Exploration of an Inflection Point of Ventilation Parameters with Anaerobic Threshold Using Strucchange

Autor: Takenori Aida, Akira Shionoya, Hirofumi Nonaka, Kouji Hayami, Hisashi Uchiyama, Masahiro Nagamori, Satoshi Ohhashi, Mai Kobayashi, Tsugumi Takayama, Shinji Kimura
Jazyk: angličtina
Rok vydání: 2022
Předmět:
Zdroj: Sensors, Vol 22, Iss 7, p 2682 (2022)
Druh dokumentu: article
ISSN: 1424-8220
DOI: 10.3390/s22072682
Popis: (1) Background: When measuring anaerobic work threshold (AT), the conventional V-slope method includes the subjectivity of the examiner, which cannot be eliminated completely. Therefore, we implemented an engineering method using strucchange to objectively search for the inflection point of AT. (2) Methods: Seventeen subjects (15 men and 2 women) were included in the study. The subjects rode an ergometer and performed a ramp load test for 18 min and 30 s. (3) Results: In VE (Ventilation), 11 out of 12 subjects had the same results with 95% confidence intervals for the AT by the strucchange and respiratory metabolic apparatus. In VCO2 (Carbon dioxide emissions), 9 out of 12 subjects had the same results with 95% confidence intervals for the AT with the strucchange and respiratory metabolic apparatus. In VE, 3 out of 12 subjects showed the same results for respiratory metabolic analysis and the AT by the V-slope method. In VCO2, 3 out of 12 subjects showed the same results for the respiratory metabolic analysis and AT by the V-slope method in VCO2. (4) Conclusions: Strucchange was more objective and significant in identifying the AT than the V-slope method.
Databáze: Directory of Open Access Journals
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