The effect of isometric training on prevention of bone density reduction in injured limbs during an immobilization period

The aim of this study was to examine the effect of isometric training on prevention of bone density reduction of limbs during an immobilization period. In this quasi-experimental study, 60 men with fractures of the femoral bone, needing at least one month immobilization period, were selected and randomly assigned in control and experimental groups, the latter undergoing isometric training. The amount of bone density was measured by DEXA set. The data were inferentially analyzed using independent t-test. Isometric training in immobilization period after injury prevented loss of mineral density in neck and greater trochanter of femoral bone, and also significantly increased the mineral density of femoral bone in the experimental group. Isometric exercises not only prevent reduction of bone density, but may also increase the mineral density of the injured bone.