A medical therapy arrangement, for applying electrical stimulation to relax spastic muscles of a human or animal subject, comprising - a garment adapted to be tightly arranged at around a body or body part of said subject, and provided with a plurality of muscle electrodes at an inner surface of the garment configured to cover muscles of the subject and which are adapted to be in electrical contact to the skin of the subject to stimulate the muscles, - a control unit adapted to provide each muscle electrode to work as one or many of anode, cathode or being disconnected, in accordance with a predetermined therapy stimulation program, and configured to apply, as electrical stimulation to relax muscles of the subject, an electrical muscle stimulation having a frequency ranging between 2 and 50 Hz, and a duration between 5 and 300 microseconds, to the human or animal subject via said muscle electrodes; wherein said arrangement further comprises - at least one connection unit having an essentially planar extension and made from a flexible material and being provided with a predetermined number of connection elements being respectively electrically connected to said muscle electrodes via separate connection lines being flexible and elastic and being integrated into the garment, - at least one connection board having an essentially planar extension and made from a flexible material and being provided with a predetermined number of connection pads being electrically connected to the control unit, and w herein said connection unit is an integrated part of said garment, wherein said connection board is detachably attachable to said connection unit by a fastening means, such that said connection unit and said connection board, when attached to each other, are positioned in relation to each other in order to electrically connect the connection pads to mate with the connection elements. - a garment adapted to be tightly arranged at around a body or body part of said subject, and provided with a plurality of muscle electrodes at an inner surface of the garment configured to cover muscles of the subject and which are adapted to be in electrical contact to the skin of the subject to stimulate the muscles, - a control unit adapted to provide each muscle electrode to work as one or many of anode, cathode or being disconnected, in accordance with a predetermined therapy stimulation program, and configured to apply, as electrical stimulation to relax muscles of the subject, an electrical muscle stimulation having a frequency ranging between 2 and 50 Hz, and a duration between 5 and 300 microseconds, to the human or animal subject via said muscle electrodes; wherein said arrangement further comprises - at least one connection unit having an essentially planar extension and made from a flexible material and being provided with a predetermined number of connection elements being respectively electrically connected to said muscle electrodes via separate connection lines being flexible and elastic and being integrated into the garment, - at least one connection board having an essentially planar extension and made from a flexible material and being provided with a predetermined number of connection pads being electrically connected to the control unit, and w herein said connection unit is an integrated part of said garment, wherein said connection board is detachably attachable to said connection unit by a fastening means, such that said connection unit and said connection board, when attached to each other, are positioned in relation to each other in order to electrically connect the connection pads to mate with the connection elements.