ArticleFrontiers in physiology2025
Study of different acute SIT protocols' impact on 200m sprinters' anaerobic performance.
Article in Frontiers in physiology, 2025. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 1 paper.
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1 citing paper in PubMed.
- Effects of inspiratory muscle Pre-activation on 100 m sprint performance in physically active university students.Frontiers in sports and active living · 2026Article
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5 authors.
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Abstract
Introduction: Sprint interval training (SIT), characterized by its "all-out" maximal-intensity efforts, elicits substantial energy output in a short duration, demonstrating superior anaerobic performance. This study compared the acute effects of different SIT protocols to identify the optimal training combination for enhancing anaerobic capacity in 200-m sprinters. Methods: Twelve male 200-m sprinters performed SIT sessions in a 2 (sprint duration: 20s, 30s) × 3 (load: 7.5%, 9%, 10% body mass (BM)) × 4 (repetitions) design with 4-min inter-set rest, assessed via anaerobic power, electromyography (EMG), and blood lactate measures. Results: (1) Duration and load significantly affected peak power (PP), mean power (MP), and fatigue index (FI) (P < 0.05); (2) Sprint duration significantly influenced lower-limb integrated EMG (IEMG) and median frequency (MPF) (P < 0.05), with no notable interaction effects; (3) Both duration and load significantly modulated muscle activation (RMS%) in the rectus femoris, biceps femoris, and vastus lateralis (P < 0.05), but not in the gastrocnemius; (4) Duration significantly increased maximal blood lactate, accumulated lactate, and rating of perceived exertion (RPE) (P < 0.05), whereas load had no independent effect; (5) The interaction between duration and load exhibited highly significant effects on anaerobic performance (P < 0.01). Conclusion: A high-intensity SIT protocol comprising 4 × 20s all-out sprints at 10%BM load with 4-min rest intervals optimally enhances 200-m sprinters' anaerobic capacity through multidimensional physiological stimuli, providing an effective training strategy for performance optimization.
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