Device for decreasing flow of ventilated air by user during physical exercise in e.g. fitness industry, has partially perforated removable element placed on front part of mouth piece in order to variably decrease flow of ventilated air

摘要

The device has a mouth piece (1) comprising a partially closed rear portion that includes a reduced output orifice (2). A partially perforated removable element (3) is placed on a front portion of the mouth piece in order to decrease flow of ventilated air in variable manner. The removable element includes holes having geometric shapes and variable sizes.