Banca de DEFESA: DAVI FIALHO SILVA LIMA

Uma banca de DEFESA de MESTRADO foi cadastrada pelo programa.
DISCENTE : DAVI FIALHO SILVA LIMA
DATA : 19/06/2017
HORA: 08:00
LOCAL: Auditório do Departamento de Fisioterapia
TÍTULO:

Analysis of oxygen kinetics and heart rate recovery after cardiopulmonary exercise test in obese women.

PALAVRAS-CHAVES:

obesity, oxygen uptake, heart rate, cardiopulmonary exercise test.

PÁGINAS: 78
GRANDE ÁREA: Ciências da Saúde
ÁREA: Fisioterapia e Terapia Ocupacional
RESUMO:

Introduction: Functional capacity is impaired by obesity and can be assessed by physical tests that examine a synchronized action of the cardiovascular, respiratory and musculoskeletal systems. Cardiovascular and respiratory behavior, measured by HR (heart rate) and oxygen kinetics, for example, during the period of exercise recovery has been considered as indicator of cardiovascular health, reestablishment of energy reserves and autonomic balance in healthy and patients with heart disease. However, the behavior of oxygen kinetics and HRR (recovery HR) in obese patients without diagnosed heart disease is not known. Aim: To analyze the pattern of oxygen kinetics and HRR after cardiopulmonary exercise test in obese women. Materials and Methods: a cross-sectional study with 32 volunteer obese women, analyzed in the cardiopulmonary exercise test (CPX), allocated for convenience into obesity (GO, N=16) and non-obese (GNO, N=16) group. We performed a clinical, anthropometric and adiposity and spirometry evaluation. The standard clinical CPX was assessed, (individualized ramp protocol), being done as ventilatory and metabolic measures (breath-by-breath), with a recording of interest variables at the rest (2’) and 5 initial (3' active recovery, 2'passive recovery). Oxygen kinetic after exercise was calculated by linear regression model of the decline slope of VO2 over time during the first minute of recovery (T_½,VO2/t), and the HRR obtained by the difference between HR at the peak of the test and the HR at the first minute of recovery. Results: groups were homogeneous  regarding age, height and spirometric measurements .Significant differences were found in the HRR (p=0,041) and VO_2peak (p=0,000) between the groups. The oxygen kinetics presented a significant difference in the T½ of VO₂ (p=0,003) and VO₂/t (p=0,041). It was observed that VO_2peak (0,59), BMI (-0,16) and HC (0,18) justified the variance of VO₂/t in 72%. A negative colinearity between the HC and BMI adiposity measures was attested. Conclusion: young obese has delayed response of VO₂ recovery kinetics and HRR regards no obese it suggests that obese has circulatory or reestablishment of energy reserves impairment on peripheral muscles and it’s may contribute to the establishment of cardiovascular diseases, and increased morbidity and mortality rate in this population.

MEMBROS DA BANCA:
Externo ao Programa - 2646588 - JOCELINE CASSIA FEREZINI DE SA
Presidente - 1149619 - SELMA SOUSA BRUNO
Externo à Instituição - SHIRLEY LIMA CAMPOS - UFPE