| Full text | |
| Author(s): |
Beck, W. R.
;
de Araujo, G. Gomes
;
Gobatto, C. A.
Total Authors: 3
|
| Document type: | Journal article |
| Source: | COMPARATIVE EXERCISE PHYSIOLOGY; v. 8, n. 2, p. 4-pg., 2012-01-01. |
| Abstract | |
The lactate minimum test (LMT) is a useful protocol for determining the intensity corresponding to the maximal lactate steady state. Nevertheless, different methods to determine LMT variables are found in the literature. The aim of this study was to analyse three different methods for determining the effort intensity (LMTi) and lactataemia (LMTLAC) corresponding to LMT. We subjected seventeen rats to LMT in a swimming ergometer, following three steps: (1) acidosis induction phase; (2) recovery of nine minutes; and (3) incremental swimming intensity phase. We determined the LMTi and LMTLAC using three methods: visual inspection (VI-non-mathematic), second order polynomial function (f(POLY) - mathematic) and spline function (f(SPL) - mathematic). Results showed no significant differences between the LMTi or LMTLAC values determined using VI (5.32 +/- 0.50% bw and 5.62 +/- 0.78 mM, respectively), f(POLY) (5.31 +/- 0.53% bw and 5.64 +/- 0.72 mM, respectively) and f(SPL) (5.32 +/- 0.54% bw and 5.59 +/- 0.76 mM, respectively). We found significant correlations between the three methods (P<0.05). We concluded that the determination of the intensity and lactataemia corresponding to LMT are not influenced by mathematic or non-mathematic methods in swimming sedentary rats. (AU) | |
| FAPESP's process: | 10/13377-7 - Effects of light and time of day of swimming exercise until exhaustion at lactate minimum intensity on biochemistry and hematologic responses of rats |
| Grantee: | Wladimir Rafael Beck |
| Support Opportunities: | Scholarships in Brazil - Master |