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Previous issue date: 2016-02-29 / The validity of the double product (DP) response to estimate the anaerobic threshold (AT), an
alternative and less costly method has not been tested in patients with type 2 diabetes (T2D).
Therefore, the objective of this study is test the reliability of AT identification by the double
product breakpoint (DPBP) in T2D. Nine subjects with type 2 diabetes (T2D = 9) and ten
non-diabetic (ND = 10) underwent an incremental test on a cycle ergometer. Heart rate (HR),
blood pressure (BP) and exhaled gases were measured at the end of each stage. The
ventilatory threshold (VT), lactate threshold (LT) and DPBP were considered an exercise
intensity below which a disproportional increase of ventilation, [LAC] and DP, respectively,
was observed in relation to linear increase in workload. No differences were identified
between the workload, HR, and oxygen consumption (VO2) corresponding to the AT
identified by VT, LT and DPBP. Further, for the T2D group was identified a high and
significant level of reliability between DPBP and VT for workload (ICC = 0.84), FC (ICC =
0.71) and VO2 (ICC = 0.83) and between DPBP and LT for workload (ICC = 0.79) and FC
(ICC = 0.82). Similar reliability was identified for the ND group between DPBP and VT for
workload (ICC = 0.92), HR (ICC = 0.88) and VO2 (ICC = 0.84) and between DPBP and LT
for workload (ICC = 0.70). It concludes that the DPBP is reliable to estimate the AT and it is
highly associated with VT and LT in T2D and ND individuals. / A validade da resposta do duplo produto (DP) para estimar o limiar anaer??bio (LAn), um
m??todo alternativo e menos oneroso, ainda n??o foi testado em indiv??duos com diabetes tipo 2
(DM2). Portanto, o objetivo deste estudo ?? verificar se ?? poss??vel identificar o LAn pelo ponto
de inflex??o do duplo produto (DPBP) em indiv??duos DM2. Nove sujeitos com DM2 (DM2 =
9) e dez n??o diab??ticos (ND = 10) foram submetidos a um teste incremental em cicloerg??metro.
Frequ??ncia card??aca (FC), press??o arterial (PA) e gases expirados foram
mensurados ao final de cada est??gio. O limiar ventilat??rio (LV), limiar de lactato (LL) e o
DPBP foram considerados a intensidade do exerc??cio abaixo a um aumento desproporcional
da ventila????o, [LAC] e DP, respectivamente, s??o observados em rela????o ao aumento linear da
carga de trabalho. N??o foram identificadas diferen??as entre a carga de trabalho, FC, e
consumo de oxig??nio (VO2) correspondente ao LAn identificado pelo LV, LL e DPBP. Al??m
disso, para o grupo DM2 foi identificado um alto e significante n??vel de confiabilidade entre
DPBP e LV para carga de trabalho (ICC = 0,84), FC (ICC = 0,71) e VO2 (ICC = 0,83) e entre
o DPBP e LL para carga de trabalho (ICC = 0,79) e FC (ICC = 0,82). Confiabilidade
semelhante foi identificado para o grupo ND entre DPBP e LV para carga de trabalho (ICC =
0,92), FC (ICC = 0,88) e VO2 (ICC = 0,84) e entre o DPBP e LL para carga de trabalho (ICC
= 0,70). Conclui-se que o DPBP permitiu a predi????o do LAn, devido ao alto n??vel de
confiabilidade com os m??todos tradicionais, LV e LL.
| Identifer | oai:union.ndltd.org:IBICT/oai:bdtd.ucb.br:tede/2069 |
| Date | 29 February 2016 |
| Creators | Silva, Caio Victor de Sousa |
| Contributors | Sim??es, Herbert Gustavo |
| Publisher | Universidade Cat??lica de Bras??lia, Programa Strictu Sensu em Educa????o F??sica, UCB, Brasil, Escola de Sa??de e Medicina |
| Source Sets | IBICT Brazilian ETDs |
| Language | Portuguese |
| Detected Language | English |
| Type | info:eu-repo/semantics/publishedVersion, info:eu-repo/semantics/masterThesis |
| Format | application/pdf |
| Source | reponame:Biblioteca Digital de Teses e Dissertações da UCB, instname:Universidade Católica de Brasília, instacron:UCB |
| Rights | info:eu-repo/semantics/openAccess |
| Relation | 6095716513072507778, 500, 500, 600, 3870802503144686128, 5178284805913411594 |
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