Adapting to Extreme Conditions

Wales and Japan are set to face off in a highly anticipated rugby match in Kitakyushu, Japan, where extreme heat and humidity are expected to play a significant role. To ensure player safety and performance, World Rugby’s updated heat and air quality guidelines will be implemented. This includes a three-minute water break midway through each half and an extended half-time period of 20 minutes.

Heat Stress Index in Action

The guidelines, developed by Dr. Grant Lynch and Dr. Olly Jay from the University of Sydney, focus on a heat stress index rather than just air temperature. This index, which ranges from 0 to 250, takes into account factors such as air temperature, humidity, wind speed, and ground radiation. Based on the readings, specific actions are recommended:

• Low (0-99): Standard practice
• Moderate (100-149): Increased fluid intake and reduced clothing
• High (150-199): Three-minute cooling breaks and cooling strategies like iced towels
• Very High (200-249): Extended half-time to 20 minutes
• Extreme (250+): Consider delaying or suspending the game

Preparations for the Match

Both teams have been preparing extensively for the challenging conditions. Wales has utilized ice towels and freezing flannel hats to combat the heat. During their training sessions, players spent time in ice baths and used 500 kilos of ice. Additionally, Wales prepared in a heat chamber at their training base to simulate the extreme conditions they would face in Japan.

Japan’s Strategy

Japan’s coach, Eddie Jones, believes that the team that best adapts to the conditions will come out on top. He has expressed his hope for a hot day, aiming to use the weather to their advantage and tire out the Welsh players.

Match Details

The match is scheduled for Saturday, 5 July, at the Mikuni World Stadium in Kitakyushu, with kick-off at 06:00 BST. Fans can watch the game live on BBC One Wales and BBC iPlayer, listen on BBC Radio Wales, BBC Radio Cymru, and BBC Sounds, and follow text commentary and highlights on the BBC Sport website and app.

Conclusion

As both teams gear up for this intense match, the focus remains on player safety and performance in the face of extreme weather conditions. The implementation of World Rugby’s guidelines ensures that the game will be played under the safest possible conditions, allowing for an exciting and competitive match.