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Infographic titled “Speed Endurance vs. Special Endurance” that compares scientific/metabolic differences and practical training notes — Speed Endurance uses alactic and early glycolytic systems to target anaerobic power for 80–150 m efforts with full 5–10 minute recovery and emphasis on technique, while Special Endurance relies more on the anaerobic glycolytic system with increasing aerobic contribution for longer sprints, developing lactic acid tolerance and tolerating shorter 1–3 minute incomplete recovery; includes icons (runner, stopwatch, flame), a pie chart, energy curve and recovery-time bar chart.

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