Michael Schumacher skis in the northern Italian resort of Madonna di Campiglio in 2005. Schumacher, the retired seven-time F1 champion, was in a coma and listed in critical condition after striking his head in a ski accident in the French Alps on Sunday.?[Photo/Agence France-Press]

Speed and danger the hallmarks of German superstar's lifestyle - on and off the track

Formula One legend Michael Schumacher may have retired in 2012 after a glittering career, but his love for speed and danger has now led to a serious head injury while skiing in France.

The 44-year-old German suffered a blow to the head after hitting a rock at the upmarket Alps resort of Meribel, and although initial reports suggested his injuries were not life-threatening, he was later listed as being in critical condition by the hospital treating him in Grenoble.

Meribel resort director Christophe Gernigon-Lecomte said Schumacher was skiing late Sunday morning with companions when he fell and struck his head.

After years of racing in the high risk world of Formula One and winning a record seven world titles, his accident suggests that perhaps retirement has not dulled his relish of dangerous pursuits.

As an F1 racer, Schumacher was known for his daring overtaking manoeuvres, his at-times almost reckless abandon in the pursuit of victory and his mastery of the tricky conditions presented by rain.

When he won his first world title in 1994 with Benetton, he did so in controversial fashion, crashing into title rival Damon Hill in the final race after he had already dashed his own hopes by careening off the track while pushing hard - despite leading comfortably.

It was indicative of Schumacher's win-at-all-costs attitude and his willingness to take huge risks.

He almost provoked a similar crash in the final race of the 1997 season when battling Canada's Jacques Villeneuve for the title, an incident for which he was retrospectively disqualified from the whole season.

His career was also punctuated by accusations of dangerous driving following incidents such as a near collision with former teammate Rubens Barrichello in 2010, which the Brazilian later described as "the most dangerous thing" he had been through.

But even such mishaps didn't slow Schumacher down or quench his thirst for success as he went on to win five successive titles with Ferrari from 2000-04.

He retired at the end of the 2006 season before attempting an unsuccessful comeback in 2010 with Mercedes.

In the interim he survived a horrific motorcycle accident that left him unconscious in Spain. That time he was released from hospital after just five hours.

Schumacher is F1's most decorated champion with 91 GP wins, while being one of only two men to reach 300 races.

In 2000 he also sealed Ferrari's first championship in 21 years by winning the penultimate race of the season in Japan.

Schumacher's duels with Hill, Villeneuve and Mika Hakkinen, fired by an unquenchable competitive spirit, have gone down in folklore.

He was born on Jan 3, 1969 near Cologne, Germany, the son of a bricklayer who also ran the local go-kart track, where his mother worked in the canteen. His younger brother Ralf also became a successful Formula One driver.

By 1987, Schumacher was the German and European go-kart champion and left school to work as an apprentice mechanic, although he was soon racing professionally.

In 1990, after winning the German F3 championship, he was hired by Mercedes to drive sports cars. Just a year later he burst onto the Formula One scene, qualifying seventh for Jordan in his debut race at Belgium.

The young German was immediately snapped up by Benetton, where he won his first Formula One race in 1992, again at Belgium's tough Spa-Francorchamps circuit.

Schumacher won 18 races over the next four seasons with Benetton, claiming back-to-back world championships in 1994 and 1995.

In 2002 he won 11 times and finished on the podium in all 17 races.

In 2003 Schumacher broke Juan Manuel Fangio's record by claiming his sixth world title and in 2004, his greatest season, he won 13 races.