Table 2.

Examples of recommended actions by various sporting governing bodies based on the WBGT

WBGT (°C)	Organization	Athlete concerned	Recommendation
32.3	ACSM	Acclimatised, fit and low-risk individuals	Participation cut-off
32.2	ITF	Junior and wheelchair tennis players	Immediate suspension of play
32.2	WTA	Female tennis players	Immediate suspension of play
32.0	FIFA	Football players	Additional cooling break at 30 and 75 min
30.1	ACSM	Non-acclimatised, unfit and high-risk individuals	Participation cut-off
30.1	ITF-WTA	Junior and female tennis players	10 min break between 2nd and 3rd set
30.1	ITF	Wheelchair tennis players	Suspension of play at the end of the set in progress
28.0	ITF	Wheelchair tennis players	15 min break between 2nd and 3rd set
28.0	Australian Open	Tennis players	10 min break between 2nd and 3rd set
21.0	Marathon in northern latitudes	Runners in mass participation events	Cancel marathon

Data from Armstrong et al,¹⁸³ Roberts¹⁹² and from the following websites:

http://www.fifa.com/aboutfifa/footballdevelopment/medical/playershealth/risks/heat.html, http://www.itftennis.com/media/194281/194281.pdf.

http://www.itftennis.com/media/195690/195690.pdf.

http://www.wtatennis.com/SEWTATour-Archive/Achive/AboutTheTour/rules2015.pdf.

http://www.ausopen.com/en_AU/event_guide/a_z_guide.html.

ACSM, American College of Sports Medicine; ITF, International Tennis Federation; WBGT, wet bulb globe temperature; WTA, Women's Tennis Association.