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Faulkner, SH 
ORCID: https://orcid.org/0000-0003-4688-7252, Broekhuijzen, I, Raccuglia, M, Hupperets, M, Hodder, SG and Havenith, G,
2019.
The threshold ambient temperature for the use of precooling to improve cycling time-trial performance.
International Journal of Sports Physiology and Performance, 14 (3), pp. 323-330.
ISSN 1555-0265
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Abstract
Purpose: Cycling time trial performance can be compromised by moderate to high ambient temperatures. It has become commonplace to implement pre-cooling prior to competition to alleviate this performance decline. However, little is known about the ambient temperature threshold above which pre-cooling becomes an effective strategy for enhancing endurance performance. It was the aim of this study to investigate the effect of pre-cooling in different environmental temperatures on time trial performance.
Methods: Trained cyclists completed two time trials with (COLD) and without (CON) pre-cooling using an ice-vest and sleeves ensemble in ambient temperatures of 24˚C, 27˚C and 35˚C.
Results: Time trial performance faster following COLD in both 35˚C (6.2%) and 27˚C (2.6%; both P<0.05) but not 24˚C (1.2%). Magnitude based inferential statistics indicate that COLD was very likely beneficial to performance in 35˚C and likely beneficial in 27˚C and possibly beneficial in 24°C. Mean power was 2.4%, 2.5% and 5.6% higher following COLD and considered to be likely beneficial in 24°C and very likely beneficial in 27˚C and 35˚C. COLD reduced mean skin temperature throughout the warm-up and into the time trial in all ambient temperatures (P<0.05). Sweat loss was lower following COLD in 24˚C and 27˚C but not 35˚C. There was no effect of COLD on gastrointestinal temperature at any point.
Conclusions: Pre-cooling with an ice-vest and sleeves is likely to have a positive effect on time trial performance at temperatures above 24˚C, with a clear relationship between ambient temperature and the magnitude of effect of pre-cooling
| Item Type: | Journal article |
|---|---|
| Alternative Title: | Threshold temperature for the use of pre-cooling [running head] |
| Publication Title: | International Journal of Sports Physiology and Performance |
| Creators: | Faulkner, S.H., Broekhuijzen, I., Raccuglia, M., Hupperets, M., Hodder, S.G. and Havenith, G. |
| Publisher: | Human Kinetics, Inc |
| Date: | March 2019 |
| Volume: | 14 |
| Number: | 3 |
| ISSN: | 1555-0265 |
| Identifiers: | Number Type 10.1123/ijspp.2018-0310 DOI |
| Divisions: | Schools > School of Science and Technology |
| Record created by: | Linda Sullivan |
| Date Added: | 02 Aug 2018 11:37 |
| Last Modified: | 17 Sep 2019 13:49 |
| URI: | https://irep.ntu.ac.uk/id/eprint/34229 |
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