ABSTRACT
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).
","abstract_html":"<p>ABSTRACT</p> <p>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).</p> <p>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.</p> <p>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.</p> <p>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). </p>","abstract_has_math":false,"creators":["McMorries, Rebecca M"],"institution":null,"degree_name":"Master of Science - Kinesiology","degree_level":"Thesis","degree_discipline":"Kinesiology and Health Science","degree_department":null,"school":null,"contributors":["Mark Faries","Eric Jones","Dustin Joubert"],"advisors":[],"committee_chairs":[],"committee_members":[],"year":2016,"date_issued":"2016-05-09T07:00:00Z","date_published":"2016-05-09T07:00:00Z","updated_at":"2026-07-24T04:30:03Z","subjects":["lactate threshold","lactate threshold testing","bsx insight","muscle oxygenation","Exercise Science","Sports Sciences"],"languages":[],"rights":[],"rights_urls":[],"identifier_entries":[]},"links":{"outbound_url":"https://scholarworks.sfasu.edu/etds/42","outbound_label":"Repository record","outbound_source":"dc:identifier"},"metadata_groups":[{"id":"people","label":"People","entries":[{"key":"dc:contributor","label":"Contributor","values":["Mark Faries","Eric Jones","Dustin Joubert"]},{"key":"dc:creator","label":"Author","values":["McMorries, Rebecca M"]}]},{"id":"academic_context","label":"Academic Context","entries":[{"key":"dc:date.available","label":"Dc Date Available","values":["2016-05-09T07:00:00Z"]},{"key":"thesis:degree_discipline","label":"Discipline","values":["Kinesiology and Health Science"]},{"key":"thesis:degree_level","label":"Degree Level","values":["Thesis"]},{"key":"thesis:degree_name","label":"Degree Name","values":["Master of Science - Kinesiology"]}]},{"id":"subjects_keywords","label":"Subjects and Keywords","entries":[{"key":"dc:subject","label":"Dc Subject","values":["lactate threshold","lactate threshold testing","bsx insight","muscle oxygenation","Exercise Science","Sports Sciences"]}]},{"id":"identifiers","label":"Identifiers","entries":[{"key":"dc:identifier","label":"Identifier","values":["https://scholarworks.sfasu.edu/etds/42"]}]},{"id":"additional","label":"Additional Metadata","entries":[{"key":"dc:description.abstract","label":"Abstract","values":["ABSTRACT
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).
"]},{"key":"dc:title","label":"Title","values":["STOP THE PRICKS: A VALIDATION STUDY OF A NONINVASIVE LACTATE THRESHOLD DEVICE"]}]}],"canonical_facts":{"dc:contributor":["Mark Faries","Eric Jones","Dustin Joubert"],"dc:creator":["McMorries, Rebecca M"],"dc:date.available":["2016-05-09T07:00:00Z"],"dc:description.abstract":["ABSTRACT
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).
"],"dc:identifier":["https://scholarworks.sfasu.edu/etds/42"],"dc:subject":["lactate threshold","lactate threshold testing","bsx insight","muscle oxygenation","Exercise Science","Sports Sciences"],"dc:title":["STOP THE PRICKS: A VALIDATION STUDY OF A NONINVASIVE LACTATE THRESHOLD DEVICE"],"thesis:degree_discipline":["Kinesiology and Health Science"],"thesis:degree_level":["Thesis"],"thesis:degree_name":["Master of Science - Kinesiology"]},"updated_at":"2026-07-24T04:30:03Z"}