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Using lactate threshold to predict 5-km treadmill running performance in veteran athletes.

Jacky Forsyth¹, Dean Burt¹, Fiona Ridley¹

¹Staffordshire University, Leek Road, Stoke-on-Trent ST4 2DF, England, UK.

Biology of Sport

|November 22, 2017

Summary

The maximal deviation (Dmax) method accurately predicts 5-km running performance in veteran athletes by assessing lactate threshold, overcoming age-related declines in lactate concentration.

Keywords:

Exercise Test Lactic Acid Masters Monitoring Physiologic

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Area of Science:

Exercise Physiology
Sports Science
Biochemistry

Background:

Assessing endurance performance in veteran athletes is challenging due to age-related decreases in lactate concentration.
Traditional lactate threshold methods may be less reliable in older populations.

Purpose of the Study:

To evaluate the validity of the maximal deviation (Dmax) method for determining lactate threshold.
To compare Dmax with other lactate threshold methods for predicting 5-km running performance in veteran athletes.

Main Methods:

Veteran runners (36 total) underwent incremental exercise tests to determine lactate threshold using Dmax, log-log, visual, and 4-mmol/L methods.
Participants completed a 5-km treadmill time trial on a separate occasion.
Statistical analyses included correlation and Bland-Altman plots to assess agreement.

Main Results:

Mean treadmill velocity at Dmax was not significantly different from 5-km time trial velocity (12.2 vs. 12.1 km/h).
Dmax showed a strong correlation (r=0.92) and narrow limits of agreement with 5-km performance.
Other methods exhibited weaker correlations and wider limits of agreement.

Conclusions:

The Dmax method provides a valid measure of lactate threshold for predicting 5-km running performance in veteran athletes.
Dmax is a reliable alternative to traditional methods, unaffected by age-related changes in lactate concentration.
This method can be effectively applied to both male and female veteran runners.