Superficial Cooling Does Not Decrease Core Body Temperature Before, During, or After Exercise in an American Football Uniform

• Autores: Rebecca M. Lopez, Lindsey E. Eberman, Michelle A. Cleary
• Localización: Journal of strength and conditioning research: the research journal of the NSCA, ISSN 1064-8011, Vol. 26, Nº. 12, 2012, págs. 3432-3440
• Idioma: inglés
• Texto completo no disponible (Saber más ...)
• Resumen

  • The purpose of this study was to identify the effects of superficial cooling on thermoregulatory responses while exercising in a hot humid environment while wearing an American football uniform. Nine male and female subjects wore a superficial cooling garment while in a cooling (CS) experimental condition or a no cooling (NCS) control condition during an exercise task consisting of warm-up (WU), exercise (EX), and recovery (R). The exercise task simulated an American football conditioning session with subjects wearing a full American football uniform and performing anaerobic and aerobic exercises in a hot humid environment. Subjects were allowed to drink water ad libitum during rest breaks. During the WU, EX, and R periods, core body temperature (Tc) was measured to assess the effect of the cooling garment. Neither baseline resting before warm-up Tc nor after warm-up Tc was significantly different between trials. No significant differences in exercise Tc between conditions were found. Time to return to baseline Tc revealed no significant differences between the experimental and control conditions. The authors found that the volume of fluid consumed was 34% less in the experimental condition (711.1 ± 188.0 ml) compared with the control condition (1,077.8 ± 204.8 ml). The findings indicate that the cooling garment was not effective in blunting the rise in Tc during warm-up, attenuating a rise in Tc during intermittent exercise, or in increasing a return to baseline Tc during a resting recovery period in a hot humid environment while wearing an American football uniform.