The aging process promotes a series of organism modifications, especially changes in the respiratory system1 such as the reduction of the total lung capacity (TLC), the forced expiratory volume in one second (FEV1) and the forced expiratory flow (FEF), as well as increases the functional residual capacity (FRC) and the expiratory reserve volume (ERV). These changes are related to decrease both lung elastic recoil and the thoracic complacency capacity2,3. Such alterations when associated with a reduction of muscle strength can lead to a reduced peak expiratory flow (PEF)2,4. On the other hand, Britto et al.5 have found no significant differences in relation to the variables volume and timing of the breathing pattern when comparing adults with elderly.