Date of Award

Spring 5-9-2016

Degree Type


Degree Name

Master of Science - Kinesiology


Kinesiology and Health Science

First Advisor

Mark Faries

Second Advisor

Eric Jones

Third Advisor

Dustin Joubert



Purpose: The aim of this study is to assess the validity of a noninvasive lactate threshold device (NID) to determine lactate threshold heart rate (LTHR) and aerobic threshold heart rate (AeTHR).

Methods: Twenty-one recreational athletes completed a personalized graded exercise test on a treadmill. All participants wore the noninvasive device and blood lactate samples were taken at the end of 3-minute stages. Lactate threshold heart rate and aerobic threshold heart rate were then calculated using four traditional methods and compared against the same heart rate values calculated by the device.

Results: No significant differences were found in lactate threshold heart rate and the aerobic threshold heart rate between the noninvasive device and four traditional lactate methods.

Conclusions: This study provides preliminary support for the validity of the NID for estimation of LTHR (4mmol), but weaker support for validity at AeTHR (2mmol).

Creative Commons License

Creative Commons License
This work is licensed under a Creative Commons Attribution-Noncommercial-No Derivative Works 4.0 License.



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