, which is not advisable when controlling bleeding is the priority. Therefore, applying pressure with a clean cloth is the best initial action.