Abstract
This study investigates the energy metabolism characteristics of sprinters during speed endurance training with different rest intervals (1-min vs. 2-min). Twelve male sprinters (mean age: 19.85 ± 1.93 years, height: 182.75 ± 5.21 cm, weight: 66.08 ± 2.60 kg, training duration: 5.50 ± 1.12 years, personal best 200 m time: 22.88 ± 0.53 s) participated in the study. They underwent speed endurance training with 1-min and 2-min rest intervals. Blood lactate levels, oxygen consumption, and energy metabolism characteristics were recorded. Energy metabolism was assessed using a rapid calculation method based on “V”O 2 , blood lactate (BLA), and excess post-exercise oxygen consumption (EPOC). Phosphagen energy supply during speed endurance training with 1-min rest intervals was 109.03 ± 12.34 kJ, while with 2-min rest intervals it was 82.33 ± 18.04 kJ. Glycolytic energy supply for the two modes was 189.79 ± 43.48 kJ and 167.45 ± 47.14 kJ, respectively. Aerobic metabolism energy supply was measured at 162.02 ± 10.71 kJ and 162.82 ± 13.33 kJ for the 1-min and 2-min rest intervals, respectively. Shorter rest intervals induce quicker physiological responses during interval training at a fixed intensity. Specifically, the 1-min rest interval is more effective in enhancing the phosphagen system. Male sprinters are advised to incorporate 1-min rest interval speed endurance training into their routines to improve cardiovascular function and anaerobic metabolism capacity, thereby enhancing overall speed endurance levels.
Description
This study examines energy metabolism in sprinters during speed endurance training with varying rest intervals.