The studies were performed in seven healthy subjects (5 men and 2 women) 29–49 yr of age. The subjects had normal pulmonary function tests, and their principal anthropometric
characteristics and supine inspiratory capacity are listed in Table 1. They gave informed consent to the procedures, which conformed with the Declaration of Helsinki and were approved by the Ethics Committee of the Brussels School of Medicine.
Five subjects had previously participated in many respiratory experiments and were highly trained in relaxing their respiratory muscles at different lung volumes, but two subjects (subjects 5 and 7) had little prior experience as respiratory subjects. Before the study, these two subjects underwent several practice sessions with pairs of respiratory magnetometers (Norman H. Peterson, Boston, MA) placed on the abdomen and rib cage, during which they were coached to relax their respiratory muscles. At the time of the study, all subjects were able to produce consistent relaxation curves of the chest wall from resting end expiration [functional residual capacity (FRC)] to total lung capacity (TLC).
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Escrito por Jaqueline Sayumi Minagawa ; Érika Mourão Theodoro ; Camila Fernandes ; Cindy Lia Borges Cesarino Ferreira ; Camila Campos Guerra Hara ; Silvia Regina da Silvia Boschi , Rodrigo Souza Nilo de Araújo Aguiar ; Leandro Lazzareschi
Escrito por Diana Vieira1 , Camila Andrade2 , Anna Caroliny Pires3 , Ana Carolina Almeida4 , Rosalina Tossige Gomes5 , Marcelo Xavier6
Escrito por Mariangela Pinheiro de Lima