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Double lactate threshold exercise training: development context, basic connotation, application effect and mechanism of action
Wei Bo, Qiu Jiangang
2026, 30 (4):
964-974.
doi: 10.12307/2026.531
BACKGROUND: The lactate threshold is a crucial physiological indicator for assessing the aerobic metabolic capacity and training level of endurance athletes, representing the intensity point at which lactate production and clearance reach a dynamic equilibrium within the organism. The traditional lactate threshold training, which is a prolonged and stable-intensity training, aims to enhance the aerobic endurance and lactate clearance efficiency of athletes. In recent years, with the advancement of exercise physiology, double lactate threshold training has emerged as an innovative training modality, drawing extensive attention from both the academic circle and practitioners. Nevertheless, current systematic research on double lactate threshold training remains limited, particularly in aspects such as its physiological mechanisms, optimal implementation plans, and long-term effects.
OBJECTIVE: To systematically sort out the development course of double lactate threshold training, deeply analyze its fundamental connotations, objectively assess its application effects, and investigate its physiological action mechanisms, with the expectation of providing scientific basis and guidance for the improvement and optimization of endurance sports training theories and practices.
METHODS: With the search terms of “lactate threshold training, double lactate threshold training, lactate training, threshold training, endurance training, Norwegian training method, Norwegian training mode, Norwegian training experience,” a systematic search was conducted in databases, including PubMed, Web of Science, Embase, Medline, Cochrane Library, CNKI, WanFang, and VIP. After screening, 8articles met the requirements, involving 8 training cases, and 14 top international athletes, and sports events include 800 m, 1 500 m, 5 000 m, 10 000 m, and cross-country running (9.5 km for men and 4.5 km for women).
RESULTS AND CONCLUSION: (1) For the first time, double lactate threshold training was defined as a training strategy aimed at improving aerobic and speed capabilities, involving separate aerobic and anaerobic threshold training sessions within a single training day (aerobic training load intensity requirement of 0.7 -2.0 mmol/L, anaerobic training load intensity requirement of 2.0-4.5 mmol/L), with a training frequency of ≥ 2 times per week and a training volume of 120-160 km per week. (2) Double lactate threshold training has positive effects on muscle adaptability and plasticity (dimension and elasticity), increasing aerobic and anaerobic capabilities, and alleviating central neural fatigue and peripheral fatigue. (3) The main mechanisms by which double lactate threshold training yields effects may include hormone secretion, protein synthesis and inhibitory regulation, muscle fiber recruitment and cell swelling, mitochondrial biosynthesis and improvement in the chain of respiratory function, and neurotransmitter regulation. (4) In the practical application of double lactate threshold training, factors such as individualized training plans, load intensity design and monitoring for threshold training days, and applicable sports events should be fully considered. For the systematic improvement of double lactate threshold training, further exploration is still needed in terms of application subjects, training plans, action mechanisms, effect evaluation, and safe application.
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