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Stage length, spline function and lactate minimum swimming speed.

L Ribeiro1, P Balikian, P Malachias

  • 1Faculty of Physical Education, Campinas State University, Campinas, SP, Brazil. luizfribeiro@zipmail.com.br

The Journal of Sports Medicine and Physical Fitness
|November 20, 2003
PubMed
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The lactate minimum test (LMT) accurately assesses swimmers' maximal lactate steady-state speed (MLSS-S), with longer 300m stages providing more reliable predictions than 200m stages.

Area of Science:

  • Exercise Physiology
  • Sports Science
  • Swimming Performance Analysis

Background:

  • The lactate minimum test (LMT) is increasingly utilized for evaluating running performance.
  • Assessing swimming performance using LMT requires understanding the impact of different test parameters.

Purpose of the Study:

  • To analyze how varying stage lengths and determination methods influence lactate minimum swimming speed (LMS).
  • To evaluate the validity of LMS for predicting maximal lactate steady-state speed (MLSS-S) in swimmers.

Main Methods:

  • Twelve male swimmers underwent 4-5 LMT evaluations over two weeks.
  • LMS was determined using simple visualization (SV) and spline function (SF) methods across 200m and 300m stages.
  • MLSS-S was measured during constant 2000m efforts.

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Main Results:

  • LMS values from 200m and 300m stages were not significantly different between SV and SF methods.
  • LMS derived from 200m stages was significantly higher than MLSS-S.
  • Strong correlations were observed between studied speeds and lactate minimum values; LMT300 showed comparable lactate levels to LMT200.

Conclusions:

  • LMS is not significantly affected by different stage lengths or determination methods.
  • The LMT300 protocol appears more accurate for predicting MLSS-S in swimmers.
  • LMT is a suitable method for evaluating swimming performance.