fernando alonso has expressed natural disappointment he is to sit out the season opening formula one grand prix in australia, but is fully appreciative of the circumstances on advice from doctors alonso will have to wait for his competitive return with mclaren until the second race in malaysia later this month although given a clean bill of health after sustaining concussion in a heavy crash in the second pre season test in barcelona on february 22, the fear of 'second impact syndrome' has forced alonso's hand fernando alonso was involved in a high speed crash during testing at the circuit de barcelona catalunya  alonso's mclaren is recovered back to the pits on the back of a truck after crashing in barcelona  mclaren driver alonso was taken by helicopter to hospital following the accident in catalonia  alonso tweeted his disappointment at not being able to make the season opening f1 grand prix in australia  the term refers to a second concussion occurring when the effects of the first are still subsiding, potentially resulting in severe brain injuries, or even death although the timespan between the accident and alonso returning to the car for first practice in melbourne on march 13 would appear to be sufficient, he is not prepared to take any risks via his twitter account, alonso said: 'it will be tough not to be in australia, but i understand the recommendations a second impact in less than 21 days 'no' £countdownmalaysia' for the albert park event alonso's seat will now be occupied by kevin magnussen, demoted to reserve driver following the spaniard's arrival after a full season with the team in 2014 a thrilled magnussen, who will partner jenson button in melbourne, tweeted: 'shame about the circumstances but still i'm so excited to be racing in melbourne can't wait!!' the 22 year old danish racer kevin magnussen will replace alonso for mclaren at the australian grand prix  to which a sporting alonso replied: 'best of luck at the race mate! £believeinmclarenhonda' explaining the circumstances behind the decision taken to withdraw alonso from australia, mclaren have revealed doctors found the 33 year old to be 'asymptomatic', with 'no evidence whatsoever of any injury' and 'entirely healthy from neurological and cardiac perspectives' but given the prospect of second impact syndrome alonso was 'advised he should not compete in the imminent australian grand prix meeting' a mclaren statement added: 'fernando has understood and accepted that advice fernando's doctors acknowledge he feels fit and well, and he regards himself as ready to race medical staff arrived on the scene to give alonso treatment at the side of the road after the accident  a helicopter was sent to pick up alonso and taken him to hospital from barcelona's circuit de catalunya  alonso was taken to hospital by helicopter after being involved in a crash at speeds of up to 150mph  'that being the case they are comfortable with the fact he has already recommenced physical training, with a view to preparing for a return to the cockpit of his mclaren honda car for the malaysian grand prix meeting on march 27, 28 and 29 'indeed, his doctors are supportive of that ambition, satisfied as they are that he sustained no damage whatsoever during his testing accident on february 22 'all at mclaren honda fully support fernando's decision in respect of his doctors' advice' double world champion alonso has returned to mclaren for this season after spending the past five years with ferrari, burying the hatchet with group ceo ron dennis following an ignominious campaign with the team in 2007
fernando alonso circuit de barcelona catalunya alonso the australian grand prix march 15 danish kevin magnussen mclaren oviedo
fernando alonso was involved in a crash at the circuit de barcelona catalunya  alonso will miss the australian grand prix on march 15 after medical advice  danish driver kevin magnussen will take alonso's place for mclaren  the details of alonso's injuries have not been fully disclosed  alonso is currently recovering in oviedo, where he was born 