<prompt> Vital capacity is decreased, timed vital capacity FEV 1.0 is normal in:Bronchial asthmaScoliosisChronic bronchitisAcute bronchitis  <response>: Vital capacity and timed vital capacity TVC are reduced greatly in respiratory diseases like Asthma, Emphysema, Pneumonia, etc.In scoliosis, vital capacity is reduced, but TVC is normal. 