{"status":"ok","message-type":"work","message-version":"1.0.0","message":{"indexed":{"date-parts":[[2026,11,4]],"date-time":"2026-11-04T18:30:30Z","timestamp":1793817030264,"version":"4.6.1"},"reference-count":14,"publisher":"BMJ","issue":"6","content-domain":{"domain":[],"crossmark-restriction":false},"short-container-title":["Br J Sports Med"],"published-print":{"date-parts":[[2007,6]]},"abstract":"Objective:<\/jats:bold>To examine the effects of different thermoregulatory preparation procedures (warm-up (WU), precooling (PC), control (C)) on endurance performance in the heat.<\/jats:p>Methods:<\/jats:bold>20 male subjects completed three treadmill runs to exhaustion (5 days apart). In each session, all subjects performed an incremental running test after WU (20 min at 70% maximum heart rate (HR)), after PC (wearing a cooling vest (0\u00b0C\u20135\u00b0C) for 20 min at rest) or without particular preparation (C). 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 until the point of volitional fatigue. Running performance, HR, blood lactate concentration, tympanic temperature and skin temperature were measured in each trial.<\/jats:p>Results:<\/jats:bold>In the PC condition, the running performance (32.5 (5.1) min; mean (SD)) was significantly (p<0.05) higher than in WU (26.9 (4.6) min) and in C conditions (30.3 (4.3) min). During the first 30 min of testing, HR, tympanic temperature and skin temperature were significantly (p<0.05) lower after PC than after WU. There were no significant differences in lactate concentration; however, there was a trend to lower values after WU.<\/jats:p>Conclusions:<\/jats:bold>The use of an ice-cooling vest for 20 min before exercising improved running performance, whereas the 20 min WU procedure had a distinctly detrimental effect. Cooling procedures including additional parts of the body such as the head and the neck might further enhance the effectiveness of PC measures.<\/jats:p>","DOI":"10.1136\/bjsm.2006.032292","type":"journal-article","created":{"date-parts":[[2007,1,16]],"date-time":"2007-01-16T15:31:52Z","timestamp":1168961512000},"page":"380-384","source":"Crossref","is-referenced-by-count":57,"title":["Effects of warm-up and precooling on endurance performance in the heat"],"prefix":"10.1136","volume":"41","author":[{"given":"Sandra","family":"\u00dcckert","sequence":"first","affiliation":[],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Winfried","family":"Joch","sequence":"additional","affiliation":[],"role":[{"vocabulary":"crossref","role":"author"}]}],"member":"239","published-online":{"date-parts":[[2007,1,15]]},"reference":[{"key":"2024051312584781000_41.6.380.1","unstructured":"Nadel ER. Problems with temperature tegulation during exercise. 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