A device for securing a gated enclosure includes a latch including a power lock motor and a bolt. Said controller comprises an adjusting piston for changing the relative position of unbalanced masses in the vibration exciter that is coupled to a reference piston. The pre-buffer is configured to receive and buffer a plurality of sets of data of a transport block in a shuffled order. The selection of a specific accessory grip allows the user to exercise by specific body parts and provides for a greater number of possible exercises. A support tube concentric to the longitudinal axis extends between the first and second end disks. The CUEs can dynamically opt out of the UE cooperation according to the channel quality of the CUEs or TUE.