LTANLocal Time Ascending Node
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In recent years, great attention has been devoted to the lactate minimum test (LMT) for LTAN determination (Simoes et al., 2009; Sotero et al., 2009).
Despite of great attention for this protocol, others (Junior et al., 2001; Simoes et al., 2003; Simoes et al., 1999) focused on simpler alternative methods for LTAN prediction.
(Simoes et al., 1999) reported the lowest blood glucose (BGl) as a good predictor of individual LTAN and LMI during track tests in endurance runners, although the authors point out that this new methodology must be extensively examined.
(Edge et al., 2005) showed that 5-weeks high intensity training (120%-140% of LTAN) improves repeated-sprint ability (5 X 6-s sprints, every 30 s) more than moderate intensity training (85%-95% of LTAN).
Even with little time spent at intensities above LTAN, the aerobic training of the present study may have caused higher anaerobic energy supply during Wingate test.
The LMT has been increasingly used in athletic evaluation, because it is an objective, rapid, and independent method of the muscle glycogen content for assess the LTAN during running.
Once blood lactate testing is not always possible due to lack of equipment, great attention has been devoted to alternative methods for LTAN assessment (Dumke et al., 2006; Simoes et al., 1999; Van Schuylenbergh et al., 2004).