Prediction equations for spirometry in four- to six-year-old children.

Objective: To generate prediction equations for spirometry in 4- to 6-year-old children.

Methods: Forced vital capacity, forced expiratory volume in 0.5s, forced expiratory volume in one second, peak expiratory flow, and forced expiratory flow at 25-75% of the forced vital capacity were assessed in 195 healthy children residing in the town of Sete Lagoas, state of Minas Gerais, Southeastern Brazil.

[Pulmonary function of children with acute leukemia in maintenance phase of chemotherapy].

Objective:: The aim of this study was to assess the pulmonary function of children with acute leukemia.

Methods:: Cross-sectional observational analytical study that enrolled 34 children divided into groups A (17 with acute leukemia in the maintenance phase of chemotherapy) and B (17 healthy children). The groups were matched for sex, age and height.

Feasibility and reproducibility of spirometry and inductance plethysmography in healthy Brazilian preschoolers.

Rationale: Preschoolers show peculiarities that reinforce the importance of assessing their pulmonary function. However, there are few data on the success rate and between-occasions reproducibility of pulmonary function tests in preschoolers, particularly in the Brazilian population.

Objective: To assess the success rate and between-occasions reproducibility of the variables obtained by spirometry and respiratory inductive plethysmography in healthy children aged 4-6 years.

Changes in breathing pattern and thoracoabdominal motion after bariatric surgery: a longitudinal study.

This study evaluated the breathing pattern of 30 obese patients [32 ± 9 years old; body mass index (BMI): 42.72 ± 4.10 kg/m(2)] before and after bariatric surgery and compared them with 30 control individuals (31 ± 8 years old, BMI: 21.

Breathing pattern and thoracoabdominal motion in healthy individuals: influence of age and sex.

Objective: to describe the breathing pattern and thoracoabdominal motion of healthy individuals, taking age and sex into consideration.

Methods: the study included 104 individuals aged 20 to 39, 40 to 59, and 60 to 80 years (41 males and 63 females), with normal body mass index and spirometric values. Participants were evaluated at rest in the supine position, by means of respiratory inductive plethysmography.

Ventilatory and muscular assessment in healthy subjects during an activity of daily living with unsupported arm elevation.

Introduction: Patients with chronic obstructive pulmonary disease (COPD) report dyspnea when performing activities of daily living (ADLs) with elevated upper limbs. To elucidate the determinants of dyspnea, it is important to study the changes in the respiratory pattern of these patients and the electromyographic activity of their accessory muscles of respiration during ADLs. In the literature, there are no reports of a normative parameter, therefore it is necessary to study how these variables behave in healthy subjects.

[Effects of breathing exercises on breathing pattern and thoracoabdominal motion after gastroplasty].

Objective: To evaluate breathing pattern and thoracoabdominal motion during breathing exercises.

Methods: Twenty-four patients with class II or III obesity (18 women; 6 men) were studied on the second postoperative day after gastroplasty. The mean age was 37 +/- 11 years, and the mean BMI was 44 +/- 3 kg/m(2).

Prone position and reduced thoracoabdominal asynchrony in preterm newborns.

Objective: To assess the effect of prone and supine positions on breathing pattern variables, thoracoabdominal motion and peripheral oxygen saturation of hemoglobin of premature newborn infants recovering from respiratory distress syndrome, while breathing spontaneously and in rapid eye movement sleep.

Methods: This was a quasi-experimental study. Twelve preterms weighing > 1,000 g at enrollment were studied in both positions, in random order.