ABSTRACT
BACKGROUND: Flutter VRP1, Shaker, and Acapella are devices that combine positive expiratory pressure (PEP) and oscillations. OBJECTIVES: To compare the mechanical performance of the Flutter VRP1, Shaker, and Acapella devices. METHODS: An experimental platform and a ventilator, used a flow generator at 5, 10, 15, 20, 26, and 32 L/min, were employed at angles of -30°, 0°, and +30° to evaluate Flutter VRP1 and Shaker, whereas Acapella was adjusted at intermediate, higher, and lower levels of resistance, including positive expiratory pressures (PEP) along with air outflow rates and oscillation frequencies. RESULTS: When the relationships between pressure amplitudes of all air flows were analyzed for the 3 devices at low and intermediate pressures levels, no statistically significant differences were observed in mean pressure amplitudes between Flutter VRP1 and Shaker devices. However, both devices had different values from Acapella, with their pressure amplitude values being higher than that of Acapella (P = .04). There were no statistically significant differences in PEP for the 3 angles or marks regarding all air flows. The expected relationships between variables were observed, with increases in PEP, compared to those of air flows and resistance. Nevertheless, there was a statistically significant difference in frequency of oscillation between these devices and Acapella, whose value was higher than those of Flutter VRP1 and Shaker devices (P = .002). At intermediate pressure levels, the patterns were the same, in comparison to low pressures, although the Acapella device showed frequencies of oscillation values lower than those of Flutter VRP1 and Shaker (P < .001). At high pressures, there were no statistically significant differences among the 3 devices for frequency of oscillations. CONCLUSIONS: The Flutter VRP1 and Shaker devices had a similar performance to that of Acapella in many aspects, except for PEP.
Subject(s)
High-Frequency Ventilation/instrumentation , Mechanical Phenomena , Positive-Pressure Respiration , Humans , Mucus , PressureABSTRACT
As assimetrias posturais são alterações comuns encontradas tanto em indivíduos normais quanto em atletas, levando à ineficiência do gesto esportivo. O objetivo deste estudo foi correlacionar o ângulo axilar e a assiemtria de ombro entre homens e mulheres e comparar estas assiemtrias entre os sexos. Foram avaliados 44 estudantes da graduação do UNITRI, de ambos os sexos 22 homens e 22 mulheres, na faixa etária entre 18 e 25 anos de idade, que respeitaram os critérios de inclusão. As imagens coletadas foram transferidas para um computador onde foi realizada a quantificação angular pela Biofotogrametria Computadorizada, pelo aplicativo ALCimage 2.1. Para o cálculo dos ângulos referentes às assimetrias de ombro e ângulo axilar, foram desmarcados vértices, formando-se dois t
Subject(s)
Male , Female , Adolescent , Adult , Shoulder/physiology , Photogrammetry , Physical Therapy Specialty , Posture/physiologyABSTRACT
BACKGROUND: It is possible that obesity could lead to pulmonary restriction with decreasing lung volumes. However, controversies about this restriction and its etiology still exist. Thus, the purpose of this report was to evaluate the effects of body weigh excess on spirometry, on three different body positions, evaluated by Body Mass Index (BMI), percentage of fatness and the ratio of abdominal girth to hip breadth (AG/HB). METHODS: Forty-six sedentary volunteers, with ages between 20 and 40 years, were studied and distributed on five groups, based on BMI. Skin fold thickness and ratio of abdominal girth to hip breadth (AG/HB) of the volunteers were measured. FVC, FEV1 and ratio of FEV1 to FVC were measured on three different body positions--sitting, supine and orthostatic positions. RESULTS: Comparing the values measured and predicted between the groups, no difference was detected. Comparing body positions, the supine position shows lower values than sitting and orthostatic positions (p<0.05). Associations between CVF, VEF1 e VEF1/CVF values and BMI, percentage of fatness and ratio of AG/HB were not found. CONCLUSIONS: Spirometric values from obese people are into normality range and decrease on the supine position.
Subject(s)
Obesity/physiopathology , Posture/physiology , Spirometry , Adult , Body Mass Index , Female , Humans , Male , Pulmonary Ventilation , Skinfold Thickness , Waist-Hip RatioABSTRACT
OBJETIVO: Alguns autores demonstraram que a obesidade gera restrição pulmonar, levando a uma redução dos volumes pulmonares. Entretanto, ainda existem controvérsias acerca da existência dessa restrição e do possível mecanismo responsável por essa alteração. Frente a isso, esse estudo teve como objetivo avaliar a influência do excesso de peso corporal na espirometria, em três diferentes posições corporais, avaliado pelo índice de Massa Corpórea (IMC), percentual de gordura e relação cintura/quadril. MÉTODOS: Quarenta e seis universitários sedentários, com idades entre 20 e 40 anos, foram avaliados e distribuídos em cinco grupos, de acordo com o IMC. Os voluntários foram submetidos ao exame físico e à mensuração das pregas cutâneas e da circunferência da cintura e do quadril. CVF, VEF1 e VEF1/CVF foram avaliados em três diferentes posições - sentado, deitado e em pé. RESULTADOS: Quando comparados os valores obtidos e previstos entre os grupos, nenhuma diferença estatisticamente significante foi detectada. Quando comparadas as posições corporais, a posição deitada apresentou valores menores que as posições sentado e em pé (p<0,05).Não foram observadas correlações entre os valores de CVF, VEF1 e VEF1/CVF e IMC, percentual de gordura e RC/Q. CONCLUSÕES: Os valores espirométricos dos obesos estão dentro da faixa de normalidade e diminuem quando estes assumem a posição deitada.