Because of this trespass, the tissue looses its elasticity and may become painful when the muscle is required to do work in co-ordination with others. In the long term collagen would begin to replace the active fibres of the muscles, and since collagen is fairly resistant to enzyme breakdown, these changes tend to be irreversible. This situation makes working with fibrotic tissue very difficult and, at times, frustrating. Stretching the tissues along and across the fibres is used to help break down the collagen fibres, this is followed by passive stretching. As with the treatment of fascia, active stretching is necessary to maintain the pliability and length of the muscle.
Some techniques have to be adapted to suit the heavy bodybuilder.
When it is only possible to work on the floor you also need to adapt your posture to protect your own back The sports person During exercise of long duration like running and swimming the energy for muscle work is derived from the aerobic glycolysis process as there is sufficient time to keep a constant supply of oxygen to the muscle. In explosive type of exercise like that of weight lifting and sprinting the energy derived by aerobic glycolysis is not enough to meet the demand of the muscle so it is supplemented by that of the anaerobic glycolysis. Because of the reduced supply of oxygen there tends to be a residue of lactic acid in the muscle. This also happens, to an extent, in exercise of long duration. Metabolites like lactic acid and carbon dioxide are likely to be found in muscles following exercise, depending of course on the state of health and efficiency of circulation in the athlete.