Effects of active,passive or no warm-up on metabolism and performance during high-intensity exercise |
| |
| Authors: | Susan Gray Myra Nimmo |
| |
| Institution: | 1. Research Institute for Sport and Exercise Sciences , Liverpool John Moores University , Henry Cotton Campus, 15-21 Webster Street, Liverpool, L3 2ET, UK t.p.reilly@livjm.ac.uk;3. Research Institute for Sport and Exercise Sciences , Liverpool John Moores University , Henry Cotton Campus, 15-21 Webster Street, Liverpool, L3 2ET, UK |
| |
| Abstract: | The aim of this study was to determine the influence of type of warm-up on metabolism and performance during high-intensity exercise. Eight males performed 30 s of intense exercise at 120% of their maximal power output followed, 1 min later, by a performance cycle to exhaustion, again at 120% of maximal power output. Exercise was preceded by active, passive or no warm-up (control). Muscle temperature, immediately before exercise, was significantly elevated after active and passive warm-ups compared to the control condition (36.9 - 0.18°C, 36.8 - 0.18°C and 33.6 - 0.25°C respectively; mean - sx ) ( P ? 0.05). Total oxygen consumption during the 30 s exercise bout was significantly greater in the active and passive warm-up trials than in the control trial (1017 - 22, 943 - 53 and 838 - 45 ml O 2 respectively). Active warm-up resulted in a blunted blood lactate response during high-intensity exercise compared to the passive and control trials (change = 5.53 - 0.52, 8.09 - 0.57 and 7.90 - 0.38 mmol· l -1 respectively) ( P ? 0.05). There was no difference in exercise time to exhaustion between the active, passive and control trials (43.9 - 4.1, 48.3 - 2.7 and 46.9 - 6.2 s respectively) ( P = 0.69). These results indicate that, although the mechanism by which muscle temperature is elevated influences certain metabolic responses during subsequent high-intensity exercise, cycling performance is not significantly affected. |
| |
| Keywords: | Blood Lactate Cycling Muscle Temperature |
|
|
