Detrended fluctuation analysis to determine physiologic thresholds, investigation and evidence from incremental cycling test.

• Tác giả: Johan Cassirame, Simon Chevrolat, Esther Eustache, Lucas Garbellotto, Philippe Gimenez, Pierre-Marie Leprêtre
• Ngôn ngữ: eng
• Ký hiệu phân loại: 553.421 Silver
• Thông tin xuất bản: Germany : European journal of applied physiology , 2025
• Bộ sưu tập: NCBI
• ID: 59240

Tóm tắt

PURPOSE: Training zones are generally assessed by gas-exchange thresholds (GET). Several mathematical analyses of heart rate variability (HRV) are proposed for indirect GET determination. Our study aimed to investigate the accordance of the detrend fluctuation analysis (DFA α1) for determining GET with first (VT1) and second ventilatory (VT2) thresholds in well-trained subjects. METHODS: Eighteen female and 38 male sub-elite cyclists performed a maximal incremental cycling test of 2-min stage duration with continuous gas exchange and HR measurements. Power output (PO), Oxygen uptake ( RESULTS: Large limits of agreement between VT1 and HRVT1 were observed for measures of CONCLUSION: There was unsatisfactory agreement between the GET and DFA α1 methods for VT1 and VT2 determination in both sex well-trained cyclists. Trial registration number 2233534 on 2024/03/05 retrospectively registered.