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Previous issue date: 2013-11-29 / Conselho Nacional de Desenvolvimento Cient?fico e Tecnol?gico / obesity affects rightly functional capacity diminishing the
cardiovascular system efficiency and oxygen uptake (VO2). Field tests, such as,
Incremental Shuttle Walking Test (ISWT) and Six Minute Walk Test (6MWT) has
been employed as alternative of Cardiopulmonary Exercise Test (CPX), to functional
assessing for conditions which transport of oxygen to peripheral is diminished.
Nevertheless, the knowing about metabolic variables response in real time and it
comparing among different maximal and submaximal tests in obese is absent. Aim:
to compare cardiopulmonary, metabolic response during CPX, ISWT and 6MWT and
to analyse it influence of adiposity markers in obese. Material e Method: crosssectional,
prospective study. Obese included if: (BMI>30Kg/m2; FVC>80%), were
assessed as clinical, anthropometric (BMI, body adiposity index-BAI, waist-WC, hip-
HC and neck-NC circumferences) and spirometry (forced vital capacity-FVC, Forced
expiratory volume-1?second-FEV1, maximal voluntary ventilation-MVV) variables.
Obese performed the sequence of tests: CPX, ISWT and 6MWT. Throughout tests
was assessed breath-by-breath by telemetry system (Cortex-Biophysik-Metamax3B)
variables; oxygen uptake on peak of activity (VO2peak); carbon dioxide production
(VCO2); Volume Expiratory (VE); ventilatory equivalents for VO2 (VE/VO2) and CO2
(VE/VCO2); respiratory exchange rate (RER) and perceived effort-Borg6-20). Results:
15 obese (10women) 39.4+10.1years, normal spirometry (%CVF=93.7+9.7) finished
all test. They have BMI (43.5+6.6kg/m2) and different as %adiposity
(BAI=50.0+10.5% and 48.8+16.9% respectively women and men). Difference of
VO2ml/kg/min and %VO2 were finding between CPX (18.6+4.0) and 6MWT
(13.2+2.5) but not between ISWT (15.4+2.9). Agreement was found for ISWT and
CPX on VO2Peak (3.2ml/kg/min; 95%; IC-3.0 9.4) and %VO2 (16.4%). VCO2(l/min)
confirms similarity in production for CPX (2.3+1.0) and ISWT (1.7+0.7) and difference
for 6MWT (1.4+0.6). WC explains more the response of CPX and ISWT than other
adiposity markers. Adiposity diminishes 3.2% duration of CPX. Conclusion: ISWT
promotes similar metabolic and cardiovascular response than CPX in obese. It
suggesting that ISWT could be useful and reliable to assess oxygen uptake and
functional capacity in obese / a obesidade afeta diretamente a capacidade funcional diminuindo a
efici?ncia do sistema cardiovascular e o consumo de oxig?nio (VO2). Testes de
campo, tais como, Incremental Shuttle Walking Test (ISWT) e Teste de Caminhada
de 6 minutos (TC6M) tem sido empregados como alternativa ao Teste de Esfor?o
Cardiopulmonar (TECP), para avalia??o funcional de patologias que levam a
diminui??o da transfer?ncia de oxig?nio ? periferia, entretanto, pouco ? conhecido da
respostas fisiol?gicas de vari?veis metab?licas e ventilat?rias em obesos durante
teste incremental de exerc?cio. Objetivo: analisar e comparar as respostas
cardiopulmonares, metab?licas (VO2pico-consumo de oxig?nio-pico e VCO2-produ??o
de di?xido de carbono) e de esfor?o percebido nos testes subm?ximos de esfor?o
(ISWT e TC6M) com o TECP. Materiais e M?todo: estudo transversal, prospectivo,
onde foi avaliada a concord?ncia de dois diferentes testes de campo (TC6M e ISWT)
com o TECP. Crit?rios de Inclus?o (IMC > 30Kg/m2; CVF > 80%). Os participantes
realizaram avalia??o cl?nica, antropom?trica (IMC, IAC-?ndice de adiposidade
corporal, RCQ-rela??o cintura-quadril, CQ-circunfer?ncia quadril, CC-circunfer?ncia
cintura, CP-circunfer?ncia pesco?o) e espirom?trica (CVF-capacidade vital for?ada,
VEF1-volume expirat?rio for?ado no 1? segundo, VVM-ventila??o volunt?ria m?xima).
Obesos realizaram em momentos distintos a sequ?ncia de testes (TECP, TC6M e
ISWT). Medidas ventilat?rias (VE-ventila??o por minuto, VE/VO2-equivalente
ventilat?rio de oxig?nio, VE/VCO2-equivalente ventilat?rio de di?xido de carbono,
RER-raz?o de troca gasosa) e metab?licas (VO2 e VCO2) dos gases expirados
(breath-by-breath) com sistema de telemetria (Cortex-Biophysik-Metamax3B), al?m
das vari?veis de percep??o de esfor?o (fadiga e dispneia-Borg6-20) foram tomadas.
Resultados: os participantes eram adultos jovens (39.4+10.1 anos), com altos
percentuais de adiposidade corporal (IAC=50.0+10.5%-mulheres; IAC=48.8+16.9%-
homens) e IMC=43.5+6.6. Observou-se que IMC e CC justificaram isoladamente
56% e 48% da vari?ncia da dura??o do TECP. Diferen?as de VO2ml/kg/min e %VO2
nos obesos foram encontradas apenas entre TECP e TC6M (%VO2 p=0.008 em
mulheres e p=0.01 nos homens), sendo os valores de VO2PICO de 18.6+4.0ml/kg/min
no TECP; 15.4+2.9 no ISWT e 13.2+2.5 no TC6M. O Bland-Altman evidenciou
concord?ncia entre TECP e o ISWT no VO2PICO (3.2ml/kg/min; 95%; IC -3.0 9.4) e
no %VO2 (16.4%; 95%; -23.6 56.4). A an?lise da produ??o de CO2(l/min)
xiv
confirmou uma maior produ??o ao final do TECP (2.3+1.0), seguido do ISWT
(1.7+0.7) e TC6M (1.4+0.6), por?m com diferen?as apenas entre o TECP e TC6M
(p<0.01). Conclus?o: apesar de considerado um teste de esfor?o subm?ximo, o
ISWT promove respostas metab?licas e cardiovasculares semelhantes ao TECP na
popula??o obesa, sugerindo que o ISWT pode ser uma boa op??o para avaliar a
capacidade funcional de obesos
| Identifer | oai:union.ndltd.org:IBICT/oai:repositorio.ufrn.br:123456789/16746 |
| Date | 29 November 2013 |
| Creators | Cruz, Nicole Soares Oliver |
| Contributors | CPF:44456042400, http://lattes.cnpq.br/4056770607573210, Silva, Audrey Borghi, CPF:87947986991, SILVA, Audrey Borghi., Vieira, Wouber Herickson de Brito, CPF:97028169472, http://lattes.cnpq.br/7943769688281372, Bruno, Selma Sousa |
| Publisher | Universidade Federal do Rio Grande do Norte, Programa de P?s-Gradua??o em Fisioterapia, UFRN, BR, Movimento e Sa?de |
| Source Sets | IBICT Brazilian ETDs |
| Language | Portuguese |
| Detected Language | Portuguese |
| Type | info:eu-repo/semantics/publishedVersion, info:eu-repo/semantics/masterThesis |
| Format | application/pdf |
| 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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