Warm-up exercises may not be so important for enhancing submaximal running performance
The purpose of this study was to determine an appropriate warm-up intensity for enhancing performance in submaximal running at 90%vVO2max (it assumes 3000 m to 5000 m in track events). Seven trained male university athletes took part in this study (age: 21.3 ± 2.1 years, height: 169.3 ± 4.7 cm, weight: 58.4 ± 5.6 kg, VO2max: 73.33 ± 5.46 ml/kg/min). Each subject ran on a treadmill at 90%vVO2max until exhaustion after one of four warm-up treatments. The four warm-up treatments were no warm-up, 15 min running at 60%vVO2max, at 70%vVO2max and at 80%vVO2max. The running performance was evaluated by time to exhaustion. VO2, and vastus lateralis muscle temperature were also measured. There were no significant differences in time to exhaustion among the warm-up exercises (p > 0.05). VO2 in no warm-up showed slower reaction than the other warm-up exercises. Regarding, the vastus lateralis muscle temperature immediately after warm-up, no warm-up was significantly (P < 0.01) lower compared with the other warm-up exercises. Our results suggested that submaximal running performance was not affected by presence or absence of a warm-up or by warm-up intensity, although physiological changes occurred.