Validity and reliability of incremental test to determine the anaerobic threshold in swimming rats

Autor(es)

Beck, Wladimir R. ^[1] ; Campesan, Yuri S. ^[1] ; Gobatto, Claudio A. ^[1]

Afiliação do(s) autor(es)

^[1] Univ Estadual Campinas, Dept Sport Sci, Sch Appl Sci, Lab Appl Sport Physiol, BR-13484350 Sao Paulo - Brazil

• Tipo de documento: Artigo Científico
• Fonte: INTERNATIONAL JOURNAL OF APPLIED EXERCISE PHYSIOLOGY; v. 4, n. 1, p. 25-33, APR 2015.
• Citações Web of Science: 2

Resumo

The organic and metabolic consequences of physical exercise are critically modulated depending of the effort intensity and volume. Nevertheless, most of the protocols employed for objectively determine the individual exercise intensities for rats are impractical or unadvisable for various experimental designs. The aim of this study was to individually determine the anaerobic threshold intensity (iAnT) and the maximal lactate steady state (MLSS, gold standard procedure) intensities using a single incremental swimming test for rats, verifying it validity and reliability. Eleven male Wistar rats were submitted twice (48 hours of interval) to an incremental test with overloads from 3% of body mass (% bm), increments of 0.5% bm and stages of 5 min. From blood lactate concentration and % bm data were constructed two linear regressions to determine iAnT. Then, all of the animals performed the MLSS procedure based on iAnT. Comparing iAnT test and re-test were found significant intraclass correlation (r = 0.67; p = 0.01), no significant difference (p = 0.91), coefficient of variation of 4.04% and effect size of 0.02, beyond good agreement, precision and accuracy attested by Bland-Altman plots (bias of 0.010). Furthermore, iAnT was not different from MLSS intensity. A single incremental swimming test comprises a high applicable, valid and reliable tool for objectively and individually determines exercise intensity of swimming rats. (AU)

• Processo FAPESP: 09/08535-5 - Padronização e validação de testes aeróbios e anaeróbios em condições de campo e laboratório, utilizando modelos livre, atado e semi-atado, em corredores fundistas e velocistas
• Beneficiário: Claudio Alexandre Gobatto
• Modalidade de apoio: Auxílio à Pesquisa - Regular
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• Beneficiário: Wladimir Rafael Beck
• Modalidade de apoio: Bolsas no Brasil - Mestrado
• Processo FAPESP: 12/20501-1 - Respostas moleculares frente à natação contínua e intervalada e à melatonina exógena em ratos: sinalizadores celulares do metabolismo intermediário e de vias inflamatórias e de estresse oxidativo
• Beneficiário: Claudio Alexandre Gobatto
• Modalidade de apoio: Auxílio à Pesquisa - Regular
• Processo FAPESP: 11/13226-1 - RESPOSTA ERGOGÊNICA DA MELATONINA NO NADIR E ACROFASE DA ATIVIDADE ESPONTÂNEA E SUAS CONSEQUÊNCIAS NA ATIVIDADE DA VIA IKK/NF-kB E DANO TECIDUAL MUSCULAR
• Beneficiário: Wladimir Rafael Beck
• Modalidade de apoio: Bolsas no Brasil - Doutorado