Article Text

other Versions

PDF
Effects of warm-up and precooling on the endurance performance in the heat
  1. Sandra Ückert (sandra.ueckert{at}uni-dortmund.de)
  1. University of Dortmund; Institute of Sports and Sportsscience, Germany
    1. Winfried Joch (jowi{at}uni-muenster.de)
    1. University of Muenster; Institute of Sports and Sportsscience, Germany

      Abstract

      Objective: To examine the effects of different thermoregulatory preparation procedures (warm-up, precooling, control) on the endurance performance in the heat.

      Methods: Twenty male subjects completed three treadmill runs to exhaustion (5 days apart). In each session, all subjects performed an incremental running test either after warm-up (20 min at 70% HRmax), after precooling (wearing an ice cooling vest [0 - 5°C] for 20 min at rest) or without particular preparation (control). After a 5-min break, the exercise protocol commenced at a workload of 9 km/h and was increased by 1 km/h every 5 min till the point of volitional fatigue. Running performance, heart rate, blood lactate concentration, tympanic temperature, and skin temperature were measured in each trial.

      Results: In the precooling condition, the running performance (32.5 (5.1) min) was significantly (p<.05) higher than in warm-up (26.9 (4.6) min) and in control conditions (30.3 (4.3) min). During the first 30 min of testing, heart rate, tympanic temperature, and skin temperature were significantly (p<.05) lower after precooling than after warm-up. There were no significant differences in lactate concentration, however, there was a trend to lower values after warm-up.

      Conclusions: The use of an ice cooling vest for 20 min prior to exercising improved running performance, whereas the 20-min-warm-up procedure had a distinctly detrimental effect. Cooling procedures including additional parts of the body like the head and the neck might further enhance the effectiveness of precooling measures.

      • Precooling
      • Warm-up
      • core temperature
      • running performance

      Statistics from Altmetric.com

      Request permissions

      If you wish to reuse any or all of this article please use the link below which will take you to the Copyright Clearance Center’s RightsLink service. You will be able to get a quick price and instant permission to reuse the content in many different ways.