Cooling During Exercise: An Overlooked Strategy for Enhancing Endurance Performance in the Heat.
It is well established that endurance performance is negatively affected by environmental heat stress due to a complex interaction of physical, physiological and psychological alterations. Numerous scientific investigations have attempted to improve performance in the heat with pre-cooling (cooling prior to an exercise test), and as such this has become a well-established ergogenic practice for endurance athletes. However, the use of mid-cooling (cooling during an exercise test) has received considerably less research attention in comparison, despite recent evidence to suggest that the advantage gained from mid-cooling may outweigh that of pre-cooling. A range of mid-cooling strategies are beneficial for endurance performance in the heat, including the ingestion of cold fluids and ice slurry, both with and without menthol, as well as cooling of the neck and face region via a cooling collar or water poured on the head and face. The combination of pre-cooling and mid-cooling has also been effective, but few comparisons exist between the timing and type of such interventions. Therefore, athletes should experiment with a range of suitable mid-cooling strategies for their event during mock competition scenarios, with the aim to determine their individual tolerable limits and performance benefits. Based on current evidence, the effect of mid-cooling on core temperature appears largely irrelevant to any subsequent performance improvements, while cardiovascular, skin temperature, central nervous system function and psychophysiological factors are likely involved. Research is lacking on elite athletes, and as such it is currently unclear how this population may benefit from mid-cooling.
School of Health and Human Sciences, Southern Cross University, Hogbin Dr, Coffs Harbour, NSW, 2450, Australia. Christopher.Stevens@scu.edu.au.
Christopher J
CJ
Stevens
ASPETAR, Qatar Orthopaedic and Sports Medicine Hospital, Athlete Health and Performance Research Centre, Doha, Qatar.
Lee
L
Taylor
Department of Rehabilitation, Nutrition and Sport, La Trobe University, Bundoora, Australia.
Ben J
BJ
Dascombe
D054874:Athletic Performance / Q000502:physiology; D001833:Body Temperature Regulation / Q000502:physiology*; D003080:Cold Temperature; D015444:Exercise; D017079:Exercise Tolerance / Q000502:physiology*; D018882:Heat Stress Disorders / Q000517:prevention & control*; D006358:Hot Temperature / Q000009:adverse effects*; D006801:Humans; D007036:Hypothermia, Induced / Q000379:methods*
Scand J Med Sci Sports. 2010 Oct;20 Suppl 3:53-9
21029191
Med Sci Sports Exerc. 2010 Jan;42(1):135-41
20010120
J Appl Physiol (1985). 1995 Dec;79(6):1971-6
8847262
Int J Sports Med. 2012 Mar;33(3):211-7
22161295
Physiol Res. 2008;57(6):863-72
18052690
J Appl Physiol (1985). 1999 Mar;86(3):1032-9
10066720
Exerc Sport Sci Rev. 2004 Jul;32(3):100-6
15243205
Exp Physiol. 2005 Nov;90(6):909-17
16157657
PLoS One. 2014 Aug 01;9(8):e103718
25084009
Eur J Appl Physiol Occup Physiol. 1989;58(8):816-20
2527748
Exp Physiol. 2006 Sep;91(5):925-33
16777932
J Occup Environ Hyg. 2011 Aug;8(8):484-91
21756138
Eur J Appl Physiol. 2010 Nov;110(5):1063-74
20694731
J Sports Med Phys Fitness. 2014 Oct;54(5):595-604
24844622
Eur J Appl Physiol. 2004 May;91(5-6):729-36
15015001
J Sports Sci. 2013;31(12):1271-9
23506436
Physiol Behav. 2011 May 3;103(2):217-24
21315099
Int J Sports Physiol Perform. 2015 Oct;10(7):835-9
25611016
J Sci Med Sport. 2000 Jun;3(2):186-93
11104310
Br J Sports Med. 2015 Mar;49(6):377-84
24747298
Scand J Med Sci Sports. 2015 Jun;25 Suppl 1:211-8
25943672
Eur J Appl Physiol. 2010 May;109(1):59-65
19727797
Br J Sports Med. 2015 Sep;49(18):1164-73
26069301
J Strength Cond Res. 2015 Jul;29(7):1925-36
26102259
J Physiol. 2005 May 15;565(Pt 1):335-45
15760945
Eur J Appl Physiol. 2011 Oct;111(10):2517-24
21360201
Can J Appl Physiol. 2005 Feb;30(1):87-104
15855685
J Appl Physiol (1985). 1998 May;84(5):1731-9
9572824
Med Sci Sports. 1974 Summer;6(2):108-13
4461967
Int J Sports Physiol Perform. 2011 Jun;6(2):208-20
21725106
Eur J Appl Physiol. 2013 Jul;113(7):1705-17
23385657
PLoS One. 2015 Apr 09;10(4):e0123815
25856401
Med Sci Sports Exerc. 2010 Mar;42(3):577-84
19952819
Am J Physiol Regul Integr Comp Physiol. 2006 Nov;291(5):R1443-8
16763078
J Strength Cond Res. 2005 Feb;19(1):122-8
15707380
J Strength Cond Res. 2014 Dec;28(12):3416-24
24910953
Ergonomics. 2016 Aug;59(8):1019-25
26472519
Exp Physiol. 2012 Mar;97(3):327-32
22143882
Med Sport Sci. 2008;53:74-88
19209000
Scand J Med Sci Sports. 2015 Jun;25 Suppl 1:200-10
25943671
Med Sci Sports Exerc. 2016 Jan;48(1):114-22
26258857
Med Sci Sports Exerc. 2008 Sep;40(9):1637-44
18685527
Scand J Med Sci Sports. 2015 Jun;25 Suppl 1:4-5
25943652
Temperature (Austin). 2016 Apr 19;3(2):187-190
27857947
J Sports Sci. 2017 Apr;35(8):798-805
27267974
Med Sci Sports Exerc. 2011 Dec;43(12):2388-95
21606877
Pflugers Arch. 2004 Jul;448(4):422-30
15138825
Int J Sports Physiol Perform. 2015 Jul;10(5):655-63
25620399
Scand J Med Sci Sports. 2017 Jan;27(1):55-65
26677824
Compr Physiol. 2014 Apr;4(2):657-89
24715563
J Appl Physiol (1985). 1988 Feb;64(2):803-11
3372438
J Appl Physiol (1985). 2004 May;96(5):1867-74
14698992
J Appl Physiol (1985). 2001 Sep;91(3):1055-60
11509498
J Strength Cond Res. 2017 Mar;31(3):620-629
27379961
Scand J Med Sci Sports. 2017 Mar;27(3):309-317
26888740
Exp Physiol. 2007 Jan;92(1):187-95
16973692
J Athl Train. 2014 Sep-Oct;49(5):632-9
25144598
J Sci Med Sport. 2015 May;18(3):333-7
24930073
Temperature (Austin). 2016 May 4;3(2):191-194
27857948
Int J Sports Med. 2013 Aug;34(8):732-5
23444094
Int J Sports Physiol Perform. 2017 Jan;12 (1):99-105
27140841
Sports Med. 2006;36(8):671-82
16869709
Eur J Appl Physiol. 2003 Jun;89(5):451-9
12684806
Med Sci Sports. 1978 Fall;10(3):194-9
723510
J Athl Train. 2011 Jan-Feb;46(1):61-8
21214352
Scand J Med Sci Sports. 2016 Oct;26(10 ):1209-16
26408395
Br J Sports Med. 2012 Oct;46(13):936-42
22144003
Br J Sports Med. 2015 Jan;49(1):7-13
23945034
Int J Sports Med. 2014 Sep;35(10):840-6
24771132