England will face one of their most challenging matches in the World Cup last 16 against joint hosts Mexico at the iconic Azteca Stadium. The match, scheduled after months of planning and a year of preparation, pits Thomas Tuchel's side against a team that has won all four games at the Azteca in this tournament without conceding a goal.
Altitude and Hypobaric Chambers
To combat the high altitude of Mexico City, England players used hypobaric chambers, oxygen masks, and heat chambers during a training camp in Girona last summer. The state-of-the-art technology, also used by Cristiano Ronaldo, was introduced before end-of-season fixtures against Andorra and Senegal. Some England players even have hypobaric chambers at home.
Remote Training and Monitoring
England stars were monitored using Whoop! devices provided by FA medical and science staff. These devices tracked data on sleep patterns, energy levels, and fitness, with regular consultation with clubs. After the draw in March, research and contact were stepped up to ensure the FA knew each player's fitness status upon reporting.
Training Base and Preparation
England trained in Kansas City, in the middle of the country, and had a pre-tournament base in Florida. The Florida camp was a boot camp focused on adapting to conditions, with Declan Rice noting he sweated less after just over a week in the United States. In Kansas City, the team enjoyed home comforts, good facilities, and anonymity.
Travel and Recovery
After each game, England flew back to Kansas City at a reasonable time, unlike during the Euros when they returned at 3 or 4 am. After the match against DR Congo in Atlanta, players returned to the hotel and many went out on bikes, with even those who played hitting the bikes at open training the next day.
FIFA Regulations and Altitude Effects
FIFA rules require nations to be in the host city at least 24 hours before kick-off for training, media duties, and the match. From the quarter-finals, this changes to 48 hours. Experts say the prime time to arrive in Mexico City is six hours before the game to avoid altitude effects, but this was not possible due to FIFA regulations. Arriving between six and 24 hours is deemed OK, but 48 hours is the maximum before ill effects kick in. England are pushing the boundaries, as many top athletes experience broken sleep on the first night.
Altitude Symptoms and Mexico's Advantage
Top athletes often complain of shortness of breath, illness, and light-headedness at altitude. The unique challenge of this tournament, spread across three countries, contrasts with 1986 when England could train solely in Mexico. Mexico have a huge advantage, having won four games at the Azteca without conceding and suffering only two competitive defeats this century. England players have been warned the altitude may hit them in the first 20 minutes, but the team believes opponents tire in the last 20.
Security and Reception
England face a 'Welcome to Hell' from the moment they arrive in Mexico City. Ecuador, beaten by Mexico in the last round, complained that their hotel was besieged by Mexican fans playing loud music, sounding horns, and revving motorbikes the night before the game. FIFA has promised a cordon around England's hotel, a blue light escort from the airport and to the stadium, and police and security are on red alert. England players have been given ear plugs, white noise devices, and advice on diet, training, and recovery.
Outlook
The FA have taken every possible precaution. England are a better team man for man than Mexico, but with the fans at the Azteca and the sense of dirty tricks over the kick-off change, only after the game will it be known if the preparations worked.
