Challenging the Accuracy of a Single-test Lactate Threshold Protocol in Collegiate Rowers

Area of Science:

• Sports Physiology
• Exercise Science
• Rowing Performance

Background:

• Elite rowers utilize lactate threshold (LT) to establish training intensities for maximizing training volume.
• Conventional methods often determine LT using a simultaneous maximal oxygen uptake (VO2max) test.
• This combined test may lack accuracy due to large power increments.

Purpose of the Study:

• To evaluate the accuracy of a simultaneous LT/VO2max test for estimating LT in rowers.
• To challenge the validity of standard testing protocols in determining precise LT values.

Main Methods:

• Twenty collegiate rowers (16 female, 4 male) underwent two distinct LT tests.
• Test 1 involved an incremental VO2max protocol with varying wattage increments for men and women.
• Test 2 used a modified incremental protocol with smaller wattage steps, with blood lactate measured in both.

Main Results:

• The average difference between the two LT tests was 1.15 ± 13.4W, not statistically significant.
• However, the average absolute difference was 9.95 ± 8.80W, indicating a statistically significant deviation.
• These findings suggest variability in LT determination between the two methods.

Conclusions:

• A second, incremental test is recommended for the most precise LT determination in rowers.
• Accurate LT is vital for rowers who depend on it to set training intensities.
• This study highlights the need for refined testing protocols for optimal training prescription.