Investigation of the effects of the pre-cooling on the physiological responses to soccer-specific intermittent exercise |
| |
Authors: | B Drust N T Cable T Reilly |
| |
Institution: | (1) Centre for Sports Performance, School of Social Sciences, University of Teesside, Borough Road, Middlesbrough TS1 3BA, UK e-mail: b.drust@tees.ac.uk Tel.: +44-1642-342327, Fax: +44-1642-342399, GB;(2) Research Institute for Sport and Exercise Sciences, Liverpool John Moores University, Henry Cotton Campus, Trueman Building, Webster Street, Liverpool L3 2ET, UK, GB |
| |
Abstract: | Whole-body cooling prior to activity has the potential to reduce thermal strain and fatigue during subsequent endurance exercise.
Intermittent activity is associated with greater increases in rectal temperature compared with continuous exercise. Thus,
the effect of pre-cooling on thermoregulatory responses was examined during an intermittent test under “normal” environmental
conditions. Six male university soccer players mean (SD) age 27 (2) years; height 1.77 (0.3) m; mass 72.2 (1.5) kg; maximal
oxygen consumption 58.9 (3.5) ml · kg−1 · min−1] completed a 90-minute soccer-specific intermittent exercise protocol on a non-motorised treadmill. The run was completed
with and without pre-cooling under normal laboratory conditions (20°C) and without pre-cooling in a heated laboratory (26°C).
The pre-cooling strategy involved exposure to a cold shower (26°C) for 60 min. The pre-cooling manipulation lowered rectal
temperature prior to exercise −0.6 (0.6)°C, range −1.5°C; P < 0.05]. The rectal temperature response to exercise was significantly lower following pre-cooling than in the heated condition
pre-cooled 38.1 (0.6)°C, heated 38.6 (0.3)°C]. The increase in rectal temperature during the second half of the protocol
following pre-cooling was significantly greater than the increase observed under normal or heated conditions (P < 0.05). No significant differences were observed between the three conditions for oxygen consumption, heart rate, minute
ventilation, rating of perceived exertion and plasma lactate, glucose or free fatty acid concentrations. Based on the current
investigation, it can be concluded that there is no evidence for the beneficial effects of pre-cooling on the physiological
responses to soccer-specific intermittent exercise under normal environmental conditions.
Accepted: 30 June 1999 |
| |
Keywords: | Pre-cooling Temperature Intermittent exercise Physiological responses |
本文献已被 SpringerLink 等数据库收录! |
|