Arbitrary control of respiratory movements during thoracic and abdominal respiration

12 young men after preliminary instruction on thoracic and abdominal respiration reproduced specified respiratory volumes with only thoracic or only abdominal movements with the use of visual control on pneumogram. It was revealed that effectiveness of volitional suppression of thoracic and abdominal movements becoming higher in the process of split breathing training. Persons under test were more successful in suppression of thoracic movements in comparison with abdominal. Visual control adjusts effectiveness of volitional suppression of abdominal respiratory movements and does not influence the suppression of thoracic movements.