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Previous issue date: 2017-06-19 / Introdu??o: A capacidade funcional ? prejudicada pela obesidade e pode ser avaliada
por testes f?sicos que examinam a a??o sincronizada dos sistemas cardiovascular,
respirat?rio e musculoesquel?tico. O comportamento cardiovascular e respirat?rio,
medido por FC (frequ?ncia card?aca) e cin?tica de oxig?nio, por exemplo, no per?odo
de recupera??o do exerc?cio tem mostrado ser um bom indicador de sa?de
cardiovascular, reestabelecimento de reservas energ?ticas e equil?brio auton?mico
em saud?veis e cardiopatas. Entretanto, n?o se conhece o comportamento da cin?tica
de oxig?nio e da FCR (FC de recupera??o) em obesos sem doen?a card?aca
diagnosticada. Objetivo: Analisar o comportamento da cin?tica de oxig?nio e FCR e
ap?s teste de esfor?o cardiopulmonar em obesas. Materiais e M?todos: Estudo
observacional, transversal com 32 volunt?rias, analisadas no teste de esfor?o
cardiopulmonar (TECP), alocadas por conveni?ncia nos grupos obesidade (GO,
N=16) e n?o obesas (GNOB, N=16). Realizadas avalia??es cl?nica, antropom?trica e
de adiposidade e espirom?trica inicial. O TECP cl?nico padr?o foi realizado usando
protocolo de rampa individualizado, sendo tomadas as medidas ventilat?rias e
metab?licas (breath-?by-?breath), com registro das vari?veis de interesse no repouso
(2?) e 5? iniciais de recupera??o (3 minutos-?recupera??o ativa, 2 minutos-?recupera??o
passiva). A cin?tica de recupera??o foi calculada por modelo de regress?o linear da
curva de decl?nio do VO2 durante o primeiro minuto de recupera??o em fun??o do
tempo (T? e VO2/t) e a frequ?ncia FCR obtida pela diferen?a da FC no pico do teste e
a FC no primeiro minuto de recupera??o. Resultados: os grupos foram homog?neos
quanto ? idade, altura e medidas espirom?tricas. Diferen?as significativas foram
encontradas na FCR (p=0,041) e VO2pico (p<0,001) entre os grupos. A cin?tica do VO2
apresentou diferen?a significativa no T? de VO2 (p=0,003) e VO2/t (p=0,041).
Observou-?se que o VO2pico (0,59), IMC (-?0,16) e CQ (0,18) justificam a vari?ncia do
VO2/t em 72%. Foi atestada uma colinearidade negativa entre as medidas de
adiposidade de CQ e IMC. Conclus?o: Obesos jovens t?m respostas lentificadas da
cin?tica de recupera??o do VO2 e FC em rela??o a n?o obesas, sugerindo que obesos
t?m preju?zo na restaura??o dos estoques energ?ticos ou circulat?rios no m?sculos
perif?ricos e disfun??o auton?mica, e que tais altera??es podem contribuir para a
instala??o de doen?as cardiovasculares e o aumento da taxa de morbi-?mortalidade
nesta popula??o. / 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 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?, 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 VO2peak (p<0,001) between the
groups. The oxygen kinetics presented a significant difference in the T? of VO2
(p=0,003) and VO2/t (p=0,041). It was observed that VO2peak (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 autonomic dysfunction, and it?s may contribute to the establishment of
cardiovascular diseases, and increased morbidity and mortality rate in this population.
| Identifer | oai:union.ndltd.org:IBICT/oai:repositorio.ufrn.br:123456789/24069 |
| Date | 19 June 2017 |
| Creators | Lima, Davi Fialho Silva |
| Contributors | 44456042400, Ferezini, Joceline Cassia, 16793121898, Campos, Shirley Lima, 00780302427, Bruno, Selma Sousa |
| Publisher | PROGRAMA DE P?S-GRADUA??O EM FISIOTERAPIA, UFRN, Brasil |
| Source Sets | IBICT Brazilian ETDs |
| Language | Portuguese |
| Detected Language | English |
| Type | info:eu-repo/semantics/publishedVersion, info:eu-repo/semantics/masterThesis |
| Source | reponame:Repositório Institucional da UFRN, instname:Universidade Federal do Rio Grande do Norte, instacron:UFRN |
| Rights | info:eu-repo/semantics/openAccess |
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