No evidence of Alonso 'electrocution', says Dennis

Addressing the media on the opening day of the final test at the Catalan circuit, Dennis said: "There was rumours of electrocution and I can tell you when a human is electrocuted there's an enzyme in your body that elevates, it stays there for 48 hours."

"It was completely normal during the whole duration. There was absolutely, categorically, no electrocution."

Dennis said McLaren had video evidence from a fan that supports the team's theory that it was a gust of wind that made Alonso lose control of his car and crash into the Turn 3 wall.

"There was a fan stood on the corner with his son who communicated with us and said it was extremely gusty on that corner," Dennis said.

"In all the previous runs Fernando was saying it was tricky because the wind is moving the car around, so our conclusion that it was based on the wind was based on his comments and the comments and the third party."

The McLaren boss did confirm, however, that Alonso was unconscious for a few seconds as a result of the impact against the wall.

"If you then ask the question why was he for three days in the hospital, it's because there was a period of unconsciousness. It was relatively short," he added.

"The G figures of the accident were significantly less in his helmet than they were in the car. Significantly less than half of the G figures in his accelerometers in his ears."